Operation Manual 1-Samgong

Operation Manual1SELFJECTOR Instruction Manual

Operation Manual 1 Precautions for safety

Configuration and structure

of SELFJECTOR

Motor, starter, automatic control panel

Multi-Monitor

SAMGONG -MITSUBISHI

SELFJECTORGENIUS-SERIES

InstructionManual


IMPORTANCE

The manual is edited for treating mineral oils

such as for purifying fuel oil or lubricating oil.


! WARNING

The instruction manual is a guidebook for using the automatic discharge type oil

purifier, SAMGONG-MITSUBISHI SELFJECTOR GENIUS SERIES (hereinafter

referred to as SELFJECTOR).

SELFJECTOR is a fast rotating centrifugal machine. Before using it, sufficiently be

versed in details of the manual.

Handle it safely and so as to fully exhibit the function of SELFJECTOR.

The composition of instruction manual for SELFJECTOR is as follows.

The present manual is Part 2 "Operation manual1".

Use each manual according to the particular purpose to sufficiently

understand the information.


①: Design Engineer ②: Installer ③: Engine Engineer ④: Operator Intended

ReaderManual Description ① ② ③ ④1 Outline of fitting-out Aboard Information for transportation, handling and storage of the

machine

Instructions for installation and dimensions

System diagram and connection diagram

O O

2 Operation Manual 1 Precautions for safety

Configuration and construction of SELFJECTOR

Motor, starter, automatic control panel

Multi-Monitor

O

3 Operation Manual 2 Precautions for safety

Functions of components

Operation setting items and adjustment procedures

How to start and stop

O

Operation Manual 3 Precautions for safety

Function, operation and maintenance information on

automatic control panel GBC-1 & GSH-1

O

4

5 Maintenance Manual Precautions for safety

Disassembly and reassembly procedures

Maintenance and inspection procedures

Troubleshooting and corrective action

O

NOTE

The Part 4 manuals (Operation Manuals 3) deal with the following types of the automatic control

systems. When you purchase the SELFJECTOR controlled by one of these control systems, the

associated operation manual of Part 4 will be supplied.

Automatic control systems: GBC-1 and GSH-1


1 Precautions in safety ....................................................................................................................... 1-1

1.1 Symbols related to safety ................................................................................................................ 1-1

1.2 Labels for safety .............................................................................................................................. 1-2

1.3 Safety precautions........................................................................................................................... 1-3

1.4 Definition of terms ........................................................................................................................... 1-5

2 Configuration of oil purifying system............................................................................................. 2-1

2.1 Gear pump ...................................................................................................................................... 2-2

2.2 Oil heater......................................................................................................................................... 2-2

2.3 3-way cylinder valve ........................................................................................................................ 2-2

2.4 Multi- Monitor (MM) ......................................................................................................................... 2-2

2.4.1 Leakage Monitor Function (LM).................................................................................................... 2-2

2.4.2 Discharge Detector Function (DD)................................................................................................ 2-2

2.4.3 Water Detector Function (WD) ..................................................................................................... 2-3

2.5 Starter.............................................................................................................................................. 2-3

2.6 Control panel ................................................................................................................................... 2-3

2.7 Alarm panel ..................................................................................................................................... 2-3

2.8 Kinds (specifications) of oil purifying system ................................................................................... 2-3

2.9 Component devices of different versions......................................................................................... 2-4

2.10 Feature of Automatic types............................................................................................................ 2-4

3 STRUCTURE of SELFJRCTOR ........................................................................................................ 3-1

3.1 General............................................................................................................................................ 3-1

3.2 Drive unit ......................................................................................................................................... 3-1

3.2.1 Vertical shaft section .................................................................................................................... 3-1

3.2.2 Horizontal shaft section ................................................................................................................ 3-2

3.2.3 Brake ............................................................................................................................................ 3-2

3.2.4 Friction clutch ............................................................................................................................... 3-2

3.3 Bowl................................................................................................................................................. 3-3

3.3.1 Structure of bowl .......................................................................................................................... 3-3

3.3.2 Discharge mechanism .................................................................................................................. 3-4

3.4 Water supplying device ................................................................................................................... 3-6

3.5 Centripetal pump ............................................................................................................................. 3-7

3.6 Purifier operation and clarifier operation.......................................................................................... 3-8

3.6.1 Purifier operation .......................................................................................................................... 3-8

3.6.2 Clarifier operation ......................................................................................................................... 3-9

3.7 Parallel operation and series operation ......................................................................................... 3-10

3.7.1 Parallel operation........................................................................................................................ 3-11

3.7.2 Series operation ......................................................................................................................... 3-12

Contents (1 / 3)


4 Motor, starter and control panel ..................................................................................................... 4-1

4.1 Motor ............................................................................................................................................... 4-1

4.1.1 Precautions in handling ................................................................................................................ 4-1

4.1.2 Motor characteristics .................................................................................................................... 4-1

4.1.3 Motor structure ............................................................................................................................. 4-3

4.1.4 Rated current intensity.................................................................................................................. 4-3

4.2 Starter.............................................................................................................................................. 4-4


4.2.2 Starter structure............................................................................................................................ 4-4

4.2.3 Overload relay (thermal relay) ...................................................................................................... 4-4

4.2.4 Connection of Starter.................................................................................................................... 4-5

4.3 Control panel ................................................................................................................................... 4-6


4.3.2 Detail explanation of Control panel (model GBC-1 and GSH-1) ................................................... 4-7

Contents (2 / 3)

5 Multi-Monitor..................................................................................................................................... 5-1

5.1 Multi-Monitor.................................................................................................................................... 5-1

5.1.1 General......................................................................................................................................... 5-1

5.1.2 Kind of Multi-Monitor..................................................................................................................... 5-2

5.1.3 Explanation of internal switches on Multi-Monitor......................................................................... 5 -3

5.1.4 Identification and Location of Multi-Monitor Sensors .................................................................... 5-5

5.1.5 Routine running ............................................................................................................................ 5-5


5.2 Leakage Monitor Function (LM)....................................................................................................... 5-6

5.2.1 General......................................................................................................................................... 5-6

5.2.2 Operating principle ....................................................................................................................... 5-6

5.2.3 Connecting with control panel ...................................................................................................... 5-7

5.2.4 LED display .................................................................................................................................. 5-8

5.2.5 Routine running ............................................................................................................................ 5-9

5.2.6 Items to adjust .............................................................................................................................. 5-9

5.2.7 Factory settings (main value) ..................................................................................................... 5-10

5.3 Discharge Detector Function (DD)................................................................................................. 5-11

5.3.1 General....................................................................................................................................... 5-11

5.3.2 Operating principle (Alarm function) ........................................................................................... 5-11

5.3.3 Connecting with control panel .................................................................................................... 5-11

5.3.4 LED displays .............................................................................................................................. 5-12

5.3.5 Routine running .......................................................................................................................... 5-13

5.3.6 Items to adjust ............................................................................................................................ 5-13

5.3.7 Precautions in handling .............................................................................................................. 5-13

5.4 Water Detector Function (WD) ...................................................................................................... 5-14

5.4.1 General....................................................................................................................................... 5-14

5.4.2 Pressure sensor type water detector (GSH-1/MM-3).................................................................. 5-14

5.5 Partial discharge detection function (GSH-1) .................................................................................5-18

5.5.1 Operating principle ...................................................................................................................... 5-18

5.5.2 Items to adjust.............................................................................................................................. 5-19

5.6 Display Function............................................................................................................................. 5-20

5.6.1 General......................................................................................................................................... 5-20

5.6.2 Configuration of display................................................................................................................ 5-20

5.6.3 Factory settings............................................................................................................................ 5-22

Contents (3 / 3)

SELFJECTOR Instruction Manual Operation Manual1

SELFJECTOR Instruction Manual Operation Manual11-1

1 Precautions in safety

For correct use, carefully read the "Precautions in safety" beforehand.

Precautions in safety given in the instruction manual are intended for safely and correctly using the

product and avoiding danger or damage to user. Carefully read the precautions and do not operate,

maintain or handle SELFJECTOR before you are fully versed in them.

1.1 Symbols related to safety

In the manual, precautions are headed by the following marks. Be sure to observe them because they

are important for ensuring the safety.

! WARNING: indicates a potentially hazardous situation which, if not heeded, could result

in death or serious injury.

! CAUTION: indicates a hazardous situation which, if not heeded, may result in minor or

moderate injury or damage to the purifier or facilities.

NOTE: indicate precautionary instructions that given contain what must be done

without fail and what should be kept in mind as a guide in operating

SELFJECTOR and doing related work.


1.2 Labels for safety

There are 3 different labels for safety.

The one shown in Pic. 1 is put in the spare part box. After fitting-out aboard, the person in charge of

installation is requested to attach it on an easily visible place near SELFJECTOR.

Pic. 2, Pic. 3 are factory attached direct on SELFJECTOR. Do not smear them by painting but keep

them visible at all times.

Safety labels are available any time. Request them as required.

Pic. 1

Pic. 2 Pic. 3

안전의주의사항경고


1.3 Safety precautions

! WARNING

The bowl of SELFJECTOR produces a large centrifugal force when it rotates. Wrong handling is very

dangerous. Pay utmost attention according to the manual for operation, disassembly, reassembly,

maintenance, checkup and etc. Use of non-genuine parts might damage SELFJECTOR or impair human

safety. Be sure to employ genuine parts.

Perfectly assemble.

Many points of SELFJECTOR are connected by screws. When assembling, make sure tightening is

complete. Running with poor tightening is very dangerous. Doubly make sure of secure tightening

particularly of:

(A) Bowl nut

(B) Disc nut

(C) Cap nut of Vertical shaft

(D) Set bolt of Frame cover

(E) Lock nut (hexagon) of Inlet pipe

Be sure that tally marks of the bowl and other so marked parts are aligned.

If the tally mark is excessively mis-aligned when the Bowl nut is tightened, contact our company or

service agency.

Immediately stop if vibration is excessive.

Vibration of SELFJECTOR is caused by unbalance, ship oscillation,

SELFJECTOR installation and etc. If the vibration is excessive,

immediately stop SELFJECTOR without discharging sludge.

Then, check for the cause and take necessary corrective action to

ensure safety before restarting SELFJECTOR.

To be more specific, if the vibration at the point A of Fig. 1-1 exceeds

100 μm (peak to peak) at rated speed, stop SELFJECTOR. Even if readings are below 100 μm, continuous cruising ship vibrations 4-5 times higher than registered when external vibrating forces are small,

such as when the main engine is not in operation, could adversely affect

the durability of SELFJECTOR. In such case, stop SELFJECTOR

immediately. Then, check for the cause and take necessary corrective

action to ensure safety before restarting SELFJECTOR as described

above.

Fig. 1-1


! WARNING

Make sure of complete stoppage before loosening each section.

Make sure the bowl has complete stopped rotating before loosening or disassembling each section.

Whether completely stopped or not can be checked at the motor fan or Gear pump and Horizontal shaft

connecting section (Safety joint).

Take care in handling the parts.

SELFJECTOR is a precision machine. Handle it attentively away from impact and high temperature.

Particularly never heat the bowl parts (Bowl body, Bowl hood and etc.) by open flame nor weld them.

Beware of corrosion and erosion.

Periodically check whether any damage is produced by corrosion or erosion.

For details, contact our company or service agency.

Others

1. Before disassembling, turn off the starter.

2. Before treating a treating liquid other than specified initially, contact our company or service

agency.

3. The bowl is factory balanced. Never interchange bowl parts [Disc (1)] even within the same model.

For ambiguous points in the instruction manual, contact our company or

service agency.

1-5

1.4 Definition of terms

Density (ρ): Mass per unit volume. Specific gravity (γ): Ratio of mass to mass of water of the same volume. Varies with

temperature.

Oil feed rate: Volume per unit time of untreated

liquid upstream the purifier expressed in terms of

L/h or m3/h.

Actual capacity: Purifier treating capacity based

on SM Standard (eliminating sludge with 1.8 of

specific gravity and 2μm of diameter or more). (See "Feed rate" above.)

Feed liquid: Untreated oil to feed to purifier.

Light liquid: Oil treated by purifier or purified oil.

Heavy liquid: Separated moisture and heavy

components in oil or simply "water".

Sludge: Solids accumulated in bowl in narrow

sense. Mixture of solids, water and oil discharged

from bowl in wide sense.

Interface: Boundary surface between heavy and

light liquids in bowl.

Purifier operation (purifying operation):

Operation of separating into 3 phases or liquid,

liquid and solid or, here, into oil, water and solids.

(See "Purifier operation".)

Clarifier operation (clarifying operation):

Operation of separating into 2 phases or liquid

and solid or, here, into oil and solids.

(See "Clarifier operation".)

Parallel operation:

Operation with oil fed proportionally to several

purifiers arranged in parallel.

(See "Parallel operation".)

Series operation:

Operation by several purifiers arranged in series.

(See "Series operation".)

Total discharge type

Purifier designed to totally discharge all contained

in the bowl.

Partial discharge type

Purifier designed to partially discharge water and

solids only in the bowl. This type has the total

discharge function as well.

Abbreviations and units

L : Liter, Unit of volume.

H : Hour(s), Unit of time.

min-1: Number of revolutions per minute.

Hz : Number of frequency.

(cycles per second)

: Unit of diameter in mm.

mm2/S : unit of kinetic viscosity of oil. (= cSt)

ISO : Standards established by International

Standardization Organization.

VG : Indication of viscosity of lubricating oil in

accordance with ISO.

SELFJECTOR Instruction Manual Operation Manual1

Operation Manual12-1SELFJECTOR Instruction Manual

2 Configuration of oil purifying system

Fig. 2-1 shows a typical purifying system configuration with the automatic GSH-1 (HIDENS)

specification of SELFJECTOR.

1 SELFJECTOR A Dirty oil inlet

2 Gear pump B Purified oil outlet

3 Solenoid valves unit for operating water C Compressed air inlet

4 3-way cylinder valve (Feed valve) D Sludge & Water outlet

5 3-way solenoid valve E Water inlet

6 Multi-Monitor F Drain

7 Leakage Monitor function (LM) G Circulation

8 Discharge detector function (DD) P Pressure gauge

9 Water detector function (WD) C Compound gauge

10 Oil heater M Motor

11 Oil strainer

12 Flow control valve

13 Pressure control valve

Fig. 2-1

Note) Automatic GBC-1 specificationsare not provided with Water Detector (WD) and solenoid valve (SV9).Also, Discharge Detector (DD) is optional

for these specifications.


2.1 Gear pump

The gear pump feeds feed oil to the purifier. Mounted on the horizontal shaft of the purifier via a safety

joint, it is driven by the motor for the purifier.

The gear pump can be selected to match a particular treating capacity.

Instead of the gear pump, a separate pump may be used.

2.2 Oil heater

Installed midway between the gear pump and oil purifier, the oil heater warms feed oil fed by the gear

pump to an optimum treating temperature. The heater is classified into steam and electrical types. The

steam type is provided with a temperature control valve and the electrical type with a thermostat to

control the temperature.

Before oil is treated by the oil purifier, it must be heated up to a certain temperature according to the

particular oil viscosity and nature.

2.3 3-way cylinder valve

The 3-way cylinder valve is a pneumatically operated selector valve and feeds feed oil to the purifier.

When starting, stopped or discharging sludge, it is changed to return the oil via the bypass piping to the

tank.

2.4 Multi- Monitor (MM)

The Multi-Monitor forms an integrated detection system with a Leakage Monitor, a Discharge Detector

and a Water Detector. It has displays to indicate the operational status data of SJ-G series

SELFJECTOR such as flow rate, temperature, pressure and speed. This instrument contains a serial

board (RS485) that enables communication with the control panel.

2.4.1 Leakage Monitor Function (LM)

The Leakage Monitor detects a leakage of treated oil from the bowl's sludge outlet or heavy liquid

output by means of a pressure sensor and delivers an alarm signal to the automatic control panel via

the Multi-Monitor. The pressure sensor is located on the light liquid outlet-side bracket of the

SELFJECTOR and normally maintained under a certain level of pressure by means of a pressure

control valve. When a leakage occurs, an ensuing pressure drop is detected by the pressure sensor

and an alarm signal is sent to the automatic control panel.

2.4.2 Discharge Detector Function (DD)

The Discharge Detector monitors the horizontal shaft speed by means of a proximity sensor and

determines whether or not sludge discharge has properly taken place by means of an input data

comparison circuit. When abnormal discharge is detected, an alarm signal is issued to the automatic

control panel via the Multi-Monitor. In addition to this alarm output function, the Discharge Detector of

the partial discharge type purifier has a display function to tell whether or not the sludge discharge is

optimal for partial discharge adjustment.


2.4.3 Water Detector Function (WD)

The Water Detector is available in a pressure type. The pressure type is designed to monitor the

level of water accumulated in the bowl by means of a pressure sensor provided in the circulation line

that returns some of purified oil to the feed liquid inlet.

This way of water detection is called "G-HIDENS system".

When the water content of purified oil exceeds an alarm trigger level, the Water Detector issues

an output signal to the automatic control panel for sludge discharge via the Multi-Monitor.

2.5 Starter

The purifier is started by the starter. It is stopped by a signal from the control panel when an automatic

stop alarm has been generated.

2.6 Control panel

The control panel automatically controls the cycle of purifying the feed liquid by purifier and discharging

the sludge. Upon receipt of output signals from various detectors via the Multi-Monitor, the control

panel stops the oil feed, then the purifier after sludge is discharged.

2.7 Alarm panel

The alarm panel changes over the 3-way cylinder valve through switching. When a Multi-Monitor

output signal is received during running, the feeding is stopped.

2.8 Kinds (specifications) of oil purifying system

The purifying system including the oil purifier comes in 4 different types including automatic and manual

types.

Automatic types

1. GBC-1

(Total discharge type / Automatic control panel with CPU controller panel)

2. GSH-1

(HIDENS SYSTEM configuration / Total and Partial discharge / Automatic control panel

with CPU controller panel)

Manual types

1. GAP-11 (Manual discharge / Alarm panel provided)

2. Manual (Manual discharge / Alarm panel not provided)


2.9 Component devices of different versions

Component devices of automatic and manual types are as follows.

NOTE : Options are marked(△)2.10 Feature of Automatic types

The feature in which the different automatic types shown below.

SELFJECTOR are given different suffix of machine each Automatic type. However the machine

structure are same.

Automatic

Types

Feature Suffix of Machine type

GBC-1 Provided with a 3-way solenoid valve unit for total discharge.

The sludge discharge process makes a total discharge.

G

GSH-1 Provided with a 3-way solenoid valve unit for both total

discharge and partial discharge.

The sludge discharge process makes a total discharge,

whereas water is discharged in a partial discharge.

In some cases, water is discharged in a total discharge with

sludge, depending on water detection time.

For detailed information on the HIDENS system operation,

refer to Section 3.6.2 Clarifier operation and the separate

"Operation Manual 3".

GH

GBC-1 GSH-1 GAP-11 Manual

SJ : Control panel 1:1 1:1 1:0 1:0

CPUControl panel

Alarm panel ○Automatic ○ ○Operating water

solenoid valve unit Manual ○ ○Feed valve・3-way solenoid valve ○ ○ ○Leakage Monitor (LM) ○ ○ ○Discharge Detector (DD) △ ○Water Detector (WD) ○

○ ○


3 STRUCTURE of SELFJRCTOR

3.1 General

Fig. 3-1 outlines the structure of SELFJECTOR.

The power is transmitted from the motor through the

friction clutch to the horizontal shaft and is further

increased in speed and transmitted to the vertical shaft

through the spiral gear mounted on the horizontal shaft

and pinion on the vertical shaft.

The vertical shaft is supported by upper and lower

bearings.

The bowl mounted on the top of the vertical shaft rotates at

the speed of the vertical shaft.

To supply feed liquid to SELFJECTOR, the suction pump

(gear pump) is connected to the horizontal shaft through

the safety joint. To deliver light liquid, the centripetal

pump (impeller) is built in the top of bowl.

In addition, heavy liquid is forced out by a similar

centripetal pump.

3.2 Drive unit

3.2.1 Vertical shaft section

The revolution speed of the horizontal shaft is increased by

the vertical shaft pinion gear and the vertical shaft rotates the

bowl mounted on its top. The vertical shaft and bowl are

supported by upper springs and leaf springs radially

incorporated at 6 points on the upper bearing section and

lower springs in the lower bearing section so that they can

stably rotate.

Fig. 3-1

Vertical shaft

Upper bearing parts

Upper spring

Pinion gear

Lower bearing parts

Lower spring

Flat spring

Fig. 3-2

　


3.2.2 Horizontal shaft section

Between the motor and horizontal shaft, the

friction clutch is provided.

The horizontal shaft is supported by 2 ball

bearings built in the bearing housing (3) and

bearing housing (4). Between them, the spiral

gear is mounted. The bearing housings (3) and

(4) are provided with oil seals to avoid gear oil

leakage.

The horizontal shaft is directly coupled with the

gear pump by the safety joint.

3.2.3 Brake

By springs, the brake linings are pressed against the outer surface

of friction pulley to perform braking.

Use the brake only when quick stop is absolutely required in

emergency, for repair or checkup. For normal stoppage and not in

emergency, refrain from braking and allow the rotation to stop

coasting.

3.2.4 Friction clutch

A friction clutch is used for gentle starting and acceleration, thereby

preventing the motor from being overloaded.

The motor shaft has a friction boss provided with a friction clutch and

the horizontal shaft has a friction pulley. After starting, the motor

instantly turns at critical speed, the friction clutch lining is pressed

against the internal surface of the friction pulley via centrifugal force and

the power is transmitted to the friction pulley (horizontal shaft side) as

the friction pulley and lining slip with each other.

Normally, the bowl of small-size SELFJECTOR (SJ10G - SJ30G)

reaches its rated speed of rotation in less than 5 minutes, and

middle-size SELFJECTOR (SJ50G - SJ70G) and large-size

SELFJECTOR(SJ100G - SJ150G) in less than 10 minutes.

Friction clutch

Spiral gear

Safety joint

Gear pump

Bearing housing (4)Oil seal

Oil seal

Bearing housing (3)

Fig. 3-3

Brake lining

Friction pulley

Horizontal shaft

OFF

ON

Fig. 3-4

Friction clutch

Friction boss

Friction pulley

Fig. 3-5


3.3 Bowl

3.3.1 Structure of bowl

The bowl vessel mainly consists of body, hood and nut. The bowl incorporates separation chamber

composed of disc (1) and top disc and distributor, which distributes feed liquid from the bowl inlet to the

separation chamber uniformly.

There is a main cylinder, which slides vertically by water pressure to discharge sludge separated and

accumulated on the inner wall of bowl during operation.

At 2 points on the outer periphery of bowl, there are pilot valve assemblies for controlling the main

cylinder slide.

When feed liquid introduced through the feed liquid inlet through the distributor to the separation

chamber passes through the gap between discs (1), solids and water are separated and purified oil is

continually delivered outside by the centripetal pump (light liquid impeller) located on the top of bowl.

Separated water is continuously discharged outside through the heavy liquid impeller.

Gravity disc

For purifier operation, the interface for separating light liquid and heavy liquid in the bowl must be held

to within a certain range. On SELFJECTOR, gravity discs with different inner diameters are used

according to the gravity of oil to be treated, thereby changing the interface position.

Select an optimum gravity disc according to "Gravity disc selecting procedure" in Operation manual 2. ※：For the HIDENS specification, being for clarifier operation, requires no change of gravity discs. Dirty oil inlet

Separated water outlet

Purified oil outlet

Light liquid chamber

Bowl hood

Bowl nut

Bowl body

Main cylinder

Sludge

Distributor

Gravity disc

Disc (1)

Top disc

Pilot valve

Water supplying device

Assembly

Heavy liquid chamber

Fig. 3-6


3.3.2 Discharge mechanism

Total discharge is as follows.

Purifying operation process

A centrifugal force acting on the pilot valve seals the

valve seat and the water pressure chamber for closing

bowl is filled with operating water. The operating water

pressure pushes up the main cylinder to seal the main

seal ring for purifying operation.

Operating water for closing bowl is intermittently

introduced into the bowl closing water pressure chamber

for a given period of time during purifier operation. In the

water pressure chamber, the centrifugally generated

pressure of water that turns with the bowl is balanced with

the supplied water pressure told the water surface at a

certain level.

Opening bowl process

Operating water for opening bowl is fed for a certain time to

the water pressure chamber for opening bowl. It partly

goes out through the drain nozzle. More operating water

for opening bowl is supplied and fills up the water pressure

chamber for opening bowl. As its pressure slides the pilot

valve toward the shaft center, the seal of valve seat breaks

and operating water for closing bowl flows out from the

bowl.

Water pressure chamberfor closing bowl

Pilot valve

Valve sheet

Main seal ringMain cylinder

Fig. 3-7

Water pressure chamberfor opening bowl

Operating water foropening bowl

Fig. 3-8


Sludge discharging process

When operating water for closing bowl goes out, there is

no more force of pushing up the main cylinder that, then,

is pushed down by the pressure in the bowl. The seal of

main seal ring breaks and sludge is instantly discharged

outside the bowl.

Closing bowl process

After the sludge discharge, operating water for closing

bowl is fed to the water pressure chamber for closing

bowl and, when it is filled up, the main cylinder is pushed

up to seal the main seal ring.

NOTE

In the HIDENS system specification, partial discharge is effected to let out water accumulated in

the bowl, which is basically the same as the total discharge mode, except that the main cylinder

opening duration is shorter.

Operating water foropening bowl

Fig. 3-9

Operating water forclosing bowl

Fig. 3-10


3.4 Water supplying device

The water supplying device is provided under the bowl to supply operating water for controlling the

discharge of sludge from the bowl to each water pressure chamber (for opening bowl, for closing bowl).

Operating water for opening bowl is fed from section A in

Fig. 3-11 and enters the water pressure chamber for opening bowl.

Operating water for closing bowl is fed from section B and enters the water pressure chamber for

closing bowl.

Operating water for closing bowl is intermittently fed for a certain time during the purifying running.

Because operating water in the water pressure chamber for closing bowl rotates together with the bowl,

the pressure generated its centrifugal force and the pressure of operating water for closing bowl balance

and the water level stabilizes at a certain position.

NOTE

Operating water for closing bowl : Water for pushing up the main cylinder and closing

the sludge outlet.

Operating water for opening bowl : Water for lowering the main cylinder and

discharging sludge.

Bowl

Vertical

shaft

Water pressure

chamber for closing bowl

Water pressure

chamber for opening bowl

Water supplying device

AB

Fig. 3-11


3.5 Centripetal pump

Two spiral impellers are built in the bowl top to force out light and heavy liquids from the machine. The

impeller consists of a disc of a certain thickness provided in its interior with spiral grooves. It is dipped in

oil that rotates together with the bowl and oil is let out according to the grooves resorting to its own

rotation.

Fig. 3-12


3.6 Purifier operation and clarifier operation

3.6.1 Purifier operation

The purifier operation refers to a separation into 3 phases or oil, water and sludge. It is most

commonly employed.

1. The high limit of specific gravity of oil to treat is 0.991 (at 15℃) practically. 2. For normal operation, the interface must be set to within a specified range by changing the

diameter of gravity disc.

3. Before introducing oil, water sealing is required so that oil fill not flow out through the heavy liquid

outlet.

4. The purifier has a heavy liquid outlet for continually discharging separated water.

Fig. 3-13 is the cross sectional view of the bowl of SELFJECTOR (SJ-G series) under purifier operation.

Feed liquid is introduced from the feed liquid inlet into the separation zone by way of the distributor.

While separated heavy liquid (water) and solids go to the outer periphery of the bowl, light liquid moves

inside through between the discs and is forced out by the light liquid impeller. Heavy liquid passes

outside the top disc and flows over the gravity disc to be discharged by the heavy liquid impeller.

Fig. 3-13

Feed liquid(dirty oil) inletLight liquid(purified oil) outletDischarge hole

Heavy liquid(water) outletSealing water inletLight liquid chamberHeavy liquid chamberInterfaceGravity discDistributor DiscTop disc


3.6.2 Clarifier operation

The clarifier operation refers to a separation into 2 phases or oil and (water + sludge).

1. If the specific gravity of oil to be treated exceeds 0.991 (at 15 ) , clarifier operation with the G-

HIDENS series machine is recommended.

2. The G-HIDENS series machines ensure stable clarifier operation for fuel oils up to 1.01 (at 15 ) in

gravity.

3. Irrespective of gravity, the G-HIDENS series machines accept oils for treatment without adjustment

with the gravity disc.

4. The G-HIDENS series machines require no water sealing.

5. In the setup for clarifier operation, there is no heavy liquid outlet for letting separated water out of

the machine so that separated water cannot be continuously discharged.

The G-HIDENS system is designed to detect the accumulation of separated water at a predetermined

level by means of a presser sensor installed in the circulation line and discharge it out of the bowl. It

combines the feature of the clarifier which is leakage-free operation and that of the purifier which is the

capability of water separation.

Fig. 3-14 shows the cross sectional view of the bowl of a typical G-HIDENS system SELFJECTOR

(SJ-GH series) in clarifier operation.

Feed liquid is introduced from the feed liquid inlet into the separation zone by way of the distributor.

While separated heavy liquid (water) and solids go to the outer periphery in the bowl, light liquid moves

inside through between the discs and is discharged by means of the light liquid impeller. Some of light

liquid passes outside the top disc and is returned to the feed liquid port via circulation line by means of

the heavy liquid impeller. To make this take place, pressure (0.1 MPa) is built in the circulation line

through back pressure valve. Upon arrival of accumulated water in the bowl at the top disc outside level,

the circulation of light liquid is stopped with an ensuing drop in circulation line pressure. This pressure

drop (the sign of maximum water accumulation in the bowl) is detected by a pressure sensor, a sensor

output is transmitted to the Multi-Monitor and accumulated water is released from the bowl as a result.

While water is normally discharged in the partial discharge mode, total discharge with sludge can take

place, depending on the time spent for water detection.

Fig. 3-14

0Feed liquid(dirty oil) inletLight liquid(purified oil) outletPressure sensor0　 Open Light liquid chamberHeavy liquid chamberGravity discDistributor DiscTop discBack pressure valve Close


3.7 Parallel operation and series operation

So long as the feed rate is within the actual capacity, 1 stage of purification suffices basically.

When, however, treating oil for which catalyst mixture, excessive sludge, etc. are expected, raising the

purifying effect is required utilizing spare machine(s).

In this case, the purifiers are subjected to either:

Parallel (parallel purifying) operation

Series (series purifying) operation.

When operating several machines as shown above, the parallel operation is preferable to, for its better

separating effect than, the series operation.


3.7.1 Parallel operation

For parallel operation, 2 or more SELFJECTORs are arranged in parallel.

Fig. 3-15 exemplifies piping for parallel operation.

NOTE

In the case of parallel operation with two units of SELFJECTOR, the two machines share oil feed

to the whole system half and half between them. Select the sizes of piping, with flow velocity

and pipe resistance taken into account, so that pipes one size larger in bore diameter are used

upstream of the inlet line branching point and downstream of the return and outlet line meeting

point, for example.

Fig. 3-15


3.7.2 Series operation

! CAUTION

In case of a series operation by 2 SELFJECTORs, detach the gear pump furnished with the

latter stage SELFJECTOR from the safety joint because it is not used.

Do not use the oil heater for the latter stage.

For a series operation, the former stage is for purifier operation and the latter stage is for clarifier

operation usually.

In case of a series operation by 2 machines, a general practice is purifier operation for the former

stage and clarifier operation for the latter stage.

The feed rate must be the same as for a single operation.

Fig. 3-16 exemplifies piping for a series operation.

NOTE

In the series operation, when the first-stage SELFJECTOR enters into the discharge process, oil

feed to the second-stage SELFJECTOR does not take place (as is the case with stop by an alarm

signal) in the meantime. The second-stage SELFJECTOR, therefore, requires an interlock

system to prevent the Multi-Monitor from issuing a false Leak Monitor output signal. (For general

description and working principle of the Leak Monitor, refer to Section 5.2.)

Fig. 3-16


4 Motor, starter and control panel

4.1 Motor

The following concerns specifications of class F insulated three-phase squirrel cage type induction

motor.

4.1.1 Precautions in handling

! CAUTION:

Operation in explosive atmosphere is not allowed. Otherwise, injury, fire,

etc. might be caused.

Turn off power before operation. Otherwise, electric shock, etc. might

occur.

Connect the power cable according to the connection diagram.

Do not force to bend or pull the power cable or leads.

Do not introduce fingers or objects into openings of the motor.

While running, do not touch the motor which may be considerably hot.

4.1.2 Motor characteristics

4.1.2.1 Starting characteristics

The motor power is transmitted via the friction clutch to the horizontal shaft so as to mitigate the starting

load. When the motor is started, it immediately reaches near the rated speed, gradually accelerating

the bowl via friction clutch. During this while, the rated motor power is exceeded and, therefore, a

motor enduring an overload is used as given in Table 4 -1.

Table 4 -1

Overload Duration

25% overload 30 min

50% 〃 15 〃75% 〃 5 〃100% 〃 1 〃


4.1.2.2 Starting characteristics curves

Fig. 4-1 exemplifies starting characteristics curves.

Fig. 4-1

(min )

1000----5

2000---10

3000---15

4000---20

5000---25

6000---30

7000---35

8000---40

Rated electric current(12.7A)

Revolution

speed of motor

(A)

Time (min)0 5 10 15

Electric current

20

SJ50G(7.5KW 4P 440V 60Hz)

Characteristic curve at start-up

Revolution speed of bowl

-1


4.1.2.3 Output and speed of revolution

If the speed of revolution drops, the treating capacity of SELFJECTOR lowers. If the speed is higher

than rated, the safety is compromised. Table 4 -2 gives motor output and speed for different models.

Table 4 -2

Designation *1 Rated output (kW) Poles Rotation speed（min-1）G GH 50Hz 60Hz

SJ10G / GH 3.7 5.5

SJ20G / GH

SJ30G / GH 5.5 7.5

SJ50G / GH 7.5

SJ60G / GH

SJ70G / GH 11

11

SJ100G / GH

SJ120G / GH 15

SJ150G / GH 18.5

18.5

4Approx.

1500

Approx.

1800

NOTE1 : G type is standard machine, GH type is G-HIDENS machine.

4.1.2.4 Other specifications of motor

Continuous rating

Insulation: Class F

Ambient temperature: 50℃ max. Allowable voltage fluctuation: 10% of rated voltage

4.1.3 Motor structure

4.1.3.1 Type

Flange-mounted horizontal shaft totally enclosed fan-cooled

type (indoor type)

Turning direction: Counterclockwise as viewed of load (CCW)

4.1.3.2 Structure of wire lead-in

When used on ships, the structure must conform to JIS F8801

"Marine watertight cable glands (for box)" (water-proof glands).

4.1.4 Rated current intensity

Table 4 -3 gives rated current intensities of standard motors in case of 60Hz.

Table 4 -3 （Unit：A）Rating 3.7kW 5.5kW 7.5kW 11kW 15kW 18.5kW

Voltage 440V 6.48 9.25 12.7 18.5 25.0 31.0

220V 12.9 18.5 25.3 37.0 49.0 61.0

Fig. 4-2


4.2 Starter

On the starter panel, there are "push-button" for starting the purifier motor, "indicator lamp" and

"ammeter". It incorporates "overload relay (thermal relay)".


! CAUTION

Do not put combustible things nearby. Otherwise, a fire might occur.

Before proceeding to wiring, make sure power is turned off.

Only a specialized electrician is allowed to conduct wiring.

Using grounding terminals in the starter panel and out, ground the starter

to the hull to make it electrically effective. (Be sure to ground.)

Make sure the rated voltage and frequency of the starter panel match the

source voltage and frequency.

4.2.2 Starter structure

Made of steel sheet, drip-proof, wall-mounted type

External wire introduction: Gland

4.2.3 Overload relay (thermal relay)

Resetting : Manual

Operation characteristics : Time limit characteristics

Current setting : See Table 4 -3

Fig. 4-3


4.2.4 Connection of Starter

Reference to Fig. 4-4 (Internal connection in the SELFJECTOR starter at AC440V.) 몊

NOTE: 1) Terminal No. PR and PC are connected to customer's control console.

2) Terminal No. M11,M12,M1,M5,A1 and A2 are connected to control panel or alarm panel. (In case of manual type, Not need connection.) Operation Manual14-5

Fig. 4-4


4.3 Control panel

The control panel repeatedly and automatically performs SELFJECTOR operating steps shown in Table

4 -4.

It also receives alarm signals from detectors and, after due processing according to particular alarms,

stops the purifier.

The control panel comes in different types given in Table 4 -4.


! CAUTION

Do not put combustible things nearby. Otherwise, a fire might occur.

Before proceeding to wiring, make sure power is turned off.

Only a specialized electrician is allowed to conduct wiring.

Connect the ground terminal of the control panel to an electrically effective

point on the hull. (Perform grounding.)

Make sure the rated voltage and frequency of the control panel match the

source voltage and frequency.

Close bowl

Sealing water

To stop the purifier

Alarm

Purifying operation

Discharge sludge

Replacement water

Fig. 4-5

Table 4 -4

Control type

For 1 purifier GBC-1 CPU

GSH-1

CPU For 1 purifier

HIDENS configuration

(total and partial

discharge)


4.3.2 Detail explanation of control panel (model GBC-1 and GSH-1)

Detail explanation of the automatic panel are described on Operation Manual 3.


5 Multi-Monitor

5.1 Multi-Monitor

5.1.1 General

The Multi-Monitor forms an integrated detection system with various detectors and data displays.

LED display functions (Flow rate, Temperature, Pressure, Revolution number)

Leakage Monitor function (LM)

Discharge Detector function (DD)

Water Detector function (WD)

Fig. 5-1 Block Diagram of Multi-Monitor


5.1.2 Kind of Multi-Monitor

The Multi-Monitor is available in three types (refer to Table 5-1) for selection according to the type of

automatic system.

Table 5-1

Functions MM1 MM2 MM3

Applied automatic control device GBC-1

Alarm panel : GAP-11

GBC-1

(with DD)

GSH-1

Leakage Monitor Function (LM) ○ ○ ○Indication of inlet temperature ○ ○ ○Indication of flow rate ○ ○ ○Indication of outlet pressure ○ ○ ○Discharge Detector Function (DD) ― ○ ○Indication of revolution number ― ○ ○Water Detector Function (WD) ― ― ○Communication (RS485) ― ○ ○

Fig. 5-2 Sketch Drawing of MM1 Fig. 5-3 Sketch Drawing of MM2, MM3

Pressure adjustment LED (yellow) Rotation display LED (green)Trouble display LED (red)Pressure adjustment LED (yellow)


5.1.3 Explanation of internal switches on Multi-Monitor

Fig. 5-4 shows an internal view of the Multi-Monitor.

Fig. 5-4 Internal Drawing of Multi-Monitor (MM2, MM3)

NOTE

In case of the Multi-Monitor-1 (MM1), switches from number 3 to 12 and 22 are not attached to the

Multi-Monitor. The terminal block (No.23) consists of the board number 1 to 17.

⑱

⑰

⑯

⑮

⑭

⑬

⑫

③

⑥

⑤

④

②

⑨ ⑧ ⑦

①

⑩

⑪

⑲

⑳


Table 5-2 Designation of Internal Switches on Multi-Monitor

No. Designation No. Designation

1 Power switch 13 Temperature indication adjustment VR

2 LM alarm output switch 14 Flow rate indication adjustment VR

3 DD alarm output switch 15 Function setting switch

SW1: Select of setting item

4 Water detection output switch 16 Function setting switch

SW2: Forward item

5 Temperature alarm output switch 17 Function setting switch

SW3: Backward item

6 Rotation output switch 18 Function setting switch

SW4: Enter

7 1: 50Hz / 60 Hz selector switch

2: Partial ON/OFF selector switch

19 Pressure display lock switch

8 Discharge measurement switch 20 Input signal confirmation LED (Green)

9 Datum sensitivity VR 21 Output signal confirmation LED (Red)

10 Center voltage of discharge quantity setting

switch

22 Partial discharge quantity confirmation LED

11 Discharge quantity setting switch 23 Terminal block

12 Water detection selector dial

0:No water detection / 1: Water detection

- -


5.1.4 Identification and Location of Multi-Monitor Sensors

Fig.5-5 shows the identification and location of the Multi-Monitor sensors.

5.1.5 Routine running

Turn off power of Multi-Monitor before SELFJECTOR is left unused for a long time.

After turning on power of Multi-Monitor again, perform at least 10 minutes warm-up so as to stabilize

the internal circuit.


! CAUTION

The Multi-Monitor is a precision instrument. Handle it with utmost attention so as not to give

shock, etc.

Use the Multi-Monitor at ambient temperatures between 0 and 60 .

Fig. 5-5 Identification and Location of Multi-Monitor Sensors

Ｒ


5.2 Leakage Monitor Function (LM)

5.2.1 General

The Leakage Monitor Function of the Multi-Monitor is a protective

device that detects:

Leakage of treated oil to feed liquid outlet

Leakage of treated oil from bowl's sludge outlet because bowl is

not properly closed

attributable to any reason and notifies it to SELFJECTOR control

panel via the Multi-Monitor to minimize the loss of treated oil.

5.2.2 Operating principle

The pressure sensor installed on the light liquid outlet connecting

piping of SELFJECTOR monitors the pressure at all times and if, for

any reason, the pressure has dropped when the flow has decreased

from a normal rate, deems treated oil is out-flowed and outputs an

error signal. Use of a precision pressure sensor allows to detect a

large leakage flowing to the heavy liquid side as well as a slight

leakage due to poor bowl opening.

In the normal running, pressure control valve that is arranged on the treated oil outlet piping adjusted so

as to apply a certain pressure. If, on account of accidental leakage of purifier, the pressure has dropped

below an alarm trigger or lower limit level, an alarm is outputted.

NOTE1

To prevent a false alarm, when actual back pressure, light liquid outlet pressure, falls below the alarm

trigger or lower limit level, the Leakage Monitor will not issue a "Leakage" signal until after a certain period

of time. The alarm trigger pressure is averaged by the CPU in the Multi-Monitor to follow with actual back

pressure that is fluctuated by pressure pulsation at the light liquid outlet.

Fig. 5-6

Fig. 5-7

±


Delay Timer

After starting the feed, the light liquid pressure rises gradually. To prevent an alarm from being delivered

during the period where the pressure achieve set pressure, a delay timer is provided.

Hold Timer

As soon as the pressure has dropped below the alarm pressure while feeding, the timer for feeding starts

counting and, if the time is up, delivers an alarm. If the preset pressure level is recovered while counting, the

timer resets itself.

NOTE

Be sure to adjust and set the light liquid side delivery pressure.

Standard value : 0.15 MPa {1.5 kgf/cm2}

Since its operating principle is such that this instrument needs a steady pressure independent of

the piping pressure loss downstream from SELFJECTOR for proper detection, adjust the pressure

control valve to maintain the instrument under a necessary level of back pressure during the

operation.

When a light liquid delivery pressure beyond the standard level is required, refer to "Leakage

Monitor (LM) " in the Operation Manual 2.

5.2.3 Connecting with control panel

To avoid erratic alarms, "feeding" signal is inputted from the automatic control panel or alarm panel so that no

alarm could be outputted unless when "feeding".

NOTE

For a manual type, the feeding signal contact is normally closed to simulate feeding. To avoid a

false alarm during sludge discharge, therefore, turn off the "MM Function Switch" on the starter

panel before sludge discharge, then turn it on again after feeding is started.

Fig. 5-8


5.2.4 LED display

1. "Pressure adjustment"（yellow）The pressure adjustment LED (yellow) flashes when light liquid pressure varies by ±15% or less from the Multi-Monitor setting and stays illuminated while the variation is less than ±3%.Adjust the back pressure regulating valve so as to just light the LED when feeding.

(Set the back pressure to the standard setting for light liquid pressure is 0.15 MPa (1.5 kgf/cm2)).

2. "Leakage display"（red）When a leakage is detected, the Error LED (red) on the Multi-Monitor panel and Leakage signal output LED

(red) above the boards in the Multi-Monitor are illuminated and an alarm is issued to the control panel at the

same time. The oil purifier is stopped as a result after sludge is discharged.

Specifically, the Leakage LED is lit when:

Pressure fails to reach a constant level before the delay timer is up.

Pressure falls below the alarm trigger or lower limit level and fails to return to a constant level before the

hold timer is up.

For self-diagnosis, in the case of an abnormality with the light liquid sensor described below, the "Light Liquid

Sensor Abnormal" LED (red) in the Multi-Monitor is illuminated, with "Error" and the corresponding error

identification number displayed in the upper and lower seven segment displays, respectively, and an alarm is

issued to the control panel at the same time. The oil purifier is stopped as a result after sludge is discharged.

An extraordinarily high voltage (equivalent to 0.45 MPa {4.5 kgf/cm2}) is detected at the pressure sensor.

NOTE

When the self-diagnosis function is actuated, the Multi-Monitor holds "Error" and error identification

number in display, which cannot be cleared until power is turned off.

After the cause is identified and eliminated, reset by turning power off, then on.

Fig. 5-9Fig. 5-10

● ｒｒｏ

） ×



Normally, keep the LM alarm output switch in the Multi-Monitor

in the ON position.

NOTE1

The P(pressure drop) value in regard to the Leakage Monitor function varies in response to the

changing level of actual back pressure. Therefore, it needs no adjustment even if light liquid side

pressure differs from its initial set value unless the deviation exceeds 0.2 MPa (2.0 kgf/cm2).

NOTE2

On the method of the back pressure regulating valve, make adjustments correctly in accordance

with appropriate procedures described in " Leakage Monitor Function (LM) " in the Operation

Manual 2.

Wrong setting or adjustment may cause a false leakage alarm.

5.2.6 Items to adjust

Normally, the back pressure regulating valve requires no adjustments after set up at once, except in the

following cases. For the adjusting method, refer to "Leakage Monitor Function (LM)" in the Operation Manual

2.

Adjustment Procedure

Change treating size of

SELFJECTOR

Adjust the light liquid pressure to a desired level by

pressure control valve.

Change light liquid pressure Change light liquid pressure setting memorized in

the Multi-Monitor.

Fig. 5-11

ＬＭ alarm output switch


! CAUTION

When adjusting light liquid outlet side pressure and flow rate or changing values (light liquid pressure,

P(pressure drop), minimum light liquid pressure level, etc.) preset in the Multi-Monitor, be sure to

refer to section 4. Multi-Monitor and section 5. Operation in the Operation Manual 2 and follow the

procedures described there. Failure to follow given instructions could result in a false alarm or cause

damage to the machine.

5.2.7 Factory settings (main value)

Delay timer : 40 sec

Hold timer : 15 sec

Set pressure (Set press.) : 0.15 MPa (1.5 kgf/cm2)

Pressure drop (Δp) : 0.02 MPa (0.2 kgf/cm2)


5.3 Discharge Detector Function (DD)

5.3.1 General

The Discharge Detector Function (DD) of the

Multi-Monitor is a protective device that monitors sludge

discharge from the SELFJECTOR and sends an alarm

signal to the automatic control panel when it detects an

abnormal discharge.

5.3.2 Operating principle (Alarm function)

The Discharge Detect relies on the rotation speed

change of the horizontal shaft to do the action; when the

rotation speed falls to a preset level due to sudden loss

of energy by sludge discharge, the Discharge Detector

detects it by means of a proximity switch installed on the

horizontal shaft to determine that sludge discharge has

taken place.

Also, the Multi-Monitor tells that the purifier is in

operation for safety and precaution through the rotation

display LED (green).

In addition, as a self-diagnosis function, the trouble

display LED (red), also on top of the Multi-Monitor, is lit

to indicate a troubled purifier when the detector output is

equivalent to 2500 rpm or more or when rotation pulses

skip.

5.3.3 Connecting with control panel

To prevent a false alarm, the Multi-Monitor is fed with "discharging" signal from the automatic control panel

during sludge discharge and issues an alarm signal only during feeding.

Fig. 5-12

Fig. 5-13


5.3.4 LED displays

1. "Rotation display"（green）Indicates the purifier is rotating and externally notifies safety alarm/caution.

Rotating : Flashing

Standstill: Lighting

2. "Trouble display"（red）As a self-diagnostic function, the LED lights any of the following cases. ⅰThe output corresponds to 2500 rpm of speed or higher (A circuit failure is suspected.) ⅱThe proximity switch input signal is unstable (The proximity switch may be out of position.)

Correct its position. This LED goes out as soon as its input signal has been stabilized.

NOTE

The trouble display LED (red) may be transiently illuminated when the purifier is in or out of

operation, which is no indication of the detector being in trouble.

3. "No-Discharge display"（red）In the state of a "discharging" signal being fed from the automatic control panel, if there is not a predetermined

amount of speed drop in the oil purifier, the Error LED (red) on the Multi-Monitor panel and "No -Discharge"

signal output LED (red) above the boards in the Multi-Monitor are illuminated. At the same time, an alarm is

delivered to the Multi-Monitor and the oil purifier is stopped as a result.

Fig. 5-14 Fig. 5-15

●

×



Normally, keep the DD alarm output switch in the Multi-Monitor in the ON position.


Normally, the Discharge Detector requires no adjustments. For further information, refer to "Discharge

Detector Function (DD)" in the Operation Manual 2.


! CAUTION

This is a precision instrument. Handle it with utmost attention so as not to give shock, etc.

Securely tighten screws to mount the proximity switch

(to torque 60 kg cm max.)

Keep the turning shaft stopped when mounting the proximity switch.

Do not use other proximity switches than furnished with the instrument


5.4 Water Detector Function (WD)

5.4.1 General

The Water Detector Function (WD) of the Multi-Monitor is a device to prevent separated water from leaking

into light liquid (purified oil).

5.4.2 Pressure sensor type water detector (GSH-1/MM-3)

5.4.2.1 Operating principle

The Water Detection system provided with a pressure sensor, which is called G-HIDENS system, is controlled

on the automatic control panel (GSH-1) via the Multi-Monitor (MM-3).

The G-HIDENS system constantly monitors separated water being accumulated in the bowl by means of a

pressure sensor installed in the circulation line and causes separated water to be discharged before it leaks

into light liquid (purified oil).

In the clarifier operation, some of light liquid (purified oil) is returned to the feed liquid inlet via circulation line.

The circulation line, which is provided with a back pressure valve, pressure sensor and pressure gauge, is

maintained under a required level of back pressure by means of the back pressure valve, with the shut-off

valve in the heavy liquid outlet line fully closed.

Upon arrival of separated water in the bowl at the top disc outside level, the circulation of light liquid is stopped

with an instantaneous drop in circulation line pressure. Detecting this pressure change, the pressure sensor

sends a signal to the control panel via the Multi-Monitor to tell that the predetermined quantity of separated

water has been accumulated in the bowl and separated water is discharged, normally in the partial discharge

mode. In some cases, total charge with sludge takes place, depending on time spent before detection of

pressure drop.

Photo 5-1 Pressure sensor type water detection system

( G-HIDENS system )


5.4.2.2 Connecting with control panel

To prevent a false alarm, the Multi-Monitor is fed with "feeding" signal from the automatic control panel and

issues an alarm signal only during feeding.

Fig. 5-16

Fig. 5-17

0Feed liquid(dirty oil) inletLight liquid(purified oil) outletPressure sensor0　 Open Light liquid chamberHeavy liquid chamberGravity discDistributor DiscTop discBack pressure valve Close


5.4.2.3 LED displays

"Water detection display"（red）In the state of being fed with "feeding" signal from the automatic control panel, when the pressure sensor in

the G-HIDENS system circulation line detects the arrival of separated water at the predetermine level in the

bowl, the Error LED (red) on the Multi-Monitor panel and the confirmation LED for output signal "Water

Detection" LED (red) above internal boards in the Multi-Monitor are illuminated. At the same time, a signal is

delivered to the control panel and the oil purifier is stopped after sludge discharge.

Also, for self-diagnosis, when an extraordinarily high voltage (equivalent to 0.45MPa {4.5 kgf/cm2}) is detected

at the pressure sensor, the "Water Sensor Abnormal" output LED (red) in the Multi-Monitor is illuminated, with

"Error" and the corresponding error identification number indicated in the upper and lower seven segment

displays, respectively. At the same time, an alarm is issued to the control panel and the oil purifier is stopped

as a result after sludge discharge.

NOTE

To prevent a false alarm due to pressure fluctuation or pulsation at the start of oil feed or during

normal running, the Delay Timer and Hold Timer are provided. Either timer is actuated when

pressure falls below the preset level during running. If pressure fails to return to normal after the

timer is up, the detector recognizes it as a "Water Detected" status and sends an alarm signal to the

control panel.

NOTE

When the self-diagnosis function is actuated, the Multi-Monitor holds "Error" and the error

identification number in display, which cannot be cleared until power is turned off. After the cause

is identified and eliminated, reset by turning power off, then on.

Fig. 5-18 Fig. 5-19

●ErrorProximity switch

×


5.4.2.4 Routine running

For clarifier operation that needs the Water Detector Function, select "Water Detector Function" on the Water

Detector Function selector dial in the Multi-Monitor. (See Fig. 5-19) For purifier operation that needs no Water

Detector Function, select "No Water / Heavy liquid Detector Function" on the same dial.

With the Water Detection output switch (See Fig. 5-19) in the ON position, the Water Detector monitors

water being accumulated in the bowl. When it detects the arrival of water at predetermined level, it sends

an output signal to the control panel and causing water to be discharged.

Normally, clarifier operation is performed with the Water Detection output switch placed in the ON

position.

NOTE

When clarifier operation is switched to the purifier operation, the Water Detector Function selector

dial in the Multi-Monitor setting must be from " Water Detector Function " to " No Water / Heavy

liquid Detector Function " but the position of the Water Detection output switch needs not be

changed to OFF.

5.4.2.5 Items to adjust

Normally, the Water Detector requires no adjustments. For further information, refer to "Water Detector

Function (WD)" in the Operation Manual 2.

Water Detection output switch 「ＯＦＦ」position Water Detection output switch 「ＯＮ」position

No Water/Heavy liquid Detector Function Water Detector Function Heavy liquid Detector Function(For optional use)


5.5 Partial discharge detection function (GSH-1)

The automatic GSH-1 system combined with Multi-Monitor MM-3 has a Partial Discharge Detection Function

that, in addition to sludge discharge monitoring, indicates whether or not sludge discharge is optimal for partial

discharge adjustment.

5.5.1 Operating principle

When the Partial Discharge Detection Function of the Multi-Monitor monitoring the horizontal shaft rotation

speed of the SELFJECTOR detects a rotation speed drop (peak hold) during sludge discharge, it compares

the data with the optimal discharge value preset for each SJ-G model to determine if the quantity of discharge

effected is optimal. And the Multi-monitor indicates the result of comparison through confirmation LEDs

(Over, Just, Under) for partial discharge. (See Fig. 5-22)

Fig. 5-22

Control / LED Function

Power switch ON/OFF control of Multi-Monitor power

DD alarm output switch ON/OFF control of discharge alarm output

50Hz / 60Hz selector switch Used to select SELFJECTOR power source frequency (50Hz or 60Hz).

Partial ON / OFF switch Used for constant monitoring of sludge discharge to determine optimal or otherwise. The status of sludge discharge is indicated through partial discharge LEDs.

Discharge measurement switch

Measures quantity of sludge discharged only once to determine if discharge is optimal. Pressing this button switch illuminates green LED in it and starts measurement of sludge discharge (if partial ON/OFF switch is OFF).

OVER (red) Lit when discharge is more than preset.

JUST（green） Lit when discharge is optimal as preset.

UNDER（red） Lit when discharge is less than preset.

Partialdischargeconfirmation

LED MEASURING (green) Lit when discharge measurement switch is pressed.



5.5.2.1 50Hz / 60Hz selector switch

Remove the front cover of the Multi-Monitor and set the switch (See Fig.5-22) to the power frequency of the

SELFJECTOR (50 Hz or 60 Hz).

NOTE

The switch in wrong position prevents the Partial Discharge Detector from measuring the quantity

of sludge being discharged accurately. Be sure that the switch in the right position before discharge

measurement.

5.5.2.2 Measure of the amount of discharge

There are two purposes for which sludge discharge measurement is performed.

1. Monitoring during normal running

Set the partial ON/OFF switch (See Fig. 5-22) to ON. The detector becomes ready to constantly monitor

partial discharge for "No-Discharge" status. Normally, the SELFJECTOR is run with this switch in the ON

position.

2. Partial discharge adjustment / confirmation

Set the partial ON/OFF switch to OFF, then press the discharge measurement switch (See Fig. 5-22).

Measurement is immediately effected - only once.

NOTE

With the partial ON/OFF switch in the ON position, the discharge measurement switch is

inoperative.

Partial ON / OFF switch 「ＯＮ」position Partial ON / OFF switch 「ＯＦＦ」position


5.6 Display Function

5.6.1 General

The Multi-Monitor is provided with two 4-digit seven segment displays (upper and lower) that indicate

SELFJECTOR sensor output data (flow rate, temperature, pressure, rotation number, etc.) and error. Settings

can be altered by use of four function setting switches (SW1 - 4) and altered data are stored in the internal

memory of the Multi-Monitor.

5.6.2 Configuration of display

In normal operation, the flow rate is incrementally indicated in the upper seven segment display at every 5

seconds. In the lower display, the feed liquid temperature and light liquid pressure are indicated in the

same way.

Using the function setting switches (SW1 - 4), the feed liquid temperature, light liquid pressure and speed

(MM-2 and MM3 only), and circulation line pressure (MM-3 only) can be fixedly indicated in the lower

seven segment display.

In the case of an error, "Error" and the corresponding error identification number appear in the upper and

lower seven segment displays, respectively. (See Table 5-3.)

At the time of setting change, the setting number and set value are indicated in the upper and lower seven

segment displays, respectively.

Fig. 5-23


Table 5-3

Normal running Error display Change the setting items

Upper Flow rate Error display Setting number

Lower Inlet temperature

Light liquid pressure （ Revolution number ）（ Circulation line

pressure ） Identification number Set value

NOTE

(Speed): Multi-Monitor with Discharge Detector Function

(Circulation line pressure): Multi-Monitor with Water Detector Function (G-HIDENS system specification)

Identificatio

n number

Contents of error

1 Light liquid pressure sensor abnormal

2 Water detection pressure sensor abnormal

Fig. 5-24

：：：：


5.6.3 Factory settings

No Setting items Selection range of

settingMM-1 MM-2 MM-3

1 Power switch ON / OFF OFF OFF OFF

2 LM alarm output switch ON / OFF OFF OFF OFF

3 DD alarm output switch ON / OFF ― OFF OFF

4 Water Detection output switch ON / OFF ― ― OFF

5 Kinds of oil FO / LO FO FO FO

6 SELFJECTOR-G model

10G,20G,30G,

50G,60G,70G,

100G,120G,150G

10G 10G 10G

7 Gear pump model 10G,20G,30G,

50G,70G,100G10G 10G 10G

8Light liquid pressure

(MPa)0.03～0.30 0.15 0.15 0.15

9LM trigger pressure (△P)(MPa)

0.010～0.050 0.02 0.02 0.02

10Minimum light liquid pressure

(MPa)0.03～0.30 0.12 0.12 0.12

11Delay timer

(sec)5～120 40 40 40

12Hold timer

(sec)5～120 15 15 15

13 Partial discharge detection function ON / OFF ― OFF OFF

14 Frequency 50Hz / 60Hz 60Hz 60Hz 60Hz

15WD trigger pressure (△W)(MPa)

0.010～0.10 ― ― 0.05

16Minimum WD pressure

(MPa)0.010～0.10 ― ― 0.03

NOTE

Shown above are shop-set default values.

At test operation, it is necessary to adjust the settings according to the specification/model of

SELFJECTOR.

For set values, refer to "Multi-Monitor" in the Operation Manual 2.

SAMGONG-MITSUBISHI

SELFJECTOR

GENIUS SERIES

INSTRUCTION MANUAL

(OPERATION MANUAL 1)

Date of Issued : June 2004

SAMGONG CO., LTD.

Operation Manual 1-Samgong

Documents

Transcript of Operation Manual 1-Samgong