2014.05.08 GNJBQ Agitator Manual

7/25/2019 2014.05.08 GNJBQ Agitator Manual

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www.gnsolidscontrol.com

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User Manual

GNJBQ Mud Agitator

Hebei GN Solids Control Co.,Ltd


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Hebei GN Solids Control Co., Ltd (FORMERLY KNOWN AS TANGSHAN GUANNENG

MACHINERY EQUIPMENT CO., LTD). (Brand Name: GN Solids Control)Is a China API & ISO

Certified manufacturer specializing in complete line equipment & shaker screens for:

OIL&GAS Drilling----Solids Control Equipment

HDD&CBM Drilling----Mud Recycling System

Oilfield&Industrial--Drilling Waste Management

GN Solids Control is one of the most famous International Brand for Mud Solids Control & Drilling

Waste Management.

GN is the First API certified solids control equipment manufacturer in China.

GN Facilities total area is over 70,000 which is close to Beijing.

GN Products have been exported to 60 countries and regions.

GN Owns a specialized facility for making shaker screens in Asian largest wire mesh center

city.

GN Owns 10 patents for the design of Solids Control Equipment.

Up to March,2013, GN is the only China based API Certified manufacturer who provide

Vertical Cutting Dryer for drilling waste management.

Complete Line Equipments

GN System:Design & manufacture complete line equipment for a total mud system which

ensures better integration of system and competitive price.

GN Solids Control Equipments:Shale Shaker, Mud Cleaner ,Desander ,Desilter, Centrifuge,

Agitator, Mixing Hoppers, Flare Igniter, Various Tanks, Pumps, Degassers etc.

GN Drilling Waste Management:Vertical Cutting Dryer,HI-G Dryer Shaker, Decanter

Centrifuge,Screw Pumps etc

GN Main Spare Parts: Shaker Screens, Hydrocyclone Cones, Rig Mat


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Read Before Use


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CONTENTS

Complete Line Equipments ................................................................................................................ 2

Section 1-Overview ................................................................................................................................... 6

1.1 Operation Instructions .................................................................................................................. 61.2 Application ................................................................................................................................... 7

1.3 Features ........................................................................................................................................ 8

1.4 Main parameters of agitator ......................................................................................................... 8

1.5 Usage of mud agitator .................................................................................................................. 8

Section 2- Structure And Operation Principle ........................................................................................... 9

2.1 Drive Motor ............................................................................................................................... 11

2.2 Gear Drive .................................................................................................................................. 11

2.3 Impeller ...................................................................................................................................... 11

2.4 Main parts list for different agitator models .............................................................................. 12

Section 3- Model selection and Installation ............................................................................................. 14

3.1 Model selection .......................................................................................................................... 14

3.2 Operation Attentions .................................................................................................................. 14

3.3 Installation ................................................................................................................................. 15

3.4 Gearbox lubricant level .............................................................................................................. 19

3.5 Electrical connections ................................................................................................................ 20

3.6 Storage & handling .................................................................................................................... 21

Section 4- Machine start up & shutdown ................................................................................................. 22

4.1 Initial startup .............................................................................................................................. 22

4.2 Normal startup and operation ..................................................................................................... 224.3 Normal shutdown procedure ...................................................................................................... 23

4.4 Emergency shutdown ................................................................................................................. 23

Section 5- Maintenance............................................................................................................................ 24

5.1 Routine maintenance .................................................................................................................. 24

5.2 Gearbox lubrication ................................................................................................................... 24

Section 6- Troubleshooting & Solution ................................................................................................... 26

Section 7- Terms of warranty .................................................................................................................. 28

Section 8- Installation and maintenance log ............................................................................................ 30


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Section 1-Overview

This manual provides installation, operation, and maintenance instructions for GN mud

agitators. The manual is divided into several parts to assist the user inreadily accessing the

information.

Personnel responsible for transporting, installing, commissioning, operating, or performing

maintenance on this equipment are required to read and understand the instructions

provided in this manual. One copy of this manual should be available and accessible at the

equipment location.

For machine safety and performance, no additions and/or changes may be made to the

equipment without the explicit written permission of GN Solids Control. Genuine GN

repair/replacement parts are required

Fig. 1: GN agitator

1.1 Operation Instructions

All persons responsible for operation and maintenance of this equipment must read and


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understand all safety information in this manual prior to operating and/or maintaining the

equipment. The safety warnings listed below are included in applicable procedures

throughout this manual.

a.Read operation manual before operating

b.Confirm the oil level in the oil window middle position before starting up.

c. To ensure proper balance and orientation when unit is raised and prevent damage to

components, attach lifting sling only between motor and gear drive. Do not attempt Lifting

by attachment to eyebolt on motor or any other Location.

d. Lift specified lifting points to move devices! Ensure that equipment installation

fastening, reliable; Fasten all assembly bolt group once a month.

Replace lubricates in the gear box every 1000 hours, Brand of lubricating grease:

Mobil:150#.; replace grease in the motor every 2500 hours, Brand of lubricating grease:

Mobil:EP2.

e. Clarify the correct direction of agitator before usage.

f. To avoid serious personal injury of un-expected motor startup, be sure equipment is

locked out, tagged out, and de-energized prior to install / or maintenance and/oradjustments.

DO NOToperate the equipment if defective or faulty mechanical or electrical components

are detected.

1.2 Application

GN JBQ series mud agitator is one of the important equipment for mud system. It is

mainly used for agitating drilling fluids, avoid particle in fluids deposit to tank bottom.

GN does not authorize any other use of this equipment, intended usage of the equipment

includes compliance with the operating, maintenance, and safety instructions provided in

this manual


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1.3 Features

GN JBQ series mud agitator has below features:

a. Utilize worm gear reducer. Compact design, perfect joggle and reliable operation.

b. Worm gear reducer combined with explosion-proof motor, which enable stable

performance in wild severe environment.

c. Input shaft of explosion-proof motor are connected to gearbox with elastic coupling

directly, rather than belt-drive. It enables stable speed of impeller.

d. The mud agitators are high-efficiency mud-mixing units offered in a wide array of

custom sizes, and configurations to accommodate virtually any mud tank. It is to avoid

over-load of current during start up motor.

e. Horizontal type of motor. It is convenient for installation, adjustment or replacement.

1.4 Main parameters of agitator

ModelMotor power

kw

Impeller

speedrpm

Impeller dia.

mm

Impeller

Qty

Ration Ex MarksWeight

(kg)

GNJBQ030A 3

60/72

50Hz/

60Hz

650 1

25:1

EXdllBt4/

IECEX/

A-TEX

100

GNJBQ055A 6.5 850 1 250

GNJBQ075A7.5

950 1 356

GNJBQ075A-D 800 2 378

GNJBQ110A11

1050 1 479

GNJBQ110A-D 850 2 494

GNJBQ150A15

1100 1 684

GNJBQ150A-D 960 2 702

GNJBQ185A-D 18.5 1050 2 750

GNJBQ220A-D 22 1100 2 780

1.5 Usage of mud agitator

It is high-efficiency mud-mixing units offered in a wide array of custom sizes and

configurations to accommodate virtually any mud tank. The horizontal drive is designed


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for installations having limited space above the mud tank.

The mud agitator stirs mud slurry to maintain suspension of solids. The agitator is mounted

on top of the mud tank and has one or two impeller(s) immersed in the mud slurry. The

impeller shaft is coupled to an electric drive motor with coupling. iT is available in several

horsepower ratings from 7.5hp to 20hp (5.5kw ~ 15kw).

Normally, below 11kw agitator, single impeller usually be matched. Above 11kw, double

impeller better. Details design should be based on the users request and jobsite condition.

The impeller is fixed to the shaft with bolts to avoid rotating or sway (connection with key

groove optional). Its vertical location on the shaft is determined as a height from the tank

bottom corresponding to the impeller diameter times 0.75. For example, a 20 impeller

should be mounted 15 above the bottom. GN recommends straight impeller blades for

tanks under 5 deep and canted blades for deeper tanks. If dual impellers are desired,

straight blades are mounted on the bottom and the canted blade impeller is installed at a

point about two-thirds above the tank bottom.

The keyed motor and driven impeller shafts are rigidly connected by a multi-piece

coupling, which uses tapered locking bushings to secure the shafts together. Shaft lengthsare customized to suit customer specifications. For shafts longer than 8, a stabilizer is

mounted on the tank bottom to support the lower end of the shaft.

Section 2- Structure And Operation Principle

GN mud agitator is made of explosion-proof motor, worm gear reducer. impeller,


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mounting plate, elastic coupling, and rigid coupling. Explosion-proof motor and worm gear

reducer installed on mounting plate. Elastic coupling connect explosion-proof motor input

shaft and gearbox input shaft. Impeller shaft and gearbox output shaft are connected by

rigid coupling.

Although the arrangement mud agitator components is identical across the various sizes

and configurations, the drive motor, impeller, shaft length and diameter, gear drive, and

motor orientation vary between models. Figure 2 shows the typical components of a mud

agitator. The configuration for the same power rating is identical, except for the type of ear

drive. The unit is shipped unassembled and requires assembly by a trained, qualified

technician.

Fig. 2: Main components of GN mud agitator

S/C Part No. Description Qty

7 M20X80botls assembly 4

6

Motor & worm gear reducer

component 1


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5 M14X140 Impeller installation bolt 2

4 Stabilizer 1

3 ImpellerSingle or double

Layers1-2

2 M14X70 Shaft installation bolt 61 Agitator shaft 1

2.1 Drive Motor

The mud agitator is operated by a 3-phase induction motor. Drive motors range from 7.5 to

20 horsepower with customized hz and voltage; the power requirements are specified on

the customer order. Electric power, switching, and safety devices are provided by the

customer.

GN can offer starter for agitator as request. All components come from Siemens of

Schneider.

2.2 Gear Drive

Rotation of the drive motor is transferred to the impeller shaft through the directly coupled

gear drive. The drive is a reduction gearbox and is factory assembled to the drive motor.

The drive is sized to apply the maximum torque required to produce the design impeller

rotation speed of 60 rpm under 50hz, and 72 rpm under 60hz.

2.3 Impeller

Impellers are available in diameters ranging from 650mm to 1100mm to meet the needs of

various size mud tanks. The impeller diameter is generally determined by the size of the

tank. Larger or deeper tanks employ dual impeller units having a secondary impeller

mounted closer to the mud surface. The impeller is mounted on the shaft using a tapered

locking bushing. A bolt / key inserted in the impeller shaft locks the impeller to the shaft

and prevents rotation. Canted impeller blades are desirable near the bottom of tanks more

than 1500mm (5) deep or where other forces of flow factor may be absent in the tank.


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Fig.3: Canted Impeller

2.4 Main parts list for different agitator models

S/C Model Main parts Part No. Specs Qty

1GNJBQ03

0A

Motor & Gearbox Assembly GNJBQ030-01 Subassembly 1

Shaft GNJBQ055-02 Welding Assembly 1

Stablilizer GNJBQ055-03 SUS316 1

Impeller GNHJYL65-00 ZG35# 1

2GNJBQ05

5A





3GNJBQ07

5A




Impeller GNZZYL95-00 ZG35# 1

4

GNJBQ07

5A-D


Shaft GNJBQ075D-02 Welding Assembly 1



5GNJBQ11

0A





6GNJBQ11

0A-D




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7GNJBQ15

0A





8GNJBQ15

0A-D





9GNJBQ18

5A-D

Motor & Gearbox Assembly GNJBQ185-01 Subassembly 1Shaft GNJBQ150D-02 Welding Assembly 1



10GNJBQ22

0A-D





11Interchang

eable parts

Shaft linking boltsGB/T 5783

M1470SUS316 6

Impeller fasten bolts GB/T 41 M14 SUS316 2

Impeller fasten spring washer GB/T 93 14 SUS316 8

Impeller fasten boltsGB/T 5783

M14140SUS316 8


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Section 3- Model selection and Installation

Before installation / disassembly, read and understand all safety information presented in

this manual and associated documents. Review the equipment handling procedures in the

manual. Pay particular attention to information concerning lift points and the use of

spreader bars before lifting or moving the equipment.

Failure to observe proper equipment handling procedures may result in serious personal

injury and/or damage to the equipment.

3.1 Model selection

For proper mixing and suspension of solids, the mud agitator must be properly sized and

installed. To properly size a mud agitator, proceed as follows:

1). Select desired style horizontal type

2). Determine available electric power - 440V/460V/380, 60HZ , 380V/400V/415V, 50HZ

or customized.

3). Select horsepower and impeller(s) as determined by the following factors:

a. Tank design - round or square

b. Tank dimensions

c. Maximum mud weight

d. Desired turnover ratio (TOR)

After gathering the required information, the agitator can be properly sized to meet the

horsepower demand and correct agitation for the application. To ensure accurate sizing,

GN recommends clients to communicate with GN people to make sure size and model.

3.2 Operation Attentions

Following are operational recommendations for mud agitators:

1. Maintain uniform tank dimensions, i.e. equal width-to-length ratio or as close as

possible to equal.


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2. Avoid TOR values greater than 85 seconds, as this may jeopardize solids suspension.

3. Avoid TOR values less than 40 seconds, as this may result in formation of a vortex and

increase air entrapment.

3.3 Installation

Following are the sequential steps of the mud agitator installation procedure. The sequence

presented is a guideline and may vary depending on the users facilities, previous

experience with this equipment, and optional equipment.

1. Read and understand all safety information & handling procedures in this manual, and

identify the mud agitator components.

2. Locate and weld mounting plate and stabilizer (if required) to tank structure.

3. Place shaft in tank, and assemble impeller(s), tapered bushings, and male coupling on

shaft.

4. Install female coupling on gearbox shaft.

5. Install motor and gearbox assembly, and attach shaft coupling to gearbox coupling.

6. Connect electric power supply to drive motor.

Leveling

To prevent undue premature wear on the gearbox or coupling and ensure long-term

reliability and efficiency of the mud agitator, the impeller shaft should rotate in a true

vertical orientation, with concentricity


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Fig. 4: Agitator mounting dimension

Agitator mounting dimension as showed as following.

Motor Power

No.

3kw 5.5kw 7.5kw 11kw 15kw 18.5kw 22kw

A 909 1072 1157 1296.5 1474 1509 1529

B 527 588 607 692 747 753 753

C 789 935 1005 1125 1330 1330 1529

D 525 610 682 755 890 890 890

E 723 859 929 1049 1244 1244 1244

F 313 358 458 528 678 678 678

G 24 24 24 24 24 24 24

H 33 38 38 38 42 43 43

M

L

Section A-A


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Gearbox mounting plate

The mounting location must be determined before the gearbox is installed. When selecting

the mounting plate location, ensure that sufficient clearance is provided between theimpeller blades and the tank wall. Use a level to ensure absolute, horizontal orientation of

the mounting plate in two perpendicular directions. Select shims as needed to achieve level

mounting, mark the position of shims, and then remove the plate from the tank as it must

be placed onto the gearbox shaft before installing the female coupling.

If impeller shaft is more than 8 long, a stabilizer is required to support the lower end of

the shaft.

Install the stabilizer as follows:

1. Drop a plumb line through the center of the mounting plate to locate the exact center

position of the stabilizer on the tank floor.

2. After determining its proper location, weld the stabilizer to tank floor.

Shaft assembly

Following installation of the stabilizer (if needed), place the shaft in the tank and assemble

as follows:

Hoist the shaft vertically, and carefully lower into the tank while maintaining suitable

support to permit assembly of impeller(s) and male coupling. While assemble shaft and

impeller, rigid coupling should assembled with spring waster and flat washer, and then

tighten, otherwise, it may cause runout of impeller shaft, and speed up the abrasion of

gearbox and bearing.

Impeller assembly

Install impeller with shaft, fixed with M14x140 bolt (2 bolts for each set of impeller)

The impeller mounting location is kept by GN before delivery.

For a canted single impeller or a dual impeller shaft, GN sets the distance of the lower

impeller from the tank floor at 75 percent of the impeller diameter. Mount the optional


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second impeller at a distance above the tank floor that is equal to 2/3 of the tanks

maximum mud height. For example, if the tank mud depth is 10, the second (upper)

impeller key should be centered approximately 6.5 above the bottom of the tank. For tank

depths of 6 or less, install a single straight impeller not more than 12 above the tank

floor.

Motor and gearbox assembly and installation

GN Solids control Co., Ltd. will install motor and gearbox before delivery. Clients can

installation or disassembly as request. For details, please refer motor/gearbox user

manual.

Gearbox and impeller coupling connection

1. Position and align shafts so that couplings are brought together, and fully mate couplings

on shaft and gearbox

2. Check for a gap at any location around the coupling flanges. A gap indicates angular

misalignment. Difficulty in mating the shafts indicates parallel misalignment. Alignmentshould be checked with a dial indicator before bolting flanges together.

3. After aligning couplings, insert and tighten hex head screws (supplied with male

coupling) to the recommended torque. Tighten in stages, using an alternating pattern until

final torque is reached. Re-check torque after completing tightening sequence.


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Fig. 5: Coupling assembly

3.4 Gearbox lubricant level

Verify that lubricant level in the gearbox reaches the bottom of the oil level plug. Refer to

below Figure for location of oil level plug.


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Fig. 6: Gearbox Plug Locations

3.5 Electrical connections

WARNING! TO AVOID SERIOUS PERSONAL INJURY BE SURE

EQUIPMENT IS LOCKED OUT, TAGGED OUT, AND

DE-ENERGIZED PRIOR TO PERFORMING MAINTENANCE

AND/OR ADJUSTMENTS.

WARNING! MOTOR MUST BE OPERATED AT THE DESIGNATED

SUPPLY VOLTAGE.

WARNING! HIGH VOLTAGE MAY BE PRESENT. BE SURE FUSED

DISCONNECT SUPPLYING ELECTRICAL POWER TO THIS

EQUIPMENT IS OPEN. LOCK-OUT AND TAG-OUT POWER

SUPPLY TO PREVENT ACCIDENTAL APPLICATION OF POWER

WHILE MAINTENANCE AND/OR ADJUSTMENTS ARE IN

PROGRESS.

WARNING! ELECTRICAL CONNECTIONS MUST BE MADE IN

ACCORDANCE WITH THE NATIONAL ELECTRICAL CODE (NEC)

AND ALL APPLICABLE LOCAL CODES. FAILURE TO COMPLY

MAY RESULT IN AN UNSAFE CONDITION THAT COULD INJURE

PERSONNEL OR DAMAGE EQUIPMENT.

ENSURE THAT ALL ELECTRICAL AND CONDUIT

CONNECTIONS ARE SECURE.

Before making power connections, be sure that electrical source meets one of the following

standards:

1. AC power at rated frequency is within 10 percent of rated voltage, or

2. AC power at rated voltage is within 5 percent of rated frequency, or

Levelplug

Ventplug

Drainplug


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3. Combined variation in voltage and frequency is 10 percent of rated values, provided

the frequency variation does not exceed 5 percent of rated frequency.

Refer to drive manufacturers literature in Section 10 for additional assistance in making

electrical connections.

3.6 Storage & handling

If the machine will not be installed immediately, it should be covered with a tarpaulin

(tarp). If unit is stored outdoors, use a UV- resistant tarp, or UV-resistant shrink-wrap.

Install vents when using shrink-wrap. Seal operating and maintenance manual in plastic,

and attach to unit.

GN mud agitators are shipped disassembled except for motor and gearbox, which are

supplied as an assembly. All components including shaft are packaged in a sea/air worthy

wooden case.

The delivered equipment should be transported on the ground using a forklift, lifting lugs

as showed as fig.8.

Fig. 7 Mud agitator lifting lugs


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Section 4- Machine start up & shutdown

This section contains initial and normal startup and shutdown procedures for the mud

agitator. These procedures are designed to ensure safe operation and shutdown of the

equipment.

4.1 Initial startup

The Initial Startup procedure is to be used when the equipment is being started for the first

time, or when equipment is returned to use after an extended period out of service. The

initial startup is performed as follows:

1) Verify that all operators and maintenance personnel have read and understand all

operating and safety information.

2) Verify that equipment has been assembled and installed in accordance with part .

3) Check oil level in gearbox (see part ). If low, fill to bottom of level plug.

4) Jog drive motor to check that impeller rotates in the correct direction. If rotation is

incorrect, shut down and lock out and tag out electric power, and reverse any two leads to

switch direction of motor rotation.

5) Start up mud agitator in accordance with the Normal Startup procedure.

4.2 Normal startup and operation

After the initial startup, the mud agitator is started up and operated as follows:

1) Verify that all personnel, tools, documents, and other material are clear of equipment.

2) Turn on the mud agitator, and then open the associated mud feed and outlet systems.

3) Observe the operation of the impeller shaft assembly as the tank fills with mud and

verify continuous rotation of impeller(s).


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Section 5- Maintenance

Routine maintenance is critical to ensure maximum life and trouble-free operation of the

mud agitator. While the recommended maintenance schedule in this section is flexible,

modifications should be based on experience with operating the equipment at your

facilities. A maintenance log should be kept to help establish a routine maintenance

schedule, as well as to monitor and adjust the schedule as necessary throughout the

equipments life. When determining a suitable maintenance schedule, consider duty cycle,

ambient temperature, and operating environment.

WARNING! TO AVOID SERIOUS PERSONAL INJURY, LOCK OUT,

TAG OUT, AND DE-ENERGIZE MACHINE PRIOR TO

PERFORMING MAINTENANCE.

5.1 Routine maintenance

Routine maintenance consists of checking gearbox oil level and oil condition and greasing

gearbox bearings at required intervals.

5.2 Gearbox lubrication

Before operation, lubrate gearbox with L-CKE/P 220~320# worn gear oil (while ambient

temperature around -30~40; or with L-CKE/P 320~460# worn gear oil (while ambient

temperature around 25~65. Verify that lubricant level in the gearbox reaches the bottom

of the oil level plug. Refer to the following tables for oil quantities and approved

lubricants.

Bearings should be cleaned and re-greased on the same schedule as oil changing. After

cleaning, fill bearings to one-third of their free volume.

After 1000 hours of initial startup, clean gearbox inside, add new grease oil. Then

lubricated at every 2500-hour interval.


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Agitator modelGNJBQ

055A

GNJBQ

075A

GNJBQ

110A

GNJBQ

150A

Motor power5.5kw 7.5kw 11kw 15kw

Impeller speed 60/72RPM (50Hz/60Hz)

Worn

gear

grease

oil

Brand

&

model

Ambient temp.

-30 ~ 40

N460 worm gear oil Accordance with

Standard:

SH0094-1991

Ambient temp.

25 ~ 65

N220 worm gear oil

Gearbox oil QtyL 8.6 16.7 16.7 27.2

Lubricated with suitable grease oil as request. Refer following table with some

interchangeable grease oil brand for users to choose at different ambient temperature.

Ambient

temperature

Gearbox lubricating oil manufacturer & model

Sinopec Shell Mobil

-30 ~ 40

L-CKE/P220 Shell Tivela S320 Gear 630XPL-CKE/P320 Shell Tivela S320 Gear 632XP

25 ~ 65 L-CKE/P320 Shell Tivela S320 Gear 632XP

L-CKE/P460 Shell Tivela S460 Gear 634XP

While gearbox or motor temperature over 90C, or vibrate/sound abnormally, shut up

equipment and check immediately.

Fasten all linking bolts periodically.


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Section 6- Troubleshooting & Solution

If mud disturbance in the tank becomes unsatisfactory, check the possibilities listed below

and correct as described.

PROBLEM POSSIBLE CAUSE REMEDY

Over-temperature Motor and gearbox not installed

suitably

Adjust to suitable position,

enable motor and gearbox

axes concentric

Abnormal abrasion of oil seal Trickle lubricating oil at oil

seal ledge

Lubricating oil too much or less Adjust oil quantity baseds on

oil level plug

Lubricating oil not pure, or not

workable well

Replacing with new oil

Too much

vibration and

noise

Motor and gear box not fixed well Check and find out the loosing

point, fasten correctly

worm gear supplementary tooth badly

worn/ damaged

Replacing worm gear

supplementary tooth (connect

GN)

bearing badly worn or disabled Replacing bearing

Linking bolts for coupling and agitator

output plate pull off, or foundation

bolts pull off

Fasten or replacing bolts

Impeller shaft bended or deformed Align the shaft

Impeller local distortion or broken off Repair or replace impeller

Working current

fluctuated greatly

worm / gear in gearbox badly worn Inspection gearbox gradually,

repair or replace relative parts

Far-forth top circle of shaft rubbed with

stabilizer inner wall

Align shaft or re-install

stabilizer

Coupling damaged Replace coupling completely,

or replace elastic sleevepackage

Noise Bearing badly worn or with too bigger

gap

Replace bearing

Worm gear supplementary tooth not

joggled well

Repair booth surface or

replace worm gear

supplementary tooth

Lubricating oil insufficient Add oil accordance with oil

gauge figure

extraneous materials in gearbox Clean out lubricating oil to

empty extraneous materials,


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and add new oil

Oil leakage Oil sealing ledge badly worn Replace oil sealing

Too much lubricating oil Adjust oil quantity accordance

with oil gauge figure

Oil level plug screw not tighten well Tighten or add more sealingadhesive tape

Oil leveler damaged Replace oil a new leveler

Worm gear

supplementary

tooth worn

shortly

Lubricating oil cannot meet standard Replace suitable lubricating

oil

Lubricating oil insufficient Refill lubricating oil

accordance with oil leveler

showed

Lubricating oil is not changed timely,

and become degraded

Replacing lubricating oil

timely as requestover-temperature while operation Treated as over temperature or

reduce ambient temperature


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Section 7- Terms of warranty

All GN equipment sold pursuant to this agreement, guarantee 14 Months after shipment or

12 months after commissioning, whichever comes first. During the guarantee period, GN

will be responsible for problems caused by quality of production or raw material except the

wearing spare parts of the equipment and problems caused by incorrect man-made

operation, providing GN operating, maintenance and inspection recommendations are

followed, and authorized oil filters and lubricants are utilized and replaced at the

recommended intervals.

In the event of improper installation, abuse, misuse, improper operation or improper or

lack of maintenance of GN equipment in accordance with GN recommendation and

accepted industry practice, this Warranty will become null and void with respect to such

GN equipment. During the period of warranty and upon written notification to GN by the

Purchaser, GN guarantees replacement of all parts manufactured by GN shown to be

defective in material and manufacture. GN makes no further warranty, either expressed or

implied, for any amount in excess of the cost of repair or replacement of any part shown tobe defective. The foregoing warranty shall be null and void and of no further force or

effect with respect to any GN equipment on which any repairs or maintenance, other than

normal wear part replacements, are performed by any service provider other than GN or

GN authorized providers.

This Warranty does not cover and GN makes no warranty covering:

a. Failures occurring after expiration of the warranty period.

b. Failure caused by decomposition by chemical action or wear caused by abrasion.

c. Equipment damaged in shipment or by accident.

d. Defects in articles purchased by GN or its affiliates from non-affiliated parties and

resold without alteration, which are covered by warranty from the original manufacturer.

e. Failures due to abuse, misuse, or lack of proper recommended maintenance.

f. Failures of equipment, which has in any way been repaired or altered except as

authorized by GN or equipment using components manufactured or repaired by any other


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party than GN unless expressly authorized by GN.

The foregoing warranty shall be herein referred to as the Agitator Warranty. The

Mud Agitator Warranty is for the exclusive benefit of Purchaser.

THE AGITATOR WARRANTY CONSTITUTES GNS SOLE AND

EXCLUSIVE WARRANTY WITH RESPECT TO ANY AGITATOR PURCHASED

HEREUNDER, EXCEPT FOR THE AGITATOR WARRANTY, GN HEREBY

DISCLAIMS ALL EXPRESS WARRANTIES (WHETHER ORAL, WRITTEN OR

ARISING BY PROMISE, DESCRIPTION OR SAMPLE) AND ALL IMPLIED

WARRANTIES, INCLUDING, WITHOUT LIMITATION, WARRANTIES OF

NON-INFRINGEMENT, ANY WARRANTY OF MERCHANTABILITY AND

FITNESS FOR ANY PARTICULAR PURPOSE, AND ALL WARRANTIES

ARISING BY CUSTOM OR TRADE USAGE.

Purchaser represents that it has evaluated the GN Agitators in light of the Agitator

Warranty and has determined that the GN Agitator are fit and sufficient for Purchasers

operations (including the Processing applications). Purchaser acknowledges that it is solely

responsible for evaluating and choosing the sites where the GN Agitator will be installedand the manner in which GN Agitators will be used.

GN does not warrant that the Environmental Protection Agency (EPA) or any other

regulatory authority has approved or certified the GN Agitators for any purpose.

Purchaser assumes any risk, burden and/or costs of EPA or their regulatory compliance

with respect to any GN Agitator acquired pursuant to this Agreement.

GN has made no inspection of the sites where Purchaser intends to install the Centrifuges

and disclaims any warranties with respect to installation of the GN Agitators. Purchaser

shall use its best efforts to ensure that all persons or entities renting or leasing GN

Agitators are informed of the foregoing exclusive warranty and warranty disclaimer.


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Section 8- Installation and maintenance log

1. Purpose

This section should be used by operating and maintenance personnel to record historical

information gathered during the installation and operation of GN equipment. If properly

kept, the log will be useful for altering maintenance intervals and intercepting trends that

may indicate the need for changing operating procedures. Each entry in the log should be

dated for future reference and tracking. If required, additional pages may be added to the

log by copying a blank page or simply inserting ruled paper at the rear of the section.

2. Installation and Maintenance Record:


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2014.05.08 GNJBQ Agitator Manual

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