Hydraulic module technical manual 50Hz +201104 · 2011-06-08 · Content Unit HM25/II-28FN...

Midea Commercial Air Conditioner

Hydraulic Module

For Air-cooled Modular Chiller 50Hz

2011.04

HEAT PUMP TYPE 380-415V, 50Hz, 3N For High Ambient Temperature Use

MCAC-ATSM-2011-04 Hydraulic Module 50Hz

1

Content

1 Introduction..........................................................................................................2

2 Feature ...................................................................................................................2

3 External appearance ..........................................................................................3

4 Nomenclature ......................................................................................................3

5 Product list ...........................................................................................................4

6 Application range ...............................................................................................4

7 Specification ........................................................................................................5

8 Dimension .............................................................................................................6

9 Wiring Diagram....................................................................................................8

10 Internal structure ............................................................................................10

11 System diagram ..............................................................................................11

12 Selection ...........................................................................................................12

13 Standard configure.........................................................................................13

14 Trouble shooting.............................................................................................14

15 Installation ........................................................................................................17

16 Hydraulic module system application.......................................................23

Hydraulic Module 50Hz MCAC-ATSM-2011-04

2

1 Introduction

The series hydraulic module is designed for air-cooled modular chiller unit, it has two pumps, one of them is backup. The water

pump can be automatic switching under failure (malfunction shifting). It is the use of the hydraulic system module integration

solutions, is a completely prefabricated sets strict monitoring of products, with a pump, valve, automatic replenishment, safety

components, bypass components, drain dirty sewage and control system, etc. For water cycle, constant pressure to supply water

for all water media transportation, for industrial, commercial and residential buildings, it is the best choice for water distribution

systems.

Capacity range:

Applies to air-cooled modular chiller from 25Kw to 1040Kw.

2 Feature

2.1 Backup function

Two pumps built-in, one of them is backup. It can be automatically switched between two pumps in failure.

2.2 High-class main components

For main components, dustproof and waterproof designed, they have tested at 100 over 1000 hours. For the pipe, adopts ℃

brass, stainless steel or metal with special coating and anti-rust treatment.

2.3 Good performance

Max flow of Single Pump: 200m3/h, water pumper runs more quietly and more

efficiently.

2.4 Easy installation and maintenance

The unit can be installed indoor and outdoor, suit for different customer’s

requirement. There are screw connecting and flange connecting, convenient

for connecting.

2.5 Save the installation space and cost.

Integrated design, covering area is too less. Intelligent control, it saves energy

more than 30% than traditional.

For air-cooled modular chiller, it’s no need of expansion tank.

2.6 Convenient operating, humanization design.

The electric control cabinet can be separated from the unit to install, more

convenient operating for user without nearby the unit.

2.7 Fixed pressure replenishing water valve

Indoor

Outdoor


3

It consists of reducing valve, stainless steel filter, stop valve and check valve. The automatic replenishment valve consists

reduced pressure and stable pressure device, the pressure value can be automatically adjusted and kept, which according to

pressure gauge and the replenishment valve scale, when the system pressure is low, it will be automatically opened to filling

water, automatically close when the pressure up to setting value, avoid to damage system device cause of high pressure.

Maximum pressure of inlet water：10 bar

The pressure adjustment range：0.5～4 bar

Setting pressure in plant：1.5 bar

2.8 More safety

The motor safety class is IP54, insulation class is F.

3 External appearance

4 Nomenclature

H M 120 / II- 33 F N

Pump brand N: Nan Fang pump

Special machine for air-cooled modular chiller

Rated head (m)

Double pump system

Rated water flow volume (m3/h)

Hydraulic module


4

5 Product list

Model Water flow(m3/h) Head(m) Cooling capacity(kw) Power supply

HM03/II-29FN 3 25 5～15

HM05/II-31FN 5 24 16～25

HM07/II-30FN 7 22 26～35

HM10/II-29FN 10 26 36～45

HM14/II-28FN 14 25 46～65

HM18/II-26FN 18 24 66～88

HM25/II-28FN 25 28 81～115

HM35/II-30FN 35 24 116～160

HM40/II-28FN 40 28 161～240

HM50/II-32FN 50 25 241～300

HM60/II-30FN 60 29 301～360

HM80/II-25FN 80 25 370～460

HM100/II-27FN 100 27 460～580

HM120/II-33FN 120 33 580～690

HM140/II-25FN 140 25 700～810

HM160/II-33FN 160 33 810～930

HM200/II-25FN 200 25 940～1160

380V/3N/50Hz

6 Application range

Content Running range

Running media Water, Glycol(30% of the maximum solubility)

Media temp. -15˚C～85˚C

Ambient temp. -15˚C～52˚C

Working pressure 6bar

Safety valve return pressure 0.4Mpa

Power supply 380V/3N/50Hz

Voltage tolerance Rating Voltage±10%

Phase tolerance ±2％

Power supply frequency Rating frequency±2%

Height above sea level 1000m


5

7 Specification

Content Unit HM03/II-29FN HM05/II-31FN HM07/II-30FN HM10/II-29FN HM14/II-28FN HM18/II-26FN

Recommended

cooling capacity

corresponding to the

range selection

KW 5~15 16~25 26~35 36~45 46~65 66~88

Water flow m3/h 3 5 7 10 14 18

Pump Head m 25 24 22 26 25 24

Water pressure loss KPa 6 8 13 11 16 12

mm DN32 DN40 DN40 DN50 DN50 DN65 Pipe diameter (inlet &

outlet) inch 1-1/4” 1-1/2” 1-1/2” 2” 2” 2-1/2”

Power supply type V/N/Hz 380/3/50，with heat protection, Phase sequence protection and power supply protection

Unit rated input power KW 0.8 1.15 1.2 2.25 2.3 3.1

Dimensions (L*W*H) mm 787*620*1020 1130*792*1160

Net weight kg 142 150 155 164 170 221

Area ㎡ 0.49 ㎡ 0.49 ㎡ 0.49 ㎡ 0.49 ㎡ 0.49 ㎡ 1.04 ㎡

Content Unit HM25/II-28FN HM35/II-30FN HM40/II-28FN HM50/II-32FN HM60/II-30FN

Recommended cooling

capacity corresponding

to the range selection

KW 81~115 116~160 161~240 241~300 301~360

Water flow m3/h 25 35 40 50 60

Pump Head m 28 24 28 25 29

Water pressure loss KPa 12 18 11 16 17

mm DN80 DN80 DN100 DN100 DN100 Pipe diameter (inlet &

outlet) inch 3” 3” 4” 4” 4”


t rated input power KW 4.1 4.2 5.6 5.7 7.6

Dimensions (L*W*H) mm 1130*792*1160 1300*900*1250

Net weight kg 229 233 304 306 317

Area ㎡ 1.04 ㎡ 1.46 ㎡


6

Content Unit HM80/1I-25FN HM100/II-27FN HM120/II-33FN HM140/II-25FN HM60/II-33FN HM200/II-25FN

Recommended

cooling capacity

corresponding to

the range selection

KW 370~460 460~580 580~690 700~810 810~930 940~1160

Water flow m3/h 80 100 120 140 160 200

Pump Head m 25 27 33 25 33 25

Water pressure

loss KPa 22 22 18 20 25 26

mm DN125 DN125 DN150 DN150 DN200 DN200 Pipe diameter

(inlet & outlet) inch 5” 5” 6” 6” 8” 8”


Unit rated input

power KW 10.5 11 14 16 22 22

Dimensions

(L*W*H) mm 1700*1150*1500 1800*1150*1500 2300*1150*1700 2500*1200*1700

Net weight kg 570 575 605 610

Area ㎡ 1.96 2.07 2.65 2.65 3 3

8 Dimension

Note: R1: Water inlet R3: Replenishment water inlet R2: Water outlet R4: Pressure bypass joint inlet


7

Unit: mm L1 L2 H1 H2 H3 H4 R1 R2 R3 R4 Net

weightModel

mm mm mm mm mm mm DN DN DN DN kg

HM03/II-29FN 787 620 1020 960 630 256 32 32 15 20 142

HM05/II-31FN 787 620 1020 960 630 256 40 40 15 20 150

HM07/II-30FN 787 620 1020 960 630 256 40 40 15 20 155

HM10/II-29FN 787 620 1020 960 630 256 50 50 15 20 164

HM14/II-28FN 787 620 1020 960 630 305 50 50 15 25 170

HM18/II-26FN 1130 792 1160 1100 655 305 65 65 15 25 221

HM25/II-28FN 1130 792 1160 1100 655 305 80 80 15 25 229

HM35/II-30FN 1130 792 1160 1100 655 305 80 80 / 25 233

HM40/II-28FN 1300 900 1250 1190 655 305 100 100 / 40 304

HM50/II-32FN 1300 900 1250 1190 655 305 100 100 / 40 306

HM60/II-30FN 1300 900 1250 1190 700 377 100 100 / 40 317

HM80/II-25FN 1700 1150 1500 1440 700 377 125 125 / 40 570

HM100/II-27FN 1800 1150 1500 1440 793 377 125 125 / 40 570

HM120/II-33FN 2300 1150 1700 1440 793 377 150 150 / 65 575

HM140/II-25FN 2300 1150 1700 1440 820 405 150 150 / 65 605

HM160/II-33FN 2500 1200 1700 1640 820 405 200 200 / 65 610

HM200/II-25FN 2500 1200 1700 1640 820 405 200 200 / 65 610

Unit: inch L1 L2 H1 H2 H3 H4 R1 R2 R3 R4 Net weight

Model inch inch inch inch inch inch inch inch inch inch kg

HM03/II-29FN 30.98 24.41 40.16 37.80 24.80 10.08 32 1-1/4” 1/2” 3/4" 142

HM05/II-31FN 30.98 24.41 40.16 37.80 24.80 10.08 1-1/2” 1-1/2” 1/2” 3/4" 150

HM07/II-30FN 30.98 24.41 40.16 37.80 24.80 10.08 1-1/2” 1-1/2” 1/2” 3/4" 155

HM10/II-29FN 30.98 24.41 40.16 37.80 24.80 10.08 2” 2” 1/2” 3/4" 164

HM14/II-28FN 30.98 24.41 40.16 37.80 24.80 12.01 2” 2” 1/2” 1" 170

HM18/II-26FN 44.49 31.18 45.67 43.31 25.79 12.01 2-1/2” 2-1/2” 1/2” 1" 221

HM25/II-28FN 44.49 31.18 45.67 43.31 25.79 12.01 3" 3" 1/2” 1" 229

HM35/II-30FN 44.49 31.18 45.67 43.31 25.79 12.01 3" 3" / 1" 233

HM40/II-28FN 51.18 35.43 49.21 46.85 25.79 12.01 4" 4" / 1-1/2” 304

HM50/II-32FN 51.18 35.43 49.21 46.85 25.79 12.01 4" 4" / 1-1/2” 306

HM60/II-30FN 51.18 35.43 49.21 46.85 27.56 14.84 4" 4" / 1-1/2” 317

HM80/II-25FN 66.93 45.28 59.06 56.69 27.56 14.84 5" 5" / 1-1/2” 570

HM100/II-27FN 70.87 45.28 59.06 56.69 31.22 14.84 5" 5" / 1-1/2” 570

HM120/II-33FN 90.55 45.28 66.93 56.69 31.22 14.84 6" 6" / 2-1/2” 575

HM140/II-25FN 90.55 45.28 66.93 56.69 32.28 15.94 6" 6" / 2-1/2” 605

HM160/II-33FN 90.55 47.24 66.93 64.57 32.28 15.94 8" 8" / 2-1/2” 610

HM200/II-25FN 90.55 47.24 66.93 64.57 32.28 15.94 8" 8" / 2-1/2” 610


8

No. Name No. Name 1 Pressure gauge(three) 6 Drainage outlet 1

2 Lock 7 Drainage outlet 2

3 Exhausting air fan outlet 8 Pressure bypass valve

4 Water outlet 9 Water inlet

5 Power wire joint 10 Fixed pressure replenishing water inlet

9 Wiring Diagram

9.1 Electric connecting schematic diagram .

10

2 4 5

6 7 8 9

1 3 3

Pump 1

Pump 2

Fan motor 1

Fan motor 2

AC 220V(backup)

Hydraulic

module

control

cabinet

Water flow switch

Water temperature sensor

Main power supply

Pump linkage signal

Water flow switch signal

Main unit control module


9

9.2 Wiring Diagram


10

10 Internal structure

No. Name Quantity

1 Safety valve 1

2 Vertical stop valve 1

3 Electric bypass pressure valve

1

4 Pump 2

5 Pressure gauge and thermometer

3

6 Horizontal stop valve 2

7 Expansion tank 1

8 Electric box 1

Electric control

No Name Type Quantity No Name Type Quantity

1 PLC control board 1 use,1 backup 1 7 Breaker DZ47-63 4P D20A 1

2 Wired terminal RT-2.5 26 8 Breaker DZ47-63 1P C10A 2

3 Heating relay LRD 2 9 Fuse RT28-32 Gg4A 1

4 Assistant terminal of contactor 1 open,1 close 2 10 Phase relay XJ3-D 1

5 Contactor CJX2 AC220V 2 11 Relay HH52P 2

6 Breaker DZ47-4P/D20A 1 12 Power supply AC220V/DC24V 1

1

2

3 4 5

6

7

8

9

1011 12


11

11 System diagram

This series of hydraulic module is designed to project the system with a preparation of the pump settings to consider, select the unit of power systems and control systems.


12

12 Selection

To confirm the hydraulic module, must be according to:

1. Air-cooled modular chiller capacity.

2. Designed water volume.

3. Pump head.

Power supply: 380V/3N/50Hz

Recommend combination for air-cooled modular chiller unit Hydraulic model

Water

flow(m3/h) Head(m)

Cooling

capacity

(KW) (25)30kw (60)65kw (120)130kw (180)200kw

HM03/II-29FN 3 25 5～15 / / / /

HM05/II-31FN 5 24 16～25 / / / /

HM07/II-30FN 7 22 26～35 30KW×1 / / /

HM10/II-29FN 10 26 36～45 / / / /

HM14/II-28FN 14 25 46～65 30kw×2 65KW×1 / /

HM18/II-26FN 18 24 66～88 / / / /

HM25/II-28FN 25 28 81～115 30kw×3 / / /

30kw×4 HM35/II-30FN 35 24 116～160

30kw×5 / 130KW×1 /

30kw×6 65kw×2 HM40/II-28FN 40 28 161～240

30kw×7 65kw×3 / 200KW×1

30kw×8

30kw×9 HM50/II-32FN 50 25 241～300

30kw×10

65kw×4 130kw×2 /

HM60/II-30FN 60 29 301～360 30kw×11 65kw×5 / /

30kw×12

30kw×13 65kw×6

30kw×14 HM80/II-25FN 80 25 370～460

30kw×15 65kw×7

130kw×3 200kw×2

HM100/II-27FN 100 27 460～580 30kw×16 65kw×8 130kw×4 /

65kw×9 HM120/II-33FN 120 33 580～690 /

65kw×10 130kw×5 200kw×3

65kw×11 HM140/II-25FN 140 25 700～810 /

65kw×12 130kw×6 200kw×4

65kw×13 HM160/II-33FN 160 33 810～930 /

65kw×14 130kw×7 /

65kw×15 HM200/II-25FN 200 25 940～1160 /

65kw×16 130kw×8 200kw×5

Note: 1. The hydraulic module is special matching to air-cooled modular chiller. 2. Please make sure how many water system is need, each water system match the outdoor unit combined

quantity and type. 3. Each water system design of maximum head shall not exceed 5% of the data in specification table. 4. Each water system design of maximum water flow volume shall not exceed the above-mentioned data.


13

13 Standard configure

Name Quantity

(pcs) Function Remark

JB-5002 stop

subassembly

2 (Same as

pump quantity). Prevent water flow back.

This item must be confirmed in ordering, the

basic model has not reserved the

installation position.

KQ-044 filter

subassembly

2 (Same as

pump quantity).

Integrates filtering and draining pollution,

convenient for using.

This item must be confirmed in ordering, the

basic model has not reserved the

installation position.

HM-E-C electric

control system 1

Lake phase protection, over heating protection,

over voltage/low voltage protection, phase

sequence protection, motor reversal protection,

motor overload protection, motor cooling

protection. Can be linked any manufacturer

master unit’s active signal, source free signal

which all can connect the linkage control,

manual/automatic (linkage) operating function.

Reserving 220V power output interface.

If the master unit has electric control

system, it is unnecessary. The basic unit

has reserved installation position. Can be

installed on site.

TS-5503 fixed

pressure

replenishment valve

1 Constant pressure to supply water. No need for over HM35.This item must be

confirmed in ordering, the basic model has

not reserved the installation position.

KQ-13 pressure

bypass valve 1 Water flow protection.

Recommending use. The basic unit has

reserved installation position. Can be

installed on site.

SB series stainless

steel quick

connection hose

4 (Pump

quantity×2)

Efficiently decrease the working time,

convenient for installation in narrow space.

One side with flexible joint, another side with

outer screw.


14

14 Trouble shooting

Name Phenomenon Possible reasons Solutions

Phase sequence

failure

XJ3-G type（One light）：The light

is red or off.

XJ3-D type（Three lights）：The

light will be on if phase failure or

break.

① Phase sequence

failure.

② Lake phase.

① Exchange two wires of them.

② Check whether the circuit is

loose, please connect it again if yes.

Over/low voltage

protection

Power supply is normal, pump

didn’t start, the light for over/low

voltage is on.

The voltage is unstable.

The protection function will be

automatically remove after voltage

return to normal.

The pump

overloading

protection

The power supply is normal,

linkage and manual didn’t start

pump.

The pump overloading

protection.

After cut off power supply, replace

the heating relay (press blue

button), restart power supply.

Active interlock

connect to the

passive interlock by

mistake

① The pump didn’t run.

② The fuse is broken, the

pump runs.

③ The fuse is broken, the

pump didn’t run.

Linkage wire connecting is

wrong.

Replace hydraulic module and

components of main unit, confirm

the linkage signal type (tested by

multimeter) to connect rightly.）

Passive interlock

connect to the

active interlock by

mistake

The pump didn’t run. Linkage wire connecting is

wrong.

To make good connecting after

confirm the linkage signal type.

Contactor abnormal

noise.

Contactor makes abnormal

noise after close.

① The contactor inside

entered dirty or quality

problem.

② The coil voltage is low.

③ Bad contacting for

circuit.

① Replace contactor.

② Check the voltage is normal or

not.

③ Wiring again to good

connecting.

The contactor

repeated action. The contactor repeated on or off.

① The linkage wire is not

tight.

② Open circuit or

components error cause of

transportation.

Quickly stop machine!

①wiring again to good connecting.

②Check circuit, exchange failure

components.

The contactor is

broken.

Power supply and circuit are

normal, can’t start it by linkage

and manual, the coil voltage is

normal.

Cut off power supply, press

on contactor by hand, the

contactor is broken if don’t

press down.

Replace contactor.

Relay failure.

Normally start pump by manual,

active start-up failure,

corresponding light is not on.

Relay failure. Replace relay.


15


Water flow failure The main unit alarm frequently

for water flow failure.

① The system lack water.

② The water flow switch

runs not sensitively.

③ The water flow switch

selection wrong.

④ Air in system.

① Check the replenishment

pressure is normal or not.

② Testing whether water flow

switch can run normally.

③ Reset the switch type of main

unit flow or exchange flow switch.

④ Exhaust enough.

Pump with large

noise

The pump makes large noise in

running.

① Pump reversal.

② Dirty in system or pump

lock running.

③ Return water pressure

is low.

④ Air in system.

⑤ Return air inlet bad

seal.

① Correctly adjudge the running

direction of pump by pressure gauge

and adjusting.

② Clean Y type filter,(The Y type

filter must be installed, otherwise

the dirty enter into pump so that the

pump is broken, must be clean it

after the first time running )

③ Check whether the

replenishment water system is

normal.

④ Correctly install exhausting

valve (make it on the top point of

system), exhaust enough.

⑤ Check whether the joint has

smaller hole in pipeline, and fully

seal.

Leakage protection

The hydraulic module installs

leaking protection switch on

power supply inlet, start up

hydraulic module, leakage

protection switch:

① Immediate tripping.

② Tripping after a period of

running.

① Used 3P leakage

protection switch

② Only firewire from main

unit, neutral and hydraulic

module are sharing.

③ The leakage node exist

in circuit.

① Replaced 4P leakage

protection switch.

② Linkage line neutral connect

main unit neutral.

③ Eliminate leakage failure

node.

Probe of pressure

gauge water

percolating

The probe of pressure gauge

drops water after a period of

using.

① The probe is loose

cause of vibration.

② The rubber gasket will

be aged cause of high

ambient temperature.

① Fix it tightly again (Notice: not

too tight, or else the rubber gasket

is broken by pressing).

② Replace rubber gasket.

Probe of

thermometer is

loose.

The indicating and actual

temperature values deviate

greatly.

Probe of thermometer is

loose, no contact with pipe

system.

Install it again, good fixture.

The cushion

blocking is broken

by pressing.

The pump is skew, serious

shaking in running.

The cushion blocking is

broken by pressing in

transporting.

Replace cushion blocking.


16


Pressure bypass

failure

Open few fan motors, the flow

failure of main unit often occur.

① The setting pressure of

pressure bypass valve is too

high.

② Haven’t opened the

bypass pipeline.

③ Haven’t turned on the

power supply of electric

pressure bypass.

① Set pressure value again.

② Open the bypass pipeline.

③ Turn on the power switch of

electric pressure bypass valve.

Safety valve failure The safety valve leak water

continually.

① The system pressure is

too high.

② The safety valve is

broken during testing

pressure.

① Check the local water supply

pressure, please add the fixed

pressure and replenishment valve if

the pressure is too high.

② Replace safety valve (Prohibit

testing pressure with safety valve, if

want to test pressure, please

remove safety valve and stop them

by stopple.)


17

15 Installation

1. Dimension selection of pipe

Model Unit Water

inlet/outlet Stop valve Filter

Pressure

bypass

Fixed pressure

replenishment valve

mm DN32 DN32 DN32 DN20 DN15 HM03/II-29FN

Inch 1-1/4” 1-1/4” 1-1/4” 3/4” 1/2”


Inch 1-1/2” 1-1/2” 1-1/2” 3/4” 1/2”


Inch 1-1/2” 1-1/2” 1-1/2” 3/4” 1/2”


Inch 2” 2” 2” 3/4” 1/2”


Inch 2” 2” 2” 1” 1/2”


Inch 2-1/2” 2-1/2” 2-1/2” 1” 1/2”


Inch 3” 3” 3” 1” 1/2”

mm DN80 DN80 DN80 DN25 HM35/II-30FN

Inch 3” 3” 3” 1” /


Inch 4” 4” 4” 1-1/2” /


Inch 4” 4” 4” 1-1/2” /


Inch 4” 4” 4” 1-1/2” /


Inch 5” 5” 5” 1-1/2” /


Inch 5” 5” 5” 1-1/2” /


Inch 6” 6” 6” 2-1/2” /


Inch 6” 6” 6” 2-1/2” /


Inch 8” 8” 8” 2-1/2” /


Inch 8” 8” 8” 2-1/2” /


18

2. Installation introduction and key points:

(1) Project operating instruction:

○1 .Position：

It can be laid out flexibly in the basement, roof, garage and outdoor machine room, covering an area down to 0.37 m2. Do not

take up the user indoor area. It can also be placed in the open air. It has unique waterproof casing design, which is specially

designed for the layout of outdoor equipment group.

○2 .Foundation：

Hydraulic module has own foundation.

Placement requirements：The ground must be flat and have a slope of 0.5%; around the ground all around the foundation should

be well-drained, and shall not have seeper in case of water accumulation is too deeper to affect the units. Please ensure that

circulation performance of the filtering device is good, well-drained and no water accumulated. The load bearing of ground should

be designed according to the calculation of conventional additional load; Without special demand，please provide the hydraulic

module and each type weight.

The table contains the dimension of installation.

Unit: mm

Model HM03 HM05 HM07 HM10 HM14 HM18 HM25 HM35 HM40 HM50 HM60A 620 620 620 620 620 792 792 792 850 850 850

B 787 787 787 787 787 1057 1057 1057 1200 1200 1200

C 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000


19

Unit: mm

Model HM80 HM100 HM120 HM140 HM160 HM200A 1700 1800 2300 2300 2500 2500

B 1150 1150 1150 1150 1200 1200

C 1500 1500 1700 1700 1700 1700

○3 .Hoisting emplacement：

If set on rooftop，hydraulic module will set a supporting point at the bottom，which can undertake hoisting carrying capability. If set

indoor, it only needs to configure a trailer, drag it to indoor location specified. Please provide sizes and weights of each type of

hydraulic module, convenient to hoist and make a hole in place. Please keep the body in good packaging before installation.

Please take care of handling, guarantee the body which is vertical and have a slope less than 15 °. Please avoid hitting other

objects when installing, and put it placidly to avoid sliding.

○4 .Pipe installation:

Provide pipe installation schematic drawing, and the name of connection orifice should be shown at the position of waterpower

module orifice, convenient to connect system pipeline. Less than HM80 modules, please obligate threaded interface, HM80 and

above module obligate flange interface.

○5 .Damping and flexible connection:

Hydraulic module has own dual damping device. When being positioned and installed, no module considers damping. Hydraulic

module and the pipeline system for hose connection, metal flexible duct for less than HM80 module will be provided by factory,

the length can be customized, convenient to be connected. For HM80 and above module, the flexible joints was configured inside

hydraulic module in factory, there is no consideration when installing.

○6 .Pressure testing:

Manufactured products has a strict strength and leak testing before leaving factory; The proposal testing pressure does not

exceed 0.8 MPa. After finished installation, will be tested for system and fully pipeline together, please take down the safety valve

（4bar）inside module and close the system by stopple. Please reinstall safety valve back after pressure testing.

○7 . Trial run:

Electric principle diagram will be provided, there are observation failure indicators in the electric control cabinets, understand

module and system operating conditions by visual observation. Please clean well the pipeline, and before trial run, turn on the

drainage valve for filtering component of the module and check pipeline cleaning status.

○8 . Acceptance:

Make sure the linkage with the main unit device is normal, confirm the action of flow switch, confirm the operation status of pump,

confirm the visual value on the hydraulic module dial is normal or not, and confirm whether the phase sequence protection,

water-lacking protection, overload protection and other functions are normal.

3. Special attention:

(1). Pay more attention to protect the units which is safe, as can as keep moving and placing smoothly, confirm equipment is not

damaged.

(2). Electric mounting must be done with the supervision of qualified electrician. Electrical installation and wiring must meet the


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relevant standards.

(3). The power wire of units and signal wire must be separated ，it cannot parallel to the wiring, otherwise it will not make the units

working normal.

(4). When installation and using process, should beware of electric shock.

4. Transfer and installation site

(1).Please sure the reliability of hoisting equipment before transfer. Do not use shabby hoisting equipment.

(2) Please determine the correct transfer route before transfer. Try to reduce transfer times and transfer the fully machine unit to

prevent the external structure damaged in transfer.

(3) Please do not tear down the packing of the hydraulic modular before arriving installation position. Be careful not to scratch the

units if it must be dismantled. Lifting should be done as the packing direction and added two guard plates, in case of damage or

deformation.

(4) When suspension machine to moving, please use the flexible sling in order to protect the unit from damage and scratch.

(5) Please carry the products together with external package in consider of protection. If it has to be opened, please use

protecting templates or cardboard to protect units.

(6) For safety, please move slowly when using chain pulleys to lift and transfer.

(7) Please do not touch such objects as the wall, column, door, lamps and so on to avoid damage to the machine.

(8) When moving on the ground, please use roller to doing traction assignments, and ensure that there is at least four rollers to

work together.

(9). While units are in handling or moving, please try to remain horizontal and never tilt the product above 15o.

(10).The unit can be installed on the rooftop, the balcony or outside the yard .It should be noticed whether the bearing surface is

sufficient strength to withstand the weight when the unit operates. The field intensity must be strong enough, not easy to cause

resonance and noise.

(11).The unit should not be installed in the occasion filled with dust, pollutants, corrosive gas and humidity.

(12). In the occasion for unit installations, enough space must be kept for cooling and convenient to installation and maintenance

person to pass through.

(13).Keep the ambient temperature surrounding the units between 0 ~ 40℃, never more than RH75 %. Please keep sufficient

ventilation and less dust.

5. Power supply of unit distribution

(1). The power supply of the unit must be connected (switching-on) strictly on the basis of electric requirements. Please do not

sharing a power lines with other appliances.

(2). Please ensure that the unit is reliably grounded, prevent leakage accidents when installing.

(3). Operating power supply

Allow ◆ voltage range: rated voltage ±10%

Allow frequency range◆ ：Rated frequency ±2%

Allow three◆ -phase voltage unbalance：±2%


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Allow three current imbalance: ◆ ± 5%

(4). Power supply of unit distribution (the distribution of the unit) must be connected strictly on the basis of Hydraulic module

circuit diagram (seen in distribution box cover opposite) in order to ensure proper operation.

User connecting: L1, L2, L3, N, all of others are wired in plant (Please refer to the wiring diagram on page 9).

(5). Electric parameter of the unit nameplates is the quantitative value under standard running conditions. The selection of

miniature circuit breaker, AC contactor, wiring capacity and so on has been considered while the machine is operating under the

harsh conditions.

(6). System control consists of electric control cabinet, temperature sensor, flow switch and so on.

(7). Control box can realize linkage and connected controlling through active contact, passive contact and any kind of central

air-conditioner main unit. What’s more, it can control the operation of corresponding pump and fan by receiving operating signal.

(8). According to (on the basic of) the different selection of the customers, various types of product in the control cabinet are

provided to meet the demand of customers. For example, the type with simple and dual pump with frequency conversion control

system, the type with fix frequency control system and remote communication control system and so on.

.6 Starting- up the first time

(1)Preparation

○1 Check the status of all valves.

○2 Check whether the water are full.

○3 Check all wiring is correct.

(2). Starting-up and checking

◆ Switch on general power supply.

Check whether the units' phase sequence is correct.◆

Attention!

Frequently start-up would impact the lifespan of unit. Strongly recommend: When the units started up, do not frequently start or

stop the units. Do not dump directly if it's out of necessary.


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7. Commissioning

(1). Check whether the unit is well earthed.

(2). Check whether the air-conditioning and earth source recycle system are filled with water, whether the pipeline is emptied, the

replenishing water valve is on or not.

(3). Check whether all valves of pipeline are on correct status.

(4). Check whether the voltage of power supply is correct.

(5). Check whether the main pressure gauge is normal.

(6). Check whether the terminal equipment operate normally.

(7). Start up the water pump and confirm its running direction firstly. Check whether the water flow switch is normal. Check the

replenishing water source and turn on the exhausting valve to empty air in pipeline.

(8). After finished checking water pump and water system, start to the running testing. Before starting the unit, please check

whether the power supply is normal. After that, please record the temperature and pressure from all points pipeline. 8. Safety.

(1). If find the phenomenon as below, please quickly stop the machine, cut off power supply, check it and repaired.

A. The motor’s current is more than rated current 10% or more for a long time.

B. The unit stops running automatically and can't restore automatically by itself.

C. Can ‘t start up the units or difficultly.

(2).When the unit is in plant, different labels are pasted on the related position, please strictly comply the rules

(3). Prohibit operating all switches frequently.

(4). Don’t cut off main unit’s power supply in running time.

9. Maintenance

(1). The units have been tested strictly in plant and are in the best working condition. Please do not adjust it again.

(2). After trial running 24 hours, need to be cleaned the filter at inlet of the pump.

(3). Prohibit operating all switches frequently.

(4). Must be cut off power supply if do not use the machine for a long time.

(5). Special attentions in winter: When the ambient temp. is less than 0 ,℃ please check the heating preservation regularity, do not

cut off power supply. When no use long time in the winter, please empty the system pipeline to prevent the pipe chilled.

(6). The unit should be operated and maintained by specified person. Please stop it quickly if abnormal thing was found, find out

the reason and remove malfunction. Prohibit the machine running with trouble.

(7) Should you meet the question you can not do, please contact our after sales service.


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16 Hydraulic module system application

Symbol Name Symbol Name

A1 Unit side of the shut-off valve(Optional) E Associated-control input(Optional)

B1 User side of the shut-off valve(Optional) F Telecommunication input(Optional)

C Replenishment shut-off valve(Optional) G1&G2 Anti-shocking plug hose(Optional)

D Power supply 220/380V AC 50Hz

Cooling tower

Cooling side Ground source

Water source

Note: The data in this book may be changed without notice for further improvement on quality and performance

The International Division Midea Air Conditioning and Refrigeration Sector Add: Midea headquarter building, No.6 Midea Avenue, Beijiao Town, Shunde District, Foshan City, Guangdong, P.R. China Postal code: 528311 Tel：+86-757-26338346 Fax: +86-757-26339337 http://www.midea.com http://www.mideaaircon.com

GD Midea Refrigeration Equipment Co., Ltd.

Have received ISO 9001 certification for

quality assurance.

Certificate Registration

NO.01 100 019209

GD Midea Refrigeration Equipment Co., Ltd.

Have received environmental management

system

Standard ISO 14001 certification

Certificate NO.CC 1417

MCAC-ATSM-2011-04

Hydraulic module technical manual 50Hz +201104 · 2011-06-08 · Content Unit HM25/II-28FN...

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Transcript of Hydraulic module technical manual 50Hz +201104 · 2011-06-08 · Content Unit HM25/II-28FN...