d series modular air-cooled scroll chillers service manual
Contents
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4. Automatic exhaust valve Filter EM 5 e Shutoff valve Backup water pump 0 021 4 FILS L i gt lt Nater valve i Auxiliary electric heater Drain pipe Tompa wien Check valve Manual exhaust valve to connect the distribution box Thermometer D Water valve 0 Flexible connection 0 Automatic exhaust valve Filter gt lt Shutoff valve INSTALLATION 20 SK CF Service Manual 7 FREEZE PROTECTION When the flow passage of the shell and tube heat exchanger is frozen up it would cause serious damage to the heat exchanger such as cracking and leakage which are out of warranty therefore the user should take measures stated below for freeze protection Under subzero conditions it is necessary to shut down the chiller installed outdoor and then drain the evaporator completely Failure of the chilled water flow switch and the anti freezing temperature sensor will cause the tube frozen up so the flow switch shall be interlocked with the chiller When charging or recovering the refrigerant the evaporator would crack because of frostbite provided the refrigerant pressure inside the evaporator is under 0 71MPa Therefore be sure to keep the water flow continually inside the evaporator or drain it completely 8 ELECTRIC WIRING WORK 8 1 Wiring Principle All wiring shall co
5. f LIX The diagram is only for reference and the circuit diagram attached on the unit prevails LO N D Series Modular Air cooled Scroll Chillers Service Manual CI 4 LSQWRF160M NaD M
6. Connect the pipeline of the accumulator with the nitrogen tank and adhesive tape can is allowed to be used for the large sized pipeline Purge the system by charging nitrogen 39 MAINTENANCE Service Manual m Tilt the accumulator and then drill a hole 7 Check if close to the bottom and then pour the oil needs to oil inside the accumulator to a prepared be added container Drill a hole close to the bottom 8 Add oil if Charge oil to the accumulator prior to necessary brazing Charge oil here 9 Reconnect the ti i Charge nitrogen when brazing pipe of the Vacuum the system until the pressure accumulator and vacuum goes as low as 1 0bar the system The refrigerant charge and quality shall and then comply with the specification on the nameplate charge refrigerant again MAINTENANCE 40 D Series Modular Air cooled Scroll Chillers Service Manual Shell and tube Heat Exchanger Note Check the water system and be sure the shell and tube heat exchanger shall be replaced And then cut off the power and recover the refrigerant Steps Graphic Representation Instructions 1 Remove Remove four panels around the heat the panel as exchanger and the frame in front of the shown in the blind pl right figure p ug 2 Loosen the pipeline a as Remove the pip
7. 30 31 32 33 3413536 37 38139 0132 coi 0 000886 27 Mainboard mes 0845 0158 N17 ona cng JE 5 2 P 3 4950 51 52 53 54 55 5815 58189608 7172 7474 7578 7178 7980 818 XT2 ps 1 ps 82784 6569 6788 Pipa BRE Q EB LE fle t m ey e7 U 251 282 18 RTI RI2 RT3 RM 0818 RT13 w T ws jun 20K 20K 20K 50K 20K 20K SOK XT3 The Modules are connected as follow Control module 1 Control module 2 Control module 3 Mress DIP switch ares 25 23 125 Manual pane o LEN 245 1234 633 12 34 883 0133 1 The address DIP switch for each control module shall be already set properly See the instruction manual for more details 2 YV2 LPI1 and LP21 are not equipped for the cooling only unit 3 The broken line indicates the wiring by the user COMPONENT POSI ON DIAGRAM H Hae 9 comect the contra module 1234 x The diagram is only for reference and th
8. a 50 Service Manual PRODUCT 1 PRODUCT D Series Modular Air cooled Scroll Chillers Service Manual 1 LINEUP Capacity Product Power Series Model Name Code Supply Refrigerant Appearance Cooling Heating LSQWRF65M NaD M EL01500500 60 17 06 65 18 48 LSQWRF80M NaD M EL01500520 71 20 19 79 5 22 61 ES 5 410 70 SY 8 LSQWRF130M NaD M ELO1500510 120 34 12 130 36 97 x LSQWRF160M NaD M EL01500530 145 41 23 170 48 34 Note 1Ton 12000Btu h 3 517kW 2 NOMENCLATURE LS QW R F 130 Na D 1 2 3 4 5 7 8 Items Options 1 Product type LS chillers 2 Compressor type QW hermetic scroll compressors Default cooling only 3 Function type R heat pump 4 Condenser type F air cooled 65 60kW 17 06 RT 5 Nominal cooling capacit RT 130 120kW 34 12 RT 160 145kW 41 23 RT 6 Structural design M modular design Default R22 7 Refrigerant RA10A 8 Development number 9 Power supply M 380 415V 3Ph 50HZ PRODUCT 2 w gt L 5 m Service Manual 3 FEATURES 3 1 General D series modular air cooled scroll chillers are well developed products incorporated with multiple advanced technologies It features the low noise level compact structure easy operation reliable running and convenient installation and s
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10. p Startup Water Tout XX X C H Water Tin XX X C gt Auxiliary Heat PH Water Tout XX X C __ Auto Antifreeze gt Defrost T1 XX X C c Timer Setup Defrost T2 XXX Clock Setup gt Anti Fre T XX X C c Se FE gt Ambient T XX X C gt Suction T1 XX XC gt Backlight gt Suction T2 XX XC gt Mode zu Exhaust T1 t DARK Mode __ Exhaust T2 XX XC lt ei Memory Start 2 gt Throttle T1 XX X C Module 1 Throttle T2 XX X C gt Module 2 di Fan 1 Module 3 Fan 2 gt Fan 3 z I S gt gt a gt gt m Sys State lt 2 __ T Compressor 1 c gt Compressor 2 A 5 gt CWater Pump lt Module 15 2 gt H Water Pump gt Module 16 gt P Ass Heat 1 Ass Heat 2 U gt User Para Setup 4 Valve 1 3 F gt 4 Valve 2 0 3 8 5 SystemPara Setup 2 gt EXV 2 gt Exthalpy Inc EXV 1 lt s m gt Exthalpy Inc EXV 2 S gt Dis T Sensor 1 5 gt Dis T Sensor 2 P 9 Water Out EXV 9 Water In EXV 3 2 Setup of Toggle Switches on the Motherboard D Series Modular Air cooled Scroll Chillers Service Manual Four bit toggle switches are used for indicating hardware address 1
11. 3 Electric Expand Valve Fitting 4304413213 4 Magnet Coil 4300040049 5 4 Way Valve 43000412 6 Electronic Expansion Valve 07331139 7 Filter 07414118 8 Pressure Protect Switch 4602001570 9 Condenser assy 1 0112110002601 10 Lower Panel 3 01541100082P 11 Lower Panel 4 01541100047P 12 Sensor Sub assy 39008000046G 13 One Way Valve 0733420001 14 Pressure Protect Switch 4602001579 15 Pressure Protect Switch 4602001582 16 Dry Evaporator 01058800064 17 Gas liquid Separator 07421111 18 Pressure Protect Switch 4602001591 19 Pressure Protect Switch 4602001590 20 Steam current Switch 45028209 21 Pressure Protect Switch 4602001583 22 Electrical Heater 76515211 23 Pressure Protect Switch 4602001581 24 Compressor 00201100004 25 Compressor Gasket 02118049 26 Chassis Sub assy 01191100011P 27 pipe connector 06128301 28 Pressure Protect Switch 4602001569 29 Strainer 07210037 30 Lower Panel 01541100067P 31 Pressure Protect Switch 4602001589 32 Electric Expand Valve Fitting 4304413214 33 Magnet Coil 4300040048 34 Handle 26235253 35 Lower Panel 1 01541100053P 36 Side Plate 01311100006P 37 Scram switch 45010024 38 Streamlined Dome 22265801 39 Fan Motor 15701100003 40 Centrifugal Fan 10355801 41 Fan Motor 1570110000301 42 Terminal Board 420111251 43 Electric Cabinet Assy 01391100069 44 Terminal Board 42010254 45 Terminal Board 42010247 46 Terminal Board 42011135 47 AC Contactor 44010229 48 Terminal Board 42018452 49 Main Board 30222000002 50 AC Conta
12. A A LSQWRF65M NaD M 2 29 1 17 6 2 1 71 63 LSQWRF80M NaD M 2 29 3 25 7 2 2 50 80 380 415V 3Ph 50Hz LSQWRF130M NaD M 4 29 1 17 6 4 1 71 125 LSQWRF160M NaD M 4 35 257 4 2 50 160 5 PRODUCT 1 Service Manual m 5 OPERATION PRINCIPLE 5 1 Schematic Diagram Each circuit of the modular chiller is independent and identical and herein only a circuit is taken for an example Defrosting temp sensor gt lt Hi pressrue switch 4 Refrigerant nm port Ambient temp sensor 63 4 Discharge temp sensor Electronic expansion valve 3 Pressure switch COOL Refrigerant charging port gt M C Z Pressrue swtich HEAT ME IM 21914 19 lt Antifreezing temp sensor Entering water temp sensor Leavign water temp sensor Refrigeration Cycle The low pressure superheated refrigerant vapor from the evaporator is drawn into the compressor through which the low pressure vapor is compressed to hi temperature and hi pressure refrigerant vapor Then the refrigerant vapor passes the condenser and turns to saturated or sub cooled refrigerant liquid And then it passes the throttling device and flows into the evaporator where it evaporates by absorbing heat
13. 091 06 2u199 3 091 081 i 4 09 INS EN 1 1 1 i 1 i 1 i 1 1 1 1 i 1 1 1 1 1 i i 1 1 1 1 1 1 1 1 i i 1 1 1 1 i i 22 INSTALLATION 8 3 Specification of Power Cord and Air Switch D Series Modular Air cooled Scroll Chillers Service Manual Min sectional area of the power cable mm Capability of the Model Power Suppl REY Live Line Neutral Line Earth Line Air Switch A LSQWRF65M NaD M 16 4 16 63 LSQWRF80M NaD M 25 4 16 80 380 415V 3Ph 50Hz LSQWRF130M NaD M 50 4 25 125 LSQWRF160M NaD M 70 4 35 160 Notes a The specifications of the minimal size of the neural line should be 4mm that is the selected size of the neutral line should be equal to or larger than 4mm b The specifications of the breaker and power cable listed in the table above are determined based on the maximum power maximum amps of the unit c The specifications of the power cable listed in the table above are applied to the conduit guarded multi wire copper cable like JYV copper cable consisting of PV insulated wires and a PVC cable jacket used at 40 C and resistible to 90 C see IEC60364 5 523 1999 If the working condition changes they should be modified ac
14. 1 compressor 2 exceeds the set point compressor 1 compressor 2 will be shut down immediately but the fan will still run for some time Meanwhile the indicating LED will light on and the error information will be displayed among the error log which must be manually cleared for normal operation of next time 2 9 2 Irrecoverable Protection Compressor 1 2 high pressure or over current protection When it is detected that the high pressure switch of compressor 1 or compressor 2 is open compressor 1 or compressor 2 will be shut down but the fan will still last for some time Meanwhile the indicating LED will light on and the error information will be displayed among the error log which must be manually cleared for normal operation of next time 11 CONTROL D Series Modular Air cooled Scroll Chillers Service Manual Fan 1 2 over current protection When any fan is over current this module unit will be shut down automatically Meanwhile the error information will be displayed among the error log which must be manually cleared for normal operation of next time Flow switch protection When a single module unit detect that the flow switch is closed under normal condition it keeps open it will be shut down automatically When all modules are shut down because of flow switch protection the water pump will stop Communication protection When a single module unit fails to receive any signal from the wired controller i
15. 100 kW 60 71 120 145 Cooling Ton 17 06 20 19 34 12 41 23 Capacity kW 65 79 5 130 170 Heating Ton 18 48 22 61 36 97 48 34 Cooling kW 21 1 25 7 42 3 53 0 Power Input Heating kW 21 0 27 0 44 4 56 0 EER W W 2 84 2 76 2 84 2 74 COP W W 3 09 2 94 2 93 3 04 Power Supply 380 415V 3Ph 50Hz Running Control Microcomputer Auto Control Running Status Display Abnormal Status Alarm Safeties High low pressure protection discharge temp protection motor overload protection anti freeze water flow protection phase sequence protection compressor overload protection Type Constant Speed Scroll Compressor Starting mode Direct starting Quantity 2 2 4 4 Refrigerant Type RA10A Type Dry Expansion Evaporator VVater flovv m h 10 3 12 2 20 6 24 9 volume GPM 45 0 54 0 91 0 110 0 15 20 30 35 Water side Pressure Drop heat ft WG 4 92 6 56 9 84 11 48 Max ki exchanger ax working MPa 4 Pressure water in outlet pipe flange mm DN65 DN65 DN80 DN80 specification Type Aluminum Fin copper Tube Fan type Axial 2 Axial 2 Axial Fan 4 Axial Fan 4 Number of fans Air side heat m h 2 7x10 3 0x10 5 4 10 6 0 10 exchanger Total fan air flow L s 0 75x10 0 83x10 1 5x10 1 67x10 CFM 1 59x10 1 764x104 3 18x10 3 528 10 Total fan kW 0 65x2 0 95x2 0 65x4 0 95x2 motor power Sound pressure level dB A 70 71 72 74 Width mm 2040 2040 2226 2226 Outline Depth mm 1000 1000 1650 1650 Dimension Height mm
16. 16 of modules with module No Module 16 Toggle switches 1 2 3 and 4 are binary code with 1 for the lowest bit and 4 for the highest bit Comparison drawings are as follows Caution The DIP Switch is allowed to be set only when the power supply is cut off and each setting shall be unique displayed in turn on the panel as Module 1 Module 2 Module1 Module2 Module3 Module4 ua 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 5 Module6 Module7 Module8 mua 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 Module9 Module10 Module1 1 Module12 ON ON E LI o gt Ua Module13 Module14 Module15 Module16 Me M TID ON LT H gt ID 15 CONTROL ie OG Service Manual m INSTALLATION INSTALLATION 46 NSTALLATION 1 BEFORE INSTALLATION D Series Modular Air cooled Scroll Chillers Service Manual Please check the attached documents for the unit and accessories in accordance with the packing list Check the model and specification in accordance with attached documents Check the unit and accessories for damage Check the refrigerant charge for leakage Check the cleanliness of the water pipes Do not remove the protective cap of the flange
17. 555 amp 0 2 n on SEI g Deg 86 a O5o69omes 2 ti E P 2 2 5 ESI Sero e gereg 2 5 8 I a X gee 5 29965 5 1 zx 8 ze she 2 o E 5859 E 25 S T is Kama 3 1 5 y s 1 4 8 vet SAN 84 26 s gt L4 d 5 d 202 86 k 2 ger 5 85 82332 Ess amp U E 9 os INSTALLATION 26 Service Manual MAINTENANCE 27 MAINTENANCE D Series Modular Air cooled Scroll Chillers Service Manual MAINTENANCE 1 ERROR LIST Error Rated Element Protection Logic High pressure protection High pressure switch Compressor over current protection Low pressure protection Over current protector Low pressure switch When the pressure is too high or the current exceeds the set point the corresponding compressor will stop and the indicating LED on the controll panel will light on and the error information will be displayed on the error log which must be manually cleared for normal operation of next time When it is detected the low pressure switch of the compressor is opened frequently the compressor will be shut down immediately Meanwhile the error information will be displayed among the error log which must be manually cleared for normal operation of next time High d
18. 7 GREE Change for Life gt gt gt D SERIES MODULAR AIR COOLED lt lt SCROLL CHILLERS SERVICE MANUAL T1 R410A 50Hz GC201307 1 GREE ELECTRIC APPLIANCES INC OF ZHUHAI CONTENTS PRODUC I uu ua eai pecie iL MM 2 TUNEUP ec 2 2 lez e E Xii 2 S FEATURES Pc C EU een 3 T PRODUC T DATA Q L t Pt 4 S lOPERATION PRINCIPLE deis u uu 6 CONTROL 8 1 OPERATION FLOWCHART n 8 2 GONTROL sf 10 CONTROLLER a aa au dass ere oe eer M 12 EIC HE M 17 LBEFORE TSO iu e ee cect ec buen an Pines auum Gases 17 2 INSTALLATION LOCATION ooh quts ate shte adet ede eros i 17 3 CAUTION POR INSTALLATION ndi sitit ate hd da 17 DININ SION ecc 17 S MACHINE FOOTPRINT oroso 19 6 TYPICAL WATER PIPING DIAGRAM 20 7 FREEZE PROTEC MON 21 B ELECTRIC WIRING 21 MAINTENANCE l u u u u 28 LIS eds m 28 2 FLOW CHART OF 29 3 REMOVALS AND REN ST ELTION 34 A ROU BT Nees es ts nce e 48 5 EXPLODED VIEWS AND PART LIST
19. Name L 2 The diagram is only for reference and the circuit diagram attached on the unit prevails INSTALLATION 24 Service Manual D Series Modular Air cooled Scroll Chillers 3 LSQWRF130M NaD M 071905297 Z ueisA anjeA uoisuedxa 5110439913 40 ims sunsseid wo 304 eanssesd no 2141 FUTJES 107 opins oanssoad no Far 1605 sunsseidno ted 20399402 QE 203294010 BULAN puo But 418 VO3IAS 10 1814 ueisKg 4osuos 3s04jap 2 ueis g 110210 UIH 703903009 DV BADEN PISGqureW 705195 pje 5 0214 493en soz Z WISS duaj 101593024 149 14193910 204293019 96040610 295095 azeaisique pje ueisKg pje 10595 duo 7 1 dozen 271 Woas ueg 409 8214 MOS 302 02 308 0614 6113 8118 1148 9113 Zydi 1941 yoz yoz oc 2841 1891 214392 2 1 2 493994 Alquessy p 3 103
20. before connecting water pipes Check installation and operation for compliance with the required range Through the check above if there is any damage or problem please contact the local sales office for help Note that protective measures shall be taken after unpacked product has gone through all check and do not remove the package too early to avoid any unexpected damage to the product 2 INSTALLATION LOCATION In order to guarantee the unit operates normally installation shall be performed by the skilled serviceman with enough knowledge of refrigeration and air conditioning Please read this manual carefully before instillation The unit shall be installed outdoor where there is good ventilation and capable of withstand the weight of the unit Enough space around the unit shall be left for ventilation operation and service No obstacle is allowed above the unit The drainage ditch shall be prepared 3 CAUTION FOR INSTALLATION Ensure the connection pipe and power line both are routed correctly Noise and vibration levels shall be among the reliable range rubber cushion shall be adopted The base must be constructed of cement or steel which can bear the operation weight of the machine and has a level surface The installation location shall be free from fire flammable matters corrosive gas or waste gas Enough ventilation space shall be left and measures should be taken to reduce noise and
21. nitrogen for leakage test Energize the unit and manually close the AC contactor of the compressor to let the compressor run for 2 3 seconds When the compressor runs reversely sharp sound will generates 6 Connect the pipeline and power cord Note after the compressor is replaced most amount of oil will still remain in the system which will not affect the reliability of the newly installed compressor but will increase the running resistance to the rotor and increase electricity consumption Therefore a valve should be installed at the lower part of the inlet of the suction line to discharge excessive oil After installing the valve start the compressor for ten minutes and then open this valve until all oil flows out completely Do it twice to guarantee the oil keeps at the normal level MAINTENANCE 36 E Service Manual A vvay Valve Note sure to cut off the power supply and recover the refrigerant firstly Steps Graphic Representation Instructions ER Remember the installation direction of the 1 Record the 4 way valve before removal installation Remove the coil direction of Wrap the 4 way valve prior to unbrazing the 4 way to prevent it from being damaged and use valve it for future analysis Unbraze the 4 way valve way 2 nin Replace the 4 way valve with the sam
22. sensor fails to recover it should be manually cleared for normal operation of next time Meanwhile the indicating LED on the controll panel will light on and the error information will be displayed on the error log Water flow Switch protection Contactor When a single module detects its flow switch is closed this module will automatically be shut down When all flow switches are closed the water pump will stop Phase loss reversal protection Phase protector When phase loss reversal occurs the phase protector will cut off the power supply to the main board Communication error Main board When the single module fails to receive signals from the controll panel it will automatically be shut off MAINTENANCE 28 2 FLOW CHART OF TROUBLESHOOTING 1 High pressure protection High pressure protection Yes Is the cooling or heating mode set esersely No No Does the electronic expansion valve work normally No No No Is the check valve clogged No Is there air inside the system No unit is turned off No Does the controller raise a wrong alarm No Consult the supplier D Series Modular Air cooled Scroll Chillers Service Manual Does the fan stop or run reversely in the heating mode Is not water pump started or is the water flow insufficient Is the pressure switch broken or Is the
23. terminal connected poorly Is the fin tube heat exchanger too dirty or aged Dose the shell and tube scale heavily Yes Reset the running mode Yes Check the fan or the water pump Yes Replace the coil or even the fan valve Yes Replace the pressure Switch or rewire Clean the heat exchanger Yes Replace the check valve Purge the system and Yes Is the water pipeline arranged irrational Will the flow rate decrease when the termina vacuum the system if necessary Yes Rearrange the water pipeline Yes Replace the main board if this occurs frequently 29 MAINTENANCE D Series Modular Air cooled Scroll Chillers Service Manual 2 Low pressure protection Low pressure protection Yes s the cooling or Yes heating mode set resersely No Does the fan stop or run reversely in the heating mode Is not water pump started or is the water flow insufficient No Does the electronic expansion valve work normally No Is the pressure switch broken or Is the terminal connected poorly No Dose the shell and tube scale heavily No Is the check Yes Yes Reset the running mode Check the fan or the water pump Replace the coil or Is the fin tube heat exchanger too dirty or aged Yes Yes Yes even the fan valve Replace the pressure switch o
24. the refrigeration capability and result in poor lubrication and high discharge temperature etc Note that only refrigerant vapor can be charged into the system at the low pressure side when the unit is in operation However it is highly recommended to charge refrigerant at the hi pressure side when the unit is shut down otherwise it would cause slugging during startup 2 Air Purge Prior to refrigerant charging it is imperative to expel air inside the system and the system must be vacuumed a Connect the manifold gage b Vacuum the system with a vacuum pump c Charge refrigerant at the low pressure side as per the amount specified on the nameplate or product data sheet when the degree of vacuum appro aches the expected range d The refrigerant charge will be affected by the ambient temperature When the charge is under the required amount it is allowed to add refrigerant vapor after starting the water pump and the unit Pipeline 49 MAINTENANCE E _ _ Service Manual m 5 EXPLODED VIEWS AND PART LIST 1 Model LSQWRF65M NaD M MAINTENANCE 50 Parts List LSQWRF65M NaD M for ELO1500500 D Series Modular Air cooled Scroll Chillers Service Manual
25. vibration as much as possible 4 DIMENSION DATA 1 Graph for the shape and size for LSQWRF65M NaD M LSQWRF80M NaD M nr 7 319 L 1396 1750 Ground bolt 4 M12 2040 2160 967 bolt 1000 Unit mm 17 INSTALLATION Manum oS Service Manual m 2 Graph for the shape and size for LSQWRF130M NaD M Unit mm L 2160 1617 Ground bolt 4 M12 2026 Ground bolt 4 M12 1650 2226 3 Graph for the shape and size for LSQWRF160M NaD M Unit mm 2 2160 2 LI 339 L 1676 _ 1617 Ground bolt 4 M12 L 2026 Ground bolt 4 M12 L 1650 a 2226 INSTALLATION 18 D Series Modular Air cooled Scroll Chillers a Service Manual 5 MACHINE FOOTPRINT A minimum spacing of 1m should be left between any two modules for unobstruc
26. z ueis s ZAJA 5 uorsuedxe uejs S LAN L n AJ m S vH3 2 GANS 8 SSEOXUEJ y WAS WES 8 8 Ex 4 Jeyeeu uejs s LHI T 8 a lad 8 o 2 2055910300 y uejsfs PANO Sen WEN S o 5 205551909 5 amp dWoo 1 20 Ju 0888 4 waishs ZAWOD i E 374 2 E 5 10888 4 LdWoo E Z poguen 24 8 Lpueoquew _ 19 8 5 m s uc a 5 x ao 8 20 Tee NS amp lla m 8 3 alg Qe 555 5 it je lt 3 on 9 5 8 g ER 13160 5 Le ao E lt Bd p p ILL a JES s E a gt aiu E U 355 _ 8 5 902 26 ale Bt v u 122 228 2 al m lt o lt 2 kS si X s g P 58 57 ME 8 0 N 812181 S z MVS _ SOL 091 E 51515 3 22 5 p 5 8 i 85 8 Fu SE vl 65 A sE 8 2 p fa Re 5 Sse B 28 2X e s 1 s a s 2 ost 598 T a 5 s zzz 8 Sra E x a2 2 N Le g Fea e st 555 4 29 Pu U gag 5 5 d 5842 iz E LES x 25858
27. 0240 38 Phase Reverse Protector 32214101 39 Over Current Protector 46028000010 40 Main Board 30222000002 53 MAINTENANCE 2 o 9 o lt 5 5 5 z S o a 5 c 2 0 3 Model LSQVVRF130MINaD M 30 9 37 LO 42 41 54 MAINTENANCE Parts List LSQWRF130M NaD M for 01500510 D Series Modular Air cooled Scroll Chillers Service Manual No Name of part Part code 1 Rear Grill 01571100001 2 Condenser Assy 1 0112110001101 3 Lower panel 01541100005P 4 4 way Valve 43000339 5 Electric Expand Valve Fitting 4304413214 6 Filter 07218603 7 Electronic Expansion Valve 07331139 8 Condenser Assy 2 0112110001201 9 Lower panel 01541100006P 10 Lower panel 01541100007P 11 Sensor Sub assy 39008000003G 12 One Way Valve 07332224 13 Chassis Sub assy 01191100004P 14 Dry Evaporator 01058800013 15 Pressure Protect Switch 4602001570 16 Pressure Protect Switch 4602001584 17 Pressure Protect Switch 4602001585 18 Steam current Switch 45028209 19 Compressor 00201100002 20 Gas liquid Separator 07424148 21 Compressor Gasket 02118049 22 Pressur
28. 12 9 Ge si N V N gt 10 esnsseid moy L waysks 2141 i Bunes 10 eanssead wo lt 1588 xL Wiel 5 LJopejuoo oupeje Jesn OLWYN i m m z m ii E 1980 5 m wiopeuooue3 o t EVEN ZW wl gl ale s ue3 4 si auna 7024109 10888 4402 MU woe 520021005 5 L 210100000 1088914 0 5 ig LJopejuooiosseuduog LN L N6 2 3 eunsseud uBiu p ue s S 5 2 8 Youms einssaud yBiy 6 is fs o E ensseid uBiu Z vuajs s 22 22 2 E m 15 2 uols einsseid yBiy 8 vesnj 904 z 3A N8 me o 5 604 8 5 sm zesnj zn4 asn 4 Ina pes n uano pyd M VY t1opejudiueumoeno 694 Dx sl Z 24 x 8 em enen uoisuedxe p uejs S 2 aHa 5 x uorsuedxe uasAs 1 5 Et uojsuedxe
29. 2230 2230 2230 2230 Net Weights kg 710 760 1256 1440 Operating weight kg 781 836 1382 1584 Auxiliary electric heater kW 15 15 30 30 power Ref Loadin 9 40 GP 40 HQ 10 10 10 10 6 6 6 6 quantity Notes a The unit is designed manufactured inspected and tested in accordance with GB T18430 1 2007 b Parameters on the nameplate always take precedence c Consult the local sales agency concerning special requirements and we will go to the length of figuring out the most feasible solution PRODUCT 4 4 2 Nominal capacities are based on the follow conditions D Series Modular Air cooled Scroll Chillers Service Manual Water side Air side Item Water flow volume Leaving Water Temperature Dry bull temp Wet bull temp CIT CIT CIT Cooling 7145 35 95 0 172 Heating 45 113 7 45 6 43 4 3 Operation Range Water side Air side Leaving Water Temperature Temperature Difference of Water Air on Condenser oJ CIF CIF Cooling 5 15 41 59 2 5 6 37 43 15 45 59 113 Heating 40 50 104 122 2 5 6 37 43 15 24 5 75 Note when the unit is going to operate beyond the working conditions please contact Gree for consultation 4 4 Electric Data Notes MRC Maximum running current A NRC Nominal running current A Compressor Fan Motor Air Switch Model Rated Power Supply MRC Each NRC Each NRC Each MRC
30. 4 yA 44 oj co 28 29 aja 4156 Fui 292 d 34 5 dX 21 21 KM2 Vi 1 msn 2 4 e 21416 z gjoja oja 858 598 Ta t x Ia Systemi 2 VN ff 1 117 M2 PE System 1 PE System 2 PE System 1 PE System 2 220V Field Assembly 2 2 2 2 T il sk 2 23 M 23 1 1 M M S 5 Kuz KN Xy 2 2 2 2 uu 13114 15 16 42 43 44 5 46 7 30 31 32 33 34 35 36137 38 39 40141 H ema zh E CN43 CN44 CN38 CN1 CN2 CN31 CN32 CN21 CN35 CN36 CN29 Mainboard AP lt lt 5 1x6 CN45 CN58 CN39 CN16 ON17 S SZ Y E x 32 J xz J Ex 49 50 51 52 53 54 55 56 57 5859 6061 71174 7374 75176 77178 7980 8182 4 5 2 XT2 e Mas 18 61 62 6364 65 66 67 68 69 70 71 72 dz d d g dd 1 1 Ay 6 12 ii pals FAV FAT w7 gy m 4 251 252 18 20 2 RTI RT2 RT4 RTS RT7RT8 8113 SW 1 ien Pera 2 LP21 LP22 20K 20K 20K 50K 20K 20K 50K 15K XT3 COMPONENT POSITION DIAGRAM The Modules are connected as follow Control module 1 Control module 2 Control module 3 FA 2 se Adress DIP switch Adress DIP switch Adress DIP switch N25 2 25 CN25 Emm Manual panel 2 ON CN15 ON CN15 CN15 t
31. 924009 jeieeu 11 4059 201263002 dund 1951 eui Aq 841418 eui sejeo pu uaxo4q SYL lun Ajuo 3u y 40 peddinbe zou pd 1891 12411141 PAA ZAA LAA d y eus spaeoquieu om 40 3u 33es YOIIMS did Z s eiop 40 uoijonijsu 943 4 484044 39 eus e npou 041400 jo uoi 4s diq SSe4ppe 3se y o3 qo uuoo 04140 g e npou 041409 ejnpou 4 09 O Se pejoeuuoo se npoy 81X LIX XSL 308 02 MOZ OS XOZ uel SIN ply l4 6END 14219 LENI b a ga 12 0 169 v iv kv lewy 17 IN 07 88 9 VNO BENI GENO 12419 GENI 07 BEND 29 19 09 69 2 zw wo ions Bassus Blas jes Iq ig Jena ens 6v 8v 17 9v HA Gp vin ev cix Nd Lt 66 ueisAg 34 weyshg dd 123545 ueisAg 34 Z Jd uejsAg 39 FA e G 34 34 N IL TILL I 62122 112 06 6 SLL LOL m
32. Compressor It is the same as that in selection 2 1 1 2 2 2 Over temperature Protection For each single module when the over temperature is higher than the limit value over temperature protection will work when the over temperature goes lower than the normal value over temperature protection will quit when the over temperature is between the limit value and the normal value the module is still protected again over temperature 2 2 3 Control on the Auxiliary Electric Heater When the auxiliary electric heater is enabled through the wired controller it will work in accordance with the change of the entering water temperature When the flow switch and the entering water temperature sensors work normally any other error can be ignored When the auxiliary electric heater is disabled through the wired controller the auxiliary electric heater will stop working When all entering water temperature sensors malfunction the auxiliary electric heater will stop working When any flow switch malfunctions the auxiliary electric heater will stop working When the unit is under over temperature protection but the auxiliary electric heater is not allowed to stop the auxiliary electric heater will keep working until the entering water temperature reaches the set point 2 2 4 Shutdown Shutdown manually or timely in this case the compressor and the auxiliary electric heater stop firstly then the electronic expansion valve initializes and then the 4
33. LSQWRF80M NaD M 1 MAINTENANCE 52 Parts List LSQWRF80M NaD M for 01500520 D Series Modular Air cooled Scroll Chillers Service Manual No Name of part Part code 1 Electric Expand Valve Fitting 4304413213 2 Electronic Expansion Valve 07331139 3 Magnet Coil 4300040064 4 4 way Valve 43000412 5 Filter 07414118 6 Pressure Protect Switch 4602001570 7 Pressure Protect Switch 4602001582 8 Pressure Protect Switch 4602001579 9 Rear Panel 01541100001P 10 One Way Valve 0733420001 11 Sensor Sub assy 39008000004G 12 pipe connector 06128301 13 Compressor 00201100004 14 Dry Evaporator 01058800057 15 Steam current Switch 45028209 16 Gas liquid Separator 07421111 17 Compressor Gasket 02118049 18 Electrical Heater 76515211 19 Pressure Protect Switch 4602001583 20 Pressure Protect Switch 4602001581 21 Pressure Protect Switch 4602001569 22 Strainer 07210037 23 Electric Expand Valve Fitting 4304413214 24 Magnet Coil 4300040048 25 Condenser Assy 01121100020 26 Front Panel 01541100003P 27 Front Panel 01541100002P 28 Streamlined Dome 22265801 29 Centrifugal Fan 10355801 30 Fan Motor 15701100003 31 Electric Box Assy 01391100061 32 Terminal Board 42018452 33 AC Contactor 44010229 34 Terminal Board 42011135 35 Single phase Air Switch 45020203 36 Terminal Board 420102471 37 AC Contactor 4401
34. ND REINSTALLATION 3 1 MAIN PARTS Appearance Name Function It drives the refrigerant cycle and turns the low Compressor temperature low pressure refrigerant vapor into high temperature high pressure vapor Accumulator It is used to separate oil and refrigerant liquid from the refrigerant vapor ll It is used to shift the direction of the refrigerant flow to Aaway valve realize either cooling or heating Shell and In the cooling mode it is used to absorb heat and tube heat evaporate the liquid refrigerant In the heating mode it is used to release heat and condense the refrigerant exchanger vapor Fintube heat In the cooling mode it is used to absorb heat and evaporate the liquid refrigerant In the heating mode it exchanger is used to release heat and condense the refrigerant vapor r Electronic It is used to regulate the flow rate of the refrigerant to E make it perfectly match with the load in need MAINTENANCE 34 Service Manual D Manual 3 2 Removal and Installation of Main Parts Compressor These steps listed below are applicable to the dual system unit For the four system unit please first remove the electric boxes of two compressors in between and then follow the steps below Note Be sure there is no refrigerant in the pipeline system and the power supply is cut off Steps Graphic Repren
35. ain Step 5 Take the leakage test Be sure the vacuumed system keeps a pressure no higher than 80Pa and keeps little pressure rise in half an hour c Refrigerant charging starts after the degree of vacuum reaches the expected range and lasts for 30 minutes The amount of refrigerant charge shall comply with that specified on the nameplate or product data sheet Adding Low pressure gage gage Manifold gage 74 Refrigerant charge LO 2 2 Pipeline Refrigerant charge is determined through stringent tests as excess or shortage of refrigerant would cause the compressor to run improperly Thus the refrigerant charge shall be consistent with that specified on the nameplate If refrigerant charge is indeed insufficient follow the steps below for adding Step 1 Weigh the refrigerant tank with an electronic scale and connect the refrigerant tank with the pressure gage through the pipeline Step 2 Expel the air inside the pipeline Firstly half open the shutoff valve of the refrigerant tank and then loosen the connector connecting the pressure gage to expel the air until the connector hisses for five seconds and then tighten the connector Step 3 Return the electric scale to zero by energizing it again Step 4 Open all valves between the refrigerant tank and the unit to charge refrigerant as per the amount specified on the nameplate Excessive refrigerant would dilute oil while insufficient refrigerant would lower
36. aller rotating torque lower noise and vibration and higher reliability and efficiency Super protection It is equipped with the top end microcomputer control system which is capable of providing well rounded protection and self diagnosis such as high low pressure protection freeze protection over temperature protection compressor overload protection phase loss reversal protection water flow switch protection etc High reliability It is constructed of well designed refrigeration parts for multiple refrigeration cycles adequately guaranteeing the reliable operation Compact structure The modular design enables the compact structure reduced volume light weight easy handling and shipping and flexible installation Low maintenance cost The especially design structure allows easy access and service and low maintenance cost Low noise The unit runs with low noise and vibration widely applicable for various projects Quiet mode The unit is allowed to run in the quiet mode based on the user s requirement which can not only save energy but also create a comfortable and pleasant living environment Economy mode The unit can run in the economy mode without lessening the air conditioning effect so as to cut down the electricity consumption Equilibrium running Tt indicates each compressor will run alternately so as to extend their service life Powerful remote monitoring Gree centralized air conditioning sys
37. box 21 INSTALLATION p 2 o 5 pun o lt 5 2 z o o a 3 c 0 z 9 gt o 8 2 Wiring between Chiller Modules BU JO uoyws 6unoeuuoosip sjod jje 1see ue uy peddinbe aq ajqeo amod y YJOMJSU pesseooe 9 xew euo jsej jun xeu eui Joeuuoo ejnpouu euo Bunsisuoo CeN IG9JHMOS1 59 euo jo Bunsisuoo 08 jo Bunsisuoo JN QeNJINOE L3HMOS 061 isajnpouu Bunsisuoo 109 4 51 09r t y 4 pjnoys 941 pue syed jeuondo pue Aejas e peJinbai si 1 54008 speeoxe uoneoiunuJul09 y JO 06 speeoxe y episui sjotual 210N 104 090 044 snqpoj j Jesn eu Z uo ejyouleJ y esu ejqeo Jaqqns 110 e uoee BU uo 27 pue 1 1
38. changer exchanger 45 MAINTENANCE D Series Modular Air cooled Scroll Chillers Service Manual UT 4 a new heat exchanger Install a new heat exchanger and vacuum Braze the pipeline the system Vacuum the system until the pressure is as and then low as 1 0 charge The refrigerant charge and quality shall comply refrigerant with the specification on the nameplate and lastly Take care to the wiring sequence when rewiring put the fan the fan motor and metal sheets back Electornic Expansion Valve Note check the refrigeration system and be sure the electronic expansion valve shall be replaced and then cut off the power supply and recover the refrigerant Steps Graphic Representation Instructions 1 Recover Cut off the power supply the refrigerant Recover the refrigerant and remove Remove the panel the panel ectronic expansion 2 R the Dicas Wrap the valve with wet close to prevent the slide block from being burnt down expansion mum never the let water flow into the pipeline valve coil MAINTENANCE 46 Service Manual 3 Remove the Unbraze the electronic expansion valve connection Charge nitrogen during brazing pipe of the electroni Take care to prevent surrounding item from being burnt down owin
39. cording to the related national standard d The specifications of the breaker listed in the table above are applied to the breaker with the working temperature at 40 C If the working condition changes they should be modified according to the related national standard 8 4 WIRING DIADRAM 1 LSQWRF65M NaD M Power 1 XT2 16 20 n 22 u 4 1 zu 5 Eg B 11 15 08 L3 3 18 3 N N 19 4 23 6 PE 123 415 6 7 89 10 112 13 1415 das dis D PPP PE pu QA sav das 248 248 28 2 rul rua daa 7 MOS 2027 588 s x 55 FAT EE s sas gas saa E OUS v 8 HE 116 cou 117 n 3 ES i z PE System System 2 PE PE System 2 n n ka zj
40. ctor 44010240 51 Phase Reverse Protector 32214101 52 Single phase Air Switch 45020203 53 Over Current Protector 46028000008 57 MAINTENANCE JF00301781 GREE ELECTRIC APPLIANCES INC OF ZHUHAI Add West Jinji Rd Qianshan Zhuhai Guangdong China 519070 Tel 186 756 8522218 Fax 86 756 8669426 E mail gree gree com cn www gree com For continuous improvement in the products Gree reserves the right to modidy the product specification and appearance in this manual without notice and without incurring any obligations
41. e the system model that approved by the qualified F technician the 4 way Wrap the 4 way valve with wet cloth valve and Reconnect the connection pipe as before reconnect MM ee Braze the pipeline the pipeline Charge nitroge when unbrazin as before 9 9 9 and clean the system 3 Vacuum Vacuum the system until the pressure the system goes as low as 1 and charge The refrigerant charge and quality shall refrigerant comply with the specification on the again nameplate 37 MAINTENANCE Note Be sure to recover the refrigerant prepare proper devices and tools and keep a good ventilation Steps Graphic Representation Instructions 1 Remove the panel as Remove the panel as shown in the left shown in the figure with a screwdriver right figure 2 Disconnect the connection Unbrazer the connection pipe of the pipe of the accumulator accumulator 3 Remove the 4 way valve assembly if necessary Unbraze the 4 way valve assembly way valve as MAINTENANCE 38 D Series Modular Air cooled Scroll Chillers Service Manual 4 Remove the bolts at Remove bolts at the base with a wrench the base 5 Remove the Remove the accumulator accumulator 6 Purge the system by charging nitrogen
42. e Protect Switch 4602001582 23 Pressure Protect Switch 4602001579 24 Electrical Heater 76515211 25 pipe connector 06128301 26 Pressure Protect Switch 4602001547 27 Strainer 07210037 28 Electric Expand Valve Fitting 4304413213 29 Magnet Coil 4300040048 30 Magnet Coil 4300040049 31 Lower panel 01541100004P 32 Side Plate 01311100006P 33 Streamlined Dome 22265801 34 Centrifugal Fan 10355801 35 Fan Motor 15701100001 36 Terminal Board 420111251 37 AC Contactor 44010235 38 Terminal Board 42010247 39 Terminal Board 42010254 40 Terminal Board 42011135 41 Over Current Protector 46028000011 42 Terminal Board 42018452 43 Main Board 30222000002 44 Electric Box Assy 01391100047 45 AC Contactor 44010229 46 Single phase Air Switch 45020203 47 Phase Reverse Protector 32214101 55 MAINTENANCE p 2 o 5 pun o lt 5 2 z o a 3 c 0 z 9 gt o 4 Model LSQWRF 160M NaD M 50 5 5 53 49 23 24 N28 N 70 22 20 21 56 MAINTENANCE Parts List LSQWRF130M NaD M for 01500530 D Series Modular Air cooled Scroll Chillers Service Manual No Name of part Part code 1 Condenser assy 2 0112110002501 2 Rear Grill 01571100001
43. e circuit diagram attached on the unit prevails 23 INSTALLATION oa oS Service Manual a 2 LSQWRF80M NaD M G gt Power 1 2 OF PM 11 11 p s 16 1 20 T4 5 15 18 12 19 I 17 2 15 18 L3 L3 4 34 3 N N 814 3 1 16 t 789 1011112 13114115 2425 2621 dda FAI N 1 FA H
44. e range control assisted by the temperature drop rise rate control is capable of precisely adapting the load change of the terminal units and avoiding remarkable water temperature fluctuation 2 1 2 Freeze Protection For each single module when the anti freezing temperature or the leaving water temperature is lower than the limit value freeze protection will work and this module stops when the anti freezing temperature and the leaving water temperature go higher than the normal value freeze protection will quit when the anti freezing temperature and the leaving water temperature are between the limit value and the normal value the module is protected again freeze 2 1 3 Shutdown Shutdown manually or timely in this case the compressor and the auxiliary electric heater stop firstly then the electronic expansion valve initializes and then the 4 way valve is de energized and lastly the water pump stops Shutdown when reaching the set point in this case the compressor stops firstly and then the fan stops and the electronic expansion valve initializes However the 4 way valve keeps its state unchanged and the water pump keeps running Shutdown due to errors in this case the compressor stops firstly and then the fan stops except that the fan is malfunctioning and the electronic expansion valve initializes However the 4 way valve keeps its state unchanged and the water pump keeps running 2 2 Heating Control 2 2 1 Control on the
45. eline Remove the metal sheets located and remove th pan l underside vvith a screvvdriver e of Loosen the blind plug and drain the water the heat inside the pipeline exchanger 3 Unbraze the pipeline connecting the heat exchanger Different heat exchangers Wrap the cooper pipe with wet cloth vary Unbraze the pipelines connecting the heat structure so it is better to remember the piping location to prevent misconnection exchanger 41 MAINTENANCE S Service Manual m 4 Loosen four screws Loosen four screws fixing the heat fixing the heat exchanger with a screwdriver exchanger 5 Remove the shell and Remove the shell and tube heat tube heat exchanger exchanger 6 Place a Replac the heat exchanger with the same model new heat Wrap the cooper pipe with wet cloth and braze the pipeline and connect the pipeline Vacuum the system until the pressure and then goes as low as 1 0bar The refrigerant charge and quality shall comply with the specification on the System and lastly charge nameplate refrigerant Connect the water pipeline Put the metal sheets back MAINTENANCE 42 D Series Modular Air cooled Scroll Chillers Service Manual Fan Note Be sure to cut off the power supply firstly Steps Graphic Representation nstructions 1 Re
46. ervice widely used at newly built or retrofitted industrial and civil buildings in various sizes such as hotels apartments restaurants office buildings shopping malls theaters gyms workshops hospitals and other places where there are high requirements on noise level and air quality but it is troublesome to install the cooling tower D series modular air cooled scroll chillers are constructed of one or up to 16 single units which may vary in structure and in cooling capacity The 65 80 units have two independent refrigeration cycle and the 130 160 units have four The modular design is able to realize the modular system with the cooling capacity ranging from 60 to 1160kW 3 2 Features D series modular air cooled scroll chillers work outstandingly by virtue of their major features stated below High energy efficiency It is initially certified as one of the energy saving chiller products in China Free master unit design Any single unit can operate as the master once connected with the control panel It overcomes the problem which would occur to the product of other manufacturer that the whole system would fail to work properly when the fixed master unit malfunctions Excellent compatibility Each chiller is constructed of up to 16 single units of 65NaD 80NaD or up to 8 single units of 130NaD 160NaD Hermetic scroll compressor Compared with other type of compressor under the same cooling load it has few movable components sm
47. from the second refrigerant and then is drawn into the compressor again The second refrigerant is then transferred to where air cooling is required Reverse Refrigeration Cycle During the reverse refrigeration cycle a 4 way valve is used to make the refrigerant flow in a reverse direction as stated below The hi temperature and hi pressure refrigerant vapor coming out from the compressor directly releases heat to the secondary refrigerant and turns to the refrigeration liquid Then the refrigerant vapor passes the throttling device and flows into the air cooled exchanger where it evaporates by absorbing heat from the surrounding environment and then is drawn into the compressor again The second refrigerant which has approached the temperature set point is then transferred to where air heating is required PRODUCT 6 2114 Service Manual CONTROL 7 CONTROL D Series Modular Air cooled Scroll Chillers m Service Manual m CONTROL 1 OPERATION FLOWCHART 1 1 Cooling Operation CONTROL 8 eS m Service Manual 1 2 Heating Operation 9 CONTROL oS Service Manual m 2 CONTROL LOGIC 2 1 Cooling Control 2 1 1 Control to the Compressor 1 First On First Off First On First Off First Off First On control indicates the numbered compressor which is started stopped firstly will then be stopped started firstly 2 Temperature Drop Rise Rate Control The water temperatur
48. g to high temperature expansion during brazing valve 4 Remove the electronic Remove the electronic expansion valve expansion valve 5 Place Braze each pipeline new Charge nitrogen during brazing electronic Take care to prevent surrounding item expansion from being burnt down owing to high valve temperature during brazing 47 MAINTENANCE D Series Modular Air cooled Scroll Chillers Service Manual 6 Reinstall the electronic The coil shall be matched with the valve expansion body exactly valve coil and The degree of vacuum shall be kept as low vacuum the as 1 0 bar System and The refrigerant charge and quality shall comply then charge with the specification on the nameplate refrigerant After replace the electronic expansion and lastly valve energize the unit again put the Reinstall the panel panel back 4 ROUTINE MAINTENANCE Routine maintenance shall be performed by the skilled and qualified servicemen 1 Refrigerant Leakage Suds is usually used for the leakage test by applying it at the spot soldering spots valve pistols connectors where leakage is probably to occur During the test if soap bubbles pop up it indicates leakage exists and repair is required If suds fails to work a electronic leakage detectors is a alternative Refrigerant charge can be checked by measuring the suction and discharge pressure Leakage test should be perf
49. ischarge protection Discharge temperature sensor When it is detected in three consecutive seconds that the discharge temperature exceeds the set point the compressor will be shut down immediately Meanwhile the error information will be displayed among the error log which must be manually cleared for normal operation of next time Fan over current protection Fan over current protector When a fan is over current the corresponding unit will be shut down Meanwhile the error information will be displayed among the error log which must be manually cleared for normal operation of next time Temperature sensor protection Temperature sensor When an entering water temperature sensor fails the compressor of the corresponding module will be shut down immediately while the fan will still run for some time When discharge temperature sensor fails or the sensed discharge temperature is always below the set point the compressor of the corresponding module will be shut down immediately It can recover in three seconds but If the same case occurs more than three times the system will be locked until the system is unlocked and then it should be manually cleared for normal operation of next time When the anti freezing temperature sensor or the leaving water temperature sensor fails it can be automatically cleared as the temperature sensor automatically recover But if the same case occurs three times in one hour or the temperature
50. move the panel as shown in the right figure Remove the panel as shown in the left figure 2 Remove the guard cover Remove the guard cover with a wrench 3 Remove the fan blades PE b Remove the fan blades with a screwdriver 43 MAINTENANCE D E Service Manual m HI 4 Remove 1 Remove the motor with a wrench the motor 5 Remove Remove the frame the frame 6 Reinstall Reinstallation sequence 1 frame 2 the fan motor 3 fan blades 4 guard cover 5 assembly panel MAINTENANCE 44 E Service Manual Fintube Heat Exchanger Note Be sure to cut off the power supply and recover the refrigerant firstly Steps Graphic Representation Instructions Recover refrierant completly Cut off the power supply 1 Remove Remove the fan assembly and draw out the panel as the power cord of the fan motor and then shown the remove the metal sheets outside the right figure condenser Note remember the wiring sequence of the fan motor 2 Unbraze the inlet outlet pipeline of the heat exchanger Unbraze the pipeline of the condenser Do not damage the fins and metal sheets during unbrazing 3 Remove the frame of Remove the frame of the header with a the header and screws wrench Remove screws and bolts on the heat and bolts h on the heat ex
51. mply with applicable codes and engineering requirements All field wiring shall be performed by the qualified electrician Never perform wiring before the power supply is cut off Any damage caused by the improper external wiring shall be at the installer s expense WARNING only copper conductor is allowed 1 Power Cord Routing into the Electric Box The power cord is wired into the internal electric box The power cord must be routed inside the conduit The power cord must enter the electric box through a rubber or plastic ring to avoid any damaged caused by the sharp edge of the metal sheet The power cord close to the electric box must be attached securely to prevent the terminal block of the electric box affected by the outside force 2 Control Line The field supplied control line shall be at a minimum 1mm What the flow switch receives is the DC low voltage signals The wiring of the flow switch shall not be parallel with the 50V or higher line If inevitable the hi voltage and low voltage signals must keep a distance of at least 150mm The electric box will send the control signal 220 AC 5A to control the chilled water pump and auxiliary electric heater however never do not drive them directly through the control signal but through their AC contactors Areasonable length of the control line should be left outside the unit and the rest should be bundled and fed into the electric
52. o connect the control module nnnm 588 1011 4 until to the last module X 12 0833 12 3 4 0833 1 2 3 4 0833 XT2 XT4 XT5 Compressor RTI Leaving vater Temp sensor M Fan 2 Antifreeze Temp sensor EH Compressor band heater System 1 defrost Temp sensor FA Overcurrent protector RTA System 1 discharge Temp sensor PM Phase protector RT5 Entering water Temp sensor QF Air switch 7 System 2 defrost Temp sensor 1 The address DIP switch for each control module shall be already FU TER syaten 2 d har s Tet 2 Mainboard RT13 Environment Temp sensor set properly See the instruction manual for more details EKV Electronic expansion valve Systen 1 high pressure YV valve System 2 high pressure switch 2 YV1 YV2 LP11 and LP21 are not equipped for the cooling only unit 2 Compressor AC contactor LP11 System 1 low pressure switch for heating 4 Fan contactor LP12 System 1 low pressure switch for cooling 3 The broken line indicates the wiring by the user SATI Fan 1 internal prorector LP21 System 2 low pressure switch for heating SAT2 Fan 2 internal protector LP22 System 2 low pressure switch for cooling XT1 Wiring terminal 0 1 12 13 XT2 Wiring terminal 1 10 Wiring terminal 11 20 XT4 Wiring terminal 61 66 XT5 Wiring terminal 67 72 SW Flow switch Code Name Code
53. ormed wherever leakage occurs or some components of the refrigeration system are replaced There are two difference conditions for charging refrigeration stated as below Complete charging In this case take a leakage test by charging hi pressure nitrogen 15 20kg or refrigerant into the system If soldering is required note that gas inside the system must be expelled firstly The whole system must be dried and vacuumed prior to charging a Connect the manifold gage b Vacuum the system with a vacuum pump Step 1 Expel the hi pressure nitrogen for leakage test Step 2 Connect the pipeline at both the high and low pressure sides of the manifold gage as shown in the figure below Note that vacuuming shall be taken at both sides The degree of vacuum will refer to the reading of the manometer at the low side Low pressure gage Hi pressure gage Manifold gage Vacuum pump 72 LN Pipeline Pipeline Pipeline MAINTENANCE 48 J Service Manual Step 3 Open the valves at both the high pressure and low pressure sides and then start the vacuum pump until the gage reading is below 1bar After that let the vacuum pump lasts for another 0 5 1 0 hour Step 4 Close the valves and stop the vacuum pump Note that only the valves have been closed can the vacuum pump be stopped otherwise air is possible to go into the system ag
54. r rewire Clean the heat exchanger Replace the check valve valve clogged2 No Is the water pipeline arranged irrational Will the flow rate decrease when the terminal unit is turned off No Does refrigerant leak No Does the controller raise a wrong alarm No Consult the supplier MAINTENANCE 30 Yes Rearrange the Yes Yes water pipeline Take the leakage test and then add refrigerant Replace the main board if this occurs frequently 3 High discharge protection High discharge protection Yes Does the discharge temperature reach 130C No Yes Dos the electronii expansion valve work normally No Yes No Is the filter clogged Yes No 15 a wrong discharge temperature sensor used Yes Does the controller No raise a wrong alarm Yes Consult the supplier Is the measured resistance of the temperature sensor among the allowable range No Replace the temperature sensor Replace the main board Replace the coil or even the valve body Replace the filter Change the temperature sensor Replace the main board if this occurs frequently D Series Modular Air cooled Scroll Chillers Service Manual 31 MAINTENANCE Service Manual m 4 Compressor over load protection Compressor o
55. rd and in data modification mode press the button to increase the value In menu selection press the button to move the cursor downward or rightward T Down selection button and in data modification mode press the button to decrease the value 8 Exit button Press the button to go back to the previous menu In menu selection press the button to confirm the selected item and in data modification 9 Confirm button mode press the button to confirm the parameter and move the cursor 10 LCD Information display zone CONTROL 12 2 Display Icons on the Homepage D Series Modular Air cooled Scroll Chillers Service Manual 1 Power 12 01 10 Tues 12 30 2 5 Modular Unit 3 Run Cool OFF 4 Manual 0 Modules Error Icon Description 1 Time It indicates the current time 2 Unit name It indicates the unit name 3 Running mode It indicates the running mode cooling heating or manual defrosting 4 On Off mode It indicate the on off mode manual or timing 5 Running status It indicates the running status on or off 6 Module quantity It indicates how many modules this system is consisted of max 16 13 CONTROL D Series Modular Air cooled Scroll Chillers Service Manual 3 1 2 Menu Structure of Controller CONTROL 14 Menu Structure gt Mode Water Tin XX X C
56. t the cooling mode At the heating mode it will start after the compressor runs During defrosting it stops and then starts again after defrosting It will stop later than the compressor upon shutdown 2 7 Control to the Water Pump When any module is required to run incl manual startup timely startup startup again freeze water pumps of all module starts Then when one module reaches the set point and is shut down water pumps of all modules keep running when one module is shut down manually or timely its water pump keeps running and will stop only after all modules are shut down when one module malfunctions and is shutdown its water pump keeps running 2 8 Control to the Electronic Expansion Valve The electronic expansion valve initialize when the wired controller is emerged for the first time After the compressor has been started the electronic expansion valve starts to adjust its opening angle 2 9 Protection 2 9 1 Recoverable Protection Compressor 1 2 low pressure protection When it is detected the low pressure switch of compressor 1 compressor 2 is opened compressor 1 compressor 2 will be shut down immediately Meanwhile the indicating LED will light on and the error information will be displayed among the error log which must be manually cleared for normal operation of next time Compressor 1 2 high discharge protection When it is detected in three consecutive seconds that the discharge temperature of compressor
57. t will be shut down automatically and then the water pump will stop Phase loss reversal protection When phase loss reversal occurs the power supply to the main board will be cut off 3 CONTROLLER 3 1 Wired Controller This wired controller especially designed for D series modular air cooled chillers is capable of controlling and displaying each running parameter of the chiller and being integrated into the remote monitoring system 3 1 1 Press Buttons and Icons on the Homepage 1 Press Buttons PGREE 1 O Power 12 01 10 Tues 12 30 2 0 Modular Unit 18 OFF Manual 0 Modules 3 O Error 4 5 6 7 8 9 Function description 1 Power indicator red the indicator is on when the Wired Controller is powered on or otherwise it is off Run indicator green the indicator is on when the Wired Controller is started or otherwise it is off Error indicator red The indicator is on when the unit is at fault or otherwise it is off u On Off button For controlling unit conversion between start and stop press the button for 3 seconds in stop state to start the unit and press the button for 3 seconds in operation state to stop the unit 5 Reset button Press the button to clear fault and relieve the air discharge temperature sensor locking 6 ds election in menu selection press the button to move the cursor upward or leftwa
58. tation Instructions Loosen screws around the panel with a screwdriver 1 Remove Remove the panel the panel Collect the screws in case of loss Place the panel in the right place to avoid inadvertent damage Remove the panel here Loosen screws for the power cord with a 2 Draw out the power cord the power Remove the crankcase heater if applicable cord and Remove the drain pipe drain pipe Note when removing the power cord mark the color of the power cord and the code of the wring terminal to avoid misconnection Remove the drain pipe Open the cover and remove the power cord 3 Separate the Unbraze the brazing spots of the pipeline compressor as quick as possible from the Minimize damage on the compressor for pipeline further analysis System E Soldering spot 35 MAINTENANCE 54 ______________ Service Manual m 4 Loose Remove screws with an adjustable screws at the wrench or a socket wrench base of the Collect screws in case of loss compressor Remove the compressor and do not damage 5 Replace the rubber pad ihe Package the removed compressor to prevent moisture entering compressor Place a new compressor at the base Tighten screws Connect the suction and discharge lines to the compressor by brazing Note that nitrogen shall be charged during brazing After brazing use high pressure
59. ted air intake and equipment service Additionally a minimum of 2m should be kept between the chiller and any barrier If allowable it would be better to set up a suncover 3m ahead of the chiller Unit mm Z 8 1000 2 Air Outlet Air Outlet j Air Outlet Air Outlet 1 6 e b Q EID 3 3 S 4 u P TRE esa 4 _ 317 1676 1396 4238 2226 2040 Rubber cushion pad shall be attached under unit base which shall be fixed on the foundation with bolts Air Inlet Air Inlet N 2000 Air Inlet Air Inlet 19 INSTALLATION D Series Modular Air cooled Scroll Chillers Service Manual 6 TYPICAL WATER PIPING DIAGRAM Fan coil unit Expansion tank gt lt C Manual exhaust yalve Manual exhaust valve Ce Manual exhaust 0 0 to connect the 9 8 Y Y X distribution box 2 7
60. tem can be perfectly integrated to the BMS or Gree remote monitoring system so as to realize remote control to its operation and remote monitoring to its running parameters and alarm data etc Control Control Control 2 panel 2 panel 2 panel 5 B RS232 485 Converter PC PC TOMT Commuhication TOMT Communication To connect the BMS Wiring Drawing between Modules Intelligent ON OFF control The unit is capable of automatically turning on off the compressor through controlling the entering water temperature and the temperature rise rate in accordance with the change in load so as to make the capacity of the unit perfectly match the required load and reduce to the most extent the electricity consumption and effectively avoid remarkable temperature fluctuation 3 PRODUCT Mam gt 0 Service Manual 4 PRODUCT DATA 4 1 Product Data at Rated Condition LSQWRF65M NaD M LSQWRF80M NaD M LSQWRF130M NaD M LSQWRF160M NaD M Models Code 101500500 EL01500520 EL01500510 EL01500530 Capacity steps 90 0 50 100 0 50 100 0 25 50 75 100 0 25 50 75
61. verload protection Is the overload protector broken Replace it Consult the supplier 5 Phase protection Phase loss reversal protection Are phases are wired improperly Check the power supply Is the phase protector broken Replace it Does the controller Replace the main board raise a wrong alarm ifthis occurs frequently Consult the supplier MAINTENANCE 32 6 Water flow switch protection Flow switch protection Has the water pump been started No Has the flow switch not been installed or installed improperly No Does the flow switch malfunction Does the controller raise a wrong alarm Consult the supplier 7 Temperature sensor error Temperature sensor error Check if the plug of the temperature sensor is placed properly in the socket on the main board Remove the temperature sensor and measure its resistance to see if itis among the allowable range Replace the main board D Series Modular Air cooled Scroll Chillers Service Manual Start the water pump Install it or check the instalation Repair it Replace the main board if this occurs frequently Be sure the plug is placed properly in the socket on the main board Replace the temperature sensor 33 MAINTENANCE D Series Modular Air cooled Scroll Chillers Service Manual 3 REMOVALS A
62. way valve is de energized and lastly the water pump stops Shutdown when reaching the set point in this case the compressor stops firstly and then the fan stops and CONTROL 10 Service Manual the electronic expansion valve initializes However the 4 way valve keeps its state unchanged and the water pump keeps running Shutdown due to errors in this case the compressor stops firstly and then the fan stops except that the fan is malfunctioning and the electronic expansion valve initializes However the 4 way valve keeps its state unchanged and the water pump keeps running 2 3 Freeze Protection Under the OFF state at any mode except the manual defrosting mode when the freeze protection is activated through the wired controller the unit will be protected again freeze Free protection is factory defaulted to be ON When the module is in the freeze protection its compressor will work as per the on off setting and also the principle of Six minute On Thee minute Off 2 4 Control to the Compressor compressors run as per the principle of First On First Off and First Off First On See section 2 1 and section 2 2 2 5 Control to the Fan The fan starts earlier than the compressor upon startup and stops later than the compressor upon shutdown During defrosting the fan and the 4 way valve stops After defrosting they start again 2 6 Control to the 4 way Valve The 4 way valve is stopped a
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