Gree LSQWF65M/N-M Service Manual
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Gree LSQWF65M/N-M Service Manual

Gree LSQWF65M/N-M Service Manual

Air cooled scroll chiller
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Air Cooled Scroll Chiller
Service Manual
（T1/R407C/50Hz）
GREE ELECTRIC APPLIANCES INC. OF ZHUHAI

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Summary of Contents for Gree LSQWF65M/N-M

  • Page 1 Air Cooled Scroll Chiller Service Manual （T1/R407C/50Hz） GREE ELECTRIC APPLIANCES INC. OF ZHUHAI...

  • Page 2: Table Of Contents

    CONTENTS PRODUCT............................2 1 MODELS LIST ........................2 2 NOMENCLATURE ......................2 3 FUNCTION ..........................3 4 PRODUCT DATA ........................4 4.1 Product Data at Rated Condition.................4 4.2 Operation Range......................5 4.3 Electric Data........................5 5 PIPING DIAGRAM ......................6 5.1 Cooling Only.......................6 5.2 Heat Pump........................7 CONTROL ............................9 1 OPERATION FLOWCHART ....................9 1.1 Cooling Operation.......................9 1.2 Heating Operation .....................10...
  • Page 3 1 TROUBLE TABLE ......................32 2 FLOW CHART OF TROUBLESHOOTING ..............33 4 EXPLODED VIEWS AND PART LIST ................46...
  • Page 4 GREE COMMERCIAL AIR CONDITIONER AIR COOLED SCROLL CHILLER PRODUCT...

  • Page 5: Product

    AIR COOLED SCROLL CHILLER PRODUCT PRODUCT 1 MODELS LIST Capacity Power Model Name Ref. Appearance （kW/Ton） Supply Cooling Heating LSQWF65M/N-M 60/17 65/19 LSQWRF65M/N-M LSQWF80M/N-M 76/22 80/23 400V- LSQWRF80M/N-M R407C 50Hz LSQWF130M/N-M 120/34 130/37 LSQWRF130M/N-M Note:1Ton =12000Btu/h = 3.517Kw 2 NOMENCLATURE －...

  • Page 6: Function

    We proudly publish our sound performance. GREE has provided the latest technology in controlling the chillers. The new controller provides a “user friendly” environment for the operator. The control...

  • Page 7: Product Data

    AIR COOLED SCROLL CHILLER PRODUCT 4 PRODUCT DATA 4.1 Product Data at Rated Condition Cooling LSQWF__M/N-M Only Models Heat LSQWRF__M/N-M Pump Cooling Nominal Capacity Heating Power Cooling 22.6 28.7 45.3 Input Heating 21.7 26.7 43.3 Power Supply 400V-3N-50Hz Microcomputer Auto Control; Running Control Running Status Display;...

  • Page 8: Operation Range

    AIR COOLED SCROLL CHILLER PRODUCT （Heat Pump） Net Weights 1565 （Cooling Only） Operation Weights 1084 1722 （Cooling Only） Notes: ① Nominal capacities are based on the follow conditions: ② Parameter refer to the nameplate; Water side Air side Item Water flow Leaving Water Dry-bull temp.

  • Page 9: Piping Diagram

    AIR COOLED SCROLL CHILLER PRODUCT 5 PIPING DIAGRAM 5.1 Cooling Only...

  • Page 10: Heat Pump

    AIR COOLED SCROLL CHILLER PRODUCT 5.2 Heat Pump...
  • Page 11 GREE COMMERCIAL AIR CONDITIONER AIR COOLED SCROLL CHILLER CONTROL...

  • Page 12: Control

    AIR COOLED SCROLL CHILLER CONTROL CONTROL 1 OPERATION FLOWCHART 1.1 Cooling Operation...

  • Page 13: Heating Operation

    AIR COOLED SCROLL CHILLER CONTROL 1.2 Heating Operation...

  • Page 14: Main Logic

    AIR COOLED SCROLL CHILLER CONTROL 2 MAIN LOGIC 2.1 Cooling Mode In cooling mode, the four way valve is always off as long as the controller is energized and it hasn’t anything to do with the states of compressor and fan. Tout = T_Cout ＋Δ...

  • Page 15: Heating Modeļ¼ˆDefrosting/ Auxiliary Electric Heater(E-Heater)

    AIR COOLED SCROLL CHILLER CONTROL If compressor 1/2 is on, fan A/B will have been on prior to 30s. 2.2 Heating Mode（Defrosting/ Auxiliary Electric Heater(E-heater)） Tout=T_Hout －Δ T × N-T Tout = T_Hout －Δ T × N Tin = T_Hin －Δ T × N-T Tin = T_Hin －Δ...
  • Page 16 AIR COOLED SCROLL CHILLER CONTROL valve is still energized. If the unit is turned off by operating the displayer, the 4-way valve will be de-energized after the compressor is off for 2min. （4）Defrosting control Auto defrosting staring conditions (3 conditions must be met simultaneously) a.

  • Page 17: Antifreezing Protection Control

    AIR COOLED SCROLL CHILLER CONTROL If Tin≥T2, the second group of E-heater stop. If T1＜Tin＜T2, the second group of E-heater keep original state. If Tin ≤T1+1 detected by inlet water temp. sensor, the first group of E-heater run. If Tin≥T2+1, the first group of E-heater stop. If T1+1＜Tin＜T2+1, the first group of E-heater keep original state.
  • Page 18 AIR COOLED SCROLL CHILLER CONTROL 2009-01-01 00:02 Cooling only Cool off 1 Modules Manual Name Function description Power Indicator If the power of the display board is on, Power Indicator will be light, or else it is off. （Green） Run Indicator If the display board is started, Run Indicator will be lighted, （Green）, or else it won’t.

  • Page 19: Display View

    AIR COOLED SCROLL CHILLER CONTROL 3.3 Display View 2009-01-01 00:02 Cooling only Cool off 1 Modules Manual Display type Content description Date Display the current data Unit name Display the name of the unit Run state Display the current state of the unit, such as running or off On/off mode Display the mode of the unit on or off, such as manual or timer...

  • Page 20: Menu Structure Of Controller

    AIR COOLED SCROLL CHILLER CONTROL 3.4 Menu Structure of Controller...

  • Page 21: Sketch Map Of Dip Switch

    AIR COOLED SCROLL CHILLER CONTROL 3.5 Sketch map of DIP switch Address DIP switches setting is shown as below (Address DIP switch1, 2 and 3 are to set the main module and sub-module) Main module Sub-module 1 Sub-module 2 Sub-module 3 Sub-module 4 Sub-module 5 Sub-module 6...
  • Page 22 GREE COMMERCIAL AIR CONDITIONER AIR COOLED SCROLL CHILLER INSTALLATION...

  • Page 23: Installation

    AIR COOLED SCROLL CHILLER INSTALLATION INSTALLATION 1 BEFORE INSTALLATION 1) Please check the attached documents of unit and accessories according to package list. 2) Check the model and specification according to attached documents. 3) Check the unit for damage and accessories. 4) Check the charge refrigerant for leakage.
  • Page 24 AIR COOLED SCROLL CHILLER INSTALLATION >2000 >2000 >3000...

  • Page 25: Dimension Data

    AIR COOLED SCROLL CHILLER INSTALLATION 5 DIMENSION DATA Water Inlet Water Outlet Unit:mm Model 2110 1100 2140 1300 LSQW(R)F65M/N-M 2110 1100 2140 1300 LSQW(R)F80M/N-M 2410 1900 2240 1560 LSQW(R)F130M/N-M 6 INSTALLATION CLEARANCE DATA...

  • Page 26: Typical Water Piping Diagram

    AIR COOLED SCROLL CHILLER INSTALLATION 7 TYPICAL WATER PIPING DIAGRAM...

  • Page 27: Antifreeze

    AIR COOLED SCROLL CHILLER INSTALLATION 8 ANTIFREEZE The units can operate with a leaving chilled fluid temperature from of 42℉ to 60℉(5℃～16℃).A glycol solution is required when leaving chilled fluid temperature is below 4.5℃. The use of glycol will reduce the performance of the unit depending on concentration. % by Weight Freezing Point℃（℉）...
  • Page 28 AIR COOLED SCROLL CHILLER INSTALLATION Reliable earthing must be ensured. 3）Control Connection Wire Control leading wire at site should be 1mm at least. The signal connected with water flow switch is 12V D.C light-current signal, so never wire it together with the leading wire at 50V or above in parallel. If unavoidable, the distance between heavy current and light current signals must be kept 150mm or above.

  • Page 29: Electric Wiring Design

    AIR COOLED SCROLL CHILLER INSTALLATION 9.2 Electric Wiring Design...
  • Page 30 AIR COOLED SCROLL CHILLER INSTALLATION Note： 1) use the 4 cores communication wires to connect each modules between X2,X3.use a 2 cores （2×1mm ） signal wires to connect the terminal 34,35 between each modules. Refer to the diagram shown above. 2) use a 2 cores（2×1mm2）...

  • Page 31: Wiring Diagram

    AIR COOLED SCROLL CHILLER INSTALLATION 9.3 WIRING DIAGRAM LSQW(R)F65M/N-M...
  • Page 32 AIR COOLED SCROLL CHILLER INSTALLATION LSQW(R)F80M/N-M...
  • Page 33 AIR COOLED SCROLL CHILLER INSTALLATION LSQW(R)F130M/N-M Note:This wiring diagram is just for your information, and please refers to the diagram stuck to the unit during the actual wiring.
  • Page 34 GREE COMMERCIAL AIR CONDITIONERS AIR COOLED SCROLL CHILLER MAINTENANCE...

  • Page 35: Maintenance

    AIR COOLED SCROLL CHILLER MAINTENANCE MAINTENANCE 1 TROUBLE TABLE Error Description Signal Source Control Logic Display High pressure switch acts when high pressure High pressure High pressure reaches 3.0MPa.If both of the compressors are off, Hi pressure protection of switch of the fan will delay to stop.
  • Page 36 AIR COOLED SCROLL CHILLER MAINTENANCE Defrost Defrosting temp. temp. In case of open circuit or short circuit of defrosting sensor 1 protection sensor 1 Defrosting temp. temp. sensor, error code will be displayed and all sensor loads will be stopped. The unit will resume Defrost Defrosting temp.
  • Page 37 AIR COOLED SCROLL CHILLER MAINTENANCE 2）Low pressure protection...
  • Page 38 AIR COOLED SCROLL CHILLER MAINTENANCE 3）Compressor Overload Protection...
  • Page 39 AIR COOLED SCROLL CHILLER MAINTENANCE 4）Internal Protection of Compressor 5）High Noise of Compressor...
  • Page 40 AIR COOLED SCROLL CHILLER MAINTENANCE 6）Water flow switch protection...
  • Page 41 AIR COOLED SCROLL CHILLER MAINTENANCE Removal and Installation of Compressor Remark: Before removing the compressor, make sure that there is no refrigerant inside the pipe system and that the power has been cut off. Step Illustration Handling Instruction 1.Remove the Use screwdriver to loosen the power cord screws fixing the power cable.
  • Page 42 AIR COOLED SCROLL CHILLER MAINTENANCE 4.Remove the Do not damage the rubber compressor, blanket when removing the and fix a new compressor; compressor to In case of intake of moisture, chassis. the compressor orifice should be sealed. Place the nwe compressor on the rubber blanket on which steel bushing is put.
  • Page 43 AIR COOLED SCROLL CHILLER MAINTENANCE Disassembly and Assembly of 4-way valve Remarks: Before removing the 4-way valve, cut off the power and reclaim the refrigerant; Step Illustration Handling Instruction Record Record the direction of direction 4-way valve before 4-way valve before removing it.
  • Page 44 AIR COOLED SCROLL CHILLER MAINTENANCE Removal and Installation of Gas-Liquid Separator and Accumulator Remarks: reclaim the refrigerant. Prepare related equipment and tools and ensure the good ventilation of the working environment. Step Illustration Handling Instruction Remove Remove gas-liquid separator connecting pipe and connecting pipe by heating with of the accumulator.
  • Page 45 AIR COOLED SCROLL CHILLER MAINTENANCE Removal and Installation of Shell and Tube Exchanger Remarks: when inspect the water system and confirm that the shell and tube exchanger is damaged and needs to be replaced, cut off the power of the unit and reclaim the refrigerant. Step Illustration Handling Instruction...
  • Page 46 AIR COOLED SCROLL CHILLER MAINTENANCE Removal and Inatllation of Condenser Remark: Cut off power the unit and reclaim refrigerant. Step Illustration Handling Instruction 1.Remove the front Reclaim refrigerant panel indicated by completely arrow (take Cut off power of the unit. replacement Remove fan sub-assy and condenser...
  • Page 47 AIR COOLED SCROLL CHILLER MAINTENANCE Removal and Installation of Thermal Expansion Valve Remark: Check the various wirings of refrigerant system. If replacement of expansion valve is confirmed, cut off power of the unit to reclaim refrigerant. Step Illustration Handling Instruction Reclaim Cut off power of the unit.
  • Page 48 AIR COOLED SCROLL CHILLER MAINTENANCE Removal and Inatallation of Filter Remark: Check the various wirings of refrigerant system. If replacement of expansion valve is confirmed, cut off power of the unit to reclaim refrigerant. Step Illustration Handling Instruction Reclaim Cut off power of refrigerant.
  • Page 49 AIR COOLED SCROLL CHILLER MAINTENANCE 4 EXPLODED VIEWS AND PART LIST 1) Model: LSQWF65M/N-M、LSQWF80M/N-M Exploded Views...
  • Page 50 AIR COOLED SCROLL CHILLER MAINTENANCE LSQWF65M/N-M Parts List Name of part Part code Quantity Pressure Protect Switch 46020003 Thermal Expansion Valve '07130368 Gas-liquid Separator '07228003 Bidirection Strainer 07210044 Pressure Protect Switch 460200044 Compressor Gasket '02118049 Compressor and fittings '00201108 Electric heater(compressor)
  • Page 51 AIR COOLED SCROLL CHILLER MAINTENANCE LSQWF80M/N-M Parts List Name of part Part code Quantity Pressure Protect Switch '46020003 Thermal Expansion Valve '07130354 Gas-liquid Separator '07228012 Bidirection Strainer '07210044 Pressure Protect Switch '460200044 Compressor Gasket '02118049 Compressor and fittings '00201109 Electric heater(compressor) '765152121 Evaporator Assy '010080131...
  • Page 52 AIR COOLED SCROLL CHILLER MAINTENANCE Model: LSQWRF65M/N-M、LSQWRF80M/N-M Exploded Views...
  • Page 53 AIR COOLED SCROLL CHILLER MAINTENANCE LSQWRF65M/N-M Parts List： Name of part Part code Quantity Compressor Gasket '02118049 Electric heater(compressor) '76515211 Thermal Expansion Valve '07331103 Thermal Expansion Valve '07130368 One way Valve 07130111 Bidirection Strainer '07210044 Magnet Coil '430004009 Sensor sub-assy '39001107 4-way Valve '430004061...
  • Page 54 AIR COOLED SCROLL CHILLER MAINTENANCE Transformer '4311024001 Main Board '30222603 Electric Cabinet Assy '01391115 LSQWRF80M/N-M Parts List： Name of part Part code Quantity Compressor Gasket '02118049 Electric heater(compressor) '76515212 Thermal Expansion Valve '07130327 Thermal Expansion Valve '07130354 One way Valve '07138042 Bidirection Strainer '07210044...
  • Page 55 AIR COOLED SCROLL CHILLER MAINTENANCE AC Contactor '4401023501 Single-phase Air Switch '45020203 Phase Reverse Protector '46020054 Transformer '4311024001 Main Board '30222603 Electric Cabinet Assy '01391114 3) Model: LSQWF130M/N-M Exploded Views...
  • Page 56 AIR COOLED SCROLL CHILLER MAINTENANCE Parts List： Name of part Part code Quantity Gas Tube Filter 07219051 Pressure Protect Switch（high） 46020003 Pressure Protect Switch（low） 460200044 Dry Evaporator '01039985 Sensor sub-assy '39001104 Compressor and fittings 00108144 Compressor and fittings 00108144 electrical heater '76518731 Compressor Gasket '02118049...
  • Page 57 AIR COOLED SCROLL CHILLER MAINTENANCE Electric Cabinet Sub-Assy '01391150 4) Model: LSQWRF130M/N-M Exploded Views...
  • Page 58 AIR COOLED SCROLL CHILLER MAINTENANCE Parts List： Name of part Part code Quantity Thermal Expansion Valve '07130343 Magnet Coil '43040008 Gas-liquid Separator '07421110 Compressor and fittings '00201107 Dry Evaporator '01039985 Pressure Protect Switch '460200044 Compressor Gasket '02118049 Electric heater(compressor) '76515404 Pressure Protect Switch '46020007 4-way Valve...

This manual is also suitable for:

Lsqwrf65m/n-mLsqwf80m/n-mLsqwrf80m/n-mLsqwf130m/n-mLsqwrf130m/n-m

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