Technical Information - Emerson Climate Technologies
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1. rc USE COPPER CONDUCTORS ONLY USE THIS FQUIPMENT ON A GROUNDED SYSTEM ONLY USE MINIMUM 75 C WIRE FOR AMPACITY DETERMINATION INTERNAL MOTOR PROTECTION ALLOW TIME FOR RESET PRIMARY SINGLE PHAS FAILURE PROTECTION S PROVIDED CRANKCASE HEATER WHEN APPLIED MUST BE CONNECTED ONLY TO ITS RATED VOLTAGE OVERCURREN PROTECTION DEVICE RATING AND TYPE MUST B IN ACCORDANCE WITH REGULATORY AGENCY END Z PRODUCT APPROVALS SEE SYSTEM NAMEPLATE TO CORRECT IMPROPER MOTOR ROTATION SWITCH ANY TWO SUPPLY LINES X X E 005 0922 00 3 98 MOTOR WINDING CONNECTION 11 112. 2 Motor Code Scroll refrigerant compressors are available in various motor versions depending upon the size of the load The motor versions differ in operating voltage type of switching number of phases frequency and type of motor protection A code for the motor is included in the model designation to ensure correct designation because of the many variations available during order handling and service An example for the compressor model designation is given below 1 11 A Climate Technologies ZR40K3E ZP235KCE ZS26KCE ZF48K4E ZB11MCE ZH56K4E ee lt lt 5 lt gt 5 50 lt Motor Type Motor Protection Device ae P Single phase motor F Inherent Internal klixon line break motor protection a T Three phase motor C lt W For three phase motors electronic 2 motor protection with thermistors terminal box 200 220 200 PE 55 3 60 O R 7 380 3 60 7 3 3 3 3 575 8 60 3 3 C7 9 1 0703 0104 E m ea 3 50 Table 1 Key to Motor Code Note If there is the letter N at the end of the motor code for example TFDN the motor is not UL approved but is suitable for use within the EU 2 11 e Copeland Technical Information EMERSON C7 9 1 0703 0104 E Climate Technologies 3 Motor Voltages and Frequencies 3 1 Nominal voltage range A nominal voltage range appertaining to the motor is stated in Select Software and on com
3. R2 Crankcase heater S1 Auxillary switch Y1 Liquid line solenoid valve Fig 7 Air Conditioning Scroll Control Circuit 5 11 e Copeland Technical Information EMERSON C7 9 1 0703 0104 E Climate Technologies 8 Cable Connectors The following table Tab 3 lists recommended types of cable connectors to be used for the various electrical terminals of the compressors and the motor protection module A and D must fit 1 4 or 6 3 mm tab sizes B and C are to be selected for diameters of 5mm Cable sizes are to be selected according to DIN ISO 0100 IEC 364 or National Regulations D Straight Receptacle Air Conditioning Scroll Compressors PFJ TF5 TFD TW TMM Protection PFJ TF5 TFD TW Protection PH ee a zoz wo a aaa e zek ww wo ee o aoo aask sco __ reze eelo zak a ecje zoze see oje awm e a ee a ea e E zsz ec a zsak m o zs n ee a E a A Flag Receptacle B Ring Tongue PFJ TF5 TFD TW Protection PFJ TF5 TFD TW Protection A ET e A eer z2 ab o amo oo S a ee ee ee zsak zamazane ecje zsm zave Be ZHooKve m ZH13 18KVE ZH24 48KVE JBC A Tab 3 Cable connectors Note For the Earthing connection for these compressors use a B Ring Tongue
4. 3 Since there is a 50 50 chance of connecting power in such a way as to cause rotation in the reverse direction it is important to include notices and instructions in appropriate locations on the equipment to ensure proper rotation direction is achieved when the system is installed and operated The correct direction of rotation can be confirmed by observing that the discharge pressure rises and the suction pressure falls when the compressor is operated Reverse rotation results in a sound level above that with correct rotation direction as well as substantially reduced current draw compared to tabulated values and after several minutes of operation the compressors internal protector will trip All three phase compressors are wired identically internally As a result once the correct phasing is determined for a specific system or installation connecting properly phased power leads to the same terminals should maintain proper rotation direction 7 Power and Control Circuits L1 N Donya decuit Motor protection module B1 Room thermostat F1 Fuse F3 H P switch F4 L P switch K1 Contactor R2 Crankcase heater S1 Auxillary switch Y5 Solenoid valve for refrigerant injection Fig 6 Refrigeration Scroll Control Circuit Li N Conto dreul 1 Fig 5 Power Circuit Three Phase Motor protection module B1 Room thermostat F1 Fuse F3 H P switch F4 L P switch K1 Contactor
5. AL BLOCK VERS BORNES DBE SEE SYSIEM BRANCHMENT DES BOUNES MOTEUR ZUR BELEGUNG N UTILISER QUE DES CONDUCTEURS EN CUIVRE DER MOTOR KLEMMEN UTILIER UNE TEMPERATURE ED 75 C POUR DETERMINER LA SECTION DES CABLES POUR LE COURANT MAXIMUM NOTE EMPLOYER CET EQUIPEMENT SEULEMENT SUR SYSTEME MIS A LA TERRE PROTECTION PRIMALRE MONOPHASEE FOURNIE SOLID STATE MODULE HAS 30 MINUTES LE MODULE DU DISPOSITIF DE PROTECTION ET LE CHAUFFE CARTER TIME DELAY BEFORE RESET IN EVENT FACULTATIF DOIVENT ETRE BRANCHES A LA TENSION NOMINALE OF PROTECTOR TRIP APPROPRIEE LE TYPE ET LES CARACTERISTIQUES NOMINALES DU DISPOSITIF DE PROTECTION CONTRE LES SURINTENSITES DOIVENT ETRE CONFORMES AUX NOTE EXIGENCES DES POUVOIRS DE REGLEMENTATION VISANT LE PRODUIT FINI EN CAS DE DECLENCHEMENT DU MODULE SE EEE DE PROTECTION LE REARMEMENT EST RETARDE ZUR BESTIMMUNG DES LEITERQUERSCHNITTS MUESSEN KABEL VERWENDET WERDEN A 30 MINUTES DIE FUER EINE BELASTUNG VON HUECHSTENS 75 C ZUGELASSEN SIND GO ANE AGE NUR MIT ERDUNG VERWENDEN NOTIZ SCHUTZ BEI PHASENAUSFALL AUF DER PRIMAERSEITE IST GEWAEHRLEISTET SCHUTZGERAET UND KURBELGEHAEUSEHEIZER FALLS VORHANDEN MOTORSCHUTZGERAET HAT EINE DUERFEN NUR MIT NENNSPANNUNG BETRIEBEN WERDEN ZEITVERZOEGERUNG VON 30 MINUTEN ZUM NENNLEISTUNG UND TYP DES UEBERSTROMSCHUTZSCHALTERS MUESSEN RUECKSCHAL TEN IN UEBEREINSTIMMUNG MIT ZUTREFFENDEN VORSCHRIFTEN SEIN BITTE TYPENSCHILD BEACHTEN 8 11 A Copeland Technical Info
6. Copeland Date of last update Jan 04 Technical Information EMERSON Climate Technologies Ref C7 9 1 0703 0104 E Application Engineering Europe MOTORS FOR COPELAND SCROLL COMPRESSORS Built in Motors for Scroll Refrigerant Compressors The electric motors integrated in the compressor shell have been designed especially for use in refrigerant compressors As they are subject to various loads in the application area of the compressor and come into contact with refrigerant and refrigerant machine oil high grade and highly resistant insulation materials have been used The motor insulation material for scroll compressors models is shown in the table bellow Air conditioning ZR18K4E to ZR81KCE ZR94KCE to ZR190KCE ZP23KCE to ZP182KCE ZBH30KJE to ZBH45KJE ZBHV45KJE ZRH49KJE to ZRH72KJE ZRHV72KJE Refrigeration ZFO6K4E to ZF18K4E ZFI3SKVE ZF18KV4E ZB15K4E to ZB45K4E ZS15K4E to ZS45K4E ZO34K3E to ZO104K3E ZBD30KCE ZBD45KCE ZFD18KVE Heat pump ZH15K4E to ZH45K4E ZHOOKVE to ZH18KVE ZRD42KCE to ZRD125KCE ZPD61KCE to ZPD81KCE ZR90K3E to ZR380KCE ZP235KCE to ZP385KCE ZHS6K4E to ZH11M4E ZH24KVE to ZH48KVE H ZF24K4E to ZF48K4E ZF24KVE to ZF48KVE ZB56K4E to ZB220KCE ZS56K4E to ZS11M4E All model ranges relate to VDE 0530 DIN 57530 IEC 34 18 1 EN 0530 All motors are adapted to each specific optimum application area so that the compressor is highly effective when using full or part load
7. ED CRANKCASE HEATER WHEN APPLIED MUST BE CONNECTED ONLY TO ITS RATED VOLTAGE OVERCURRENT PROTECTION DEVICE RATING AND TYPE MUST BE IN ACCORDANCE WITH REGULATORY AGENCY END PRODUCT APPROVALS SEE SYSTEM NAMEPLATE TO CORRECT IMPROPER MOTOR ROTATION SWITCH ANY TWO SUPPLY LINES MO TOR WINDING CONNECT ION 2 44 O52 119 00 10 2 5 6 5 HP ZR61KC E to ZR81KC E ZS30K4E to ZS45KCE ZB30KCE to ZB45KCE ZF13K4E to ZF18K4E ZF13K4E ECO to ZF18K4E ECO All compressors motor codes TFD amp TF5 USE COPPER CONDUCTORS ONLY USE THIS FQUIPMENT ON A GROUNDED SYSTEM ONLY USE E WIRE FOR AMPACITY INTERNAL MOTOR PROTECT 1 ALLOW TIME FOR RESET PRIMARY SINGLE PHASE FAILURE PROTECTION 1 PROVIDED CRANKCASE HEATER WHEN APPLIED MUST BE CONNECTED ONLY Ta ITS FATED VOLTAGE OVERCURRENT PROTECTION DEVICE RATING ANDO TYPE MUST BE IN ACCORDANCE WITH REGULATORY AGENCY END PRODUCT APPROWALS SEE SYSTEM NAMEPLATE TO CORRECT IMPROPER MOTOR ROTATION SWITCH ANY TWO SUPPLY LINES MIO TOR WINDING CONNECTION 0 96 O52 0880 O00 10 11 Copeland Technical Information EMERSON C7 9 1 0703 01 04 E Climate Technologies 11 Copeland Horizontal Scroll Compressor ZFHO9K4E to ZFH18K4E ZBH21K4E to ZBH45K4E ZSH21K4E to ZSH45K4E motor codes TFD amp TF5
8. LEISTUNG UND TYP DES UBERSTROMSCHUTZSCHALTERS M SSEN IN UBEREINSTIMMUNG MIT ZUTREFFENDEN VORSCHRIFTEN SEIN BITTE TYPEXSCHILD BEACHTEN 6 02 052 0953 00 7 11 A Copeland Technical Information EMERSON C7 9 1 0703 0104 E Climate Technologies Refrigeration Scroll Compressor Wiring Diagrams 9 3 7 5 15 HP ZS56K4E to ZS11M4E ZB56K4E to ZB11M4E ZF24K4E to ZF48K4E ZF24K4E ECO to ZF40K4E ECO All compressors motor codes TWD TW7 TWE TWC amp TWR FOR USE WITH KRIWAN MOTOR WINDING SCY CPHASE SENSING CONNECT IONS MODULE ONLY BORNES DES ENROULEMENTS DU INTERNAL THERMAL 5 MOTEUR SENSORS ANSCHLUSS CAPTEURS THERMIQUES DER MOTORWICKLUNGEN INTERNES INTERNE TEMPERATURSENSOREN FOR USE WITH KRIWAN SCY PHASE SENSING MODULE ONLY USE COPPER CONDUCTORS ONLY USE A TEMPERATURE OF 75 C WHEN DETERMINING CROSS SECTION OF LEAD FOR MAX CURRENT USE THIS EQUIPMENT ON A GROUNDED SYSTEM ONLY PROTECTOR MODULE VOLTAGE TENSION DU MODULE DU DISPOSITIF PRIMARY SINGLE PHASE FAILURE PROTECTION IS PROVIDED DE PROTECT ION ANSCHLUSSPANNUNG DES SCHUTZGERAETES PROTECTOR MODULE AND OPTIONAL CRANKCASE HEATER MUST TO CONTROL CIRCUIT VERS LE CIRCUIT DE BE CONNECTED ONLY TO THEIR RATED VOLTAGE COMMANDE ZUM STEVERSTROMKREIS OVERCURRENT PROTECTION DEVICE RATING AND TYPE MUST ee Week BE IN ACCORDANCE WITH REGULATION AND PRODUCT APPROVALS FOR KAR IWAN PARSE SEN TN MORILE ONIY TO MOTOR TERMIN
9. T ETRE BRANCHES A LA TENSION NOMINALE APPROPR IEE LE TYPE ET LES CARACTERISTIQUES NOMINALES DU DISPOSITIF DE PROTECTION CONTRE LES SURINTENSITES DOIVENT ETRE CONFORMES AUX EXIGENCES DES POUVOIRS DE REGLEMENTATION VISANT LE PRODUIT FINI VOIR LA PLAQUE SIGNALETIQUE ANLAGE NUR MIT ERDUNG VERWENDE SCHUTZ BEI PHASENAUSFALL AUF DER PRIMAERSEITE IST GEW AEHRLEISTET SCHUTZGERAET UND KURBELGEHAEUSEHEIZER FALLS VORHANDEN DUERFEN NUR MIT NENNSPANNUNG BETRIEBEN WERDEN NENNLE ISTUNG UND TYP DES UEBERSTROMSCHUTZSCHALTERS MUESSEN IN UEBEREISTIMMUNG MIT ZUTREFFENDEN VORSCHRIFTEN SEIN BITTE TYPENSCHILD BEACHTEN 052 1201 00 ZR250KC E amp ZR380KC E motor codes TWC TWD amp TW7 gt MOTOR WINDING CONNECTIONS BORNES DES ENROULEMENTS DU MOTEUR ANSCHLUSS DER MOTORWICKLUNGEN SYMBOLS SYMBOLES SYMBOL os THERMAL SENSORS CAPTEURS THERMIQUES ITEMPERATURSENSOREN 1 PROTECTOR MODULE VOLTAGE TENSION DU MODULE DISPOSITIF DE PROTECTION ANSCHLUSSPANNUNG DES SCHUTZGERATES TO CONTROL CIRCUIT VERS LE CIRCUIT DE COMMANDE ZUM STEUERSTROMKRE WHEN CHECKING SOLID STATE MODULE DO NOT SHORT ACROSS SI AND S2 SENSOR TERMINALS MODULE HAS 30 MINUTES TIME DELAY BEFORE RESET IN EVENT OF PROTECTOR TRIP LORS DE LA VERTIFICATION DU MODULE ELECTRONIQUE EN CAS DECLENCHEMENT DU MODULE DISPOSITIF DE PROTECTION LE REARMEMENT EST RETARDE A 30 MINUTES BE DIE SENSORANSCHLUSSE 5 UND 52 DURFEN NICHT UBERBUCKT WERDEN WENN DAS SCHUZS
10. YSTEM ASSCHALTET HAT DAS SCHUTZGERAT EINE ZEITVERZOGERUNG YON 30 MINUTEN ZUM RUCKSCHALTEN PRUFUNG DES MOTORSCHUTZGERATES L S2 USE COPPER CONDUCTORS ONLY USE MINIMUM 75 C WIRE FOR AMPACITY DETERMINATION USE THIS EQUIPMENT ON A GROUNDED SYSTEM ONLY PRIMARY SINGLE PHASE FAILURE PROTECTION IS PROVIDED PROTECTOR MODULE AND OPTIONAL CRANKCASE HEATER MUST 8E CONNECTED ONLY TO THEIR RATED VOLTAGE OVERCURRENT PROTECTION DEVICE RATING AND TYPE MUST BE IN ACCORDANCE WITH REGULATORY AGENCY END PRODUCT APPROVALS SEE SYSTEM NAMEPLATE N UTILISER QUE DES CONDUCTEURS EN CUIVRE UTILISER UN FIL D AU MOINS 75 C POUR DETERMINER LE COURANT ADMISSIBLE EMPLOYER CET EQUIPEMENT SEULEMENT SUR SYSTEME MIS A LA TERRE PROTECTION PRIMAIRE MONOPHASE FOURNIE LE MODULE DU DISPOSITIF DE PROTECTION ET LE CHAUFFE CARTER eg DOIVENT ETRE BRANCHES A LA TENSION NOMINALE LE TYPE ET LES CARACTERISTIQUES NOMINALES DU DISPOSITIF DE PROTECTION CONTRE LE SURINTENSITIES DOIVENT ETRECONFORMES AUX EXIGENCES DES POUVOIRS DE REGLEMENTATION VISANT LE PRODUIT FINI VOIR LA PLAQUE SIGNALETIGQUE NUR KUPFERLEITUNGEN VERWENDEN ZUR BESTIMMUNG DES BETRIEBSSTROWES MUSSEN KABEL VERWNDET WERDEN DIE FUR EINE BELASTUNG YON MINDETENS 75 C GEEIGNET SIND ANGLAGE NUR MIT ERDUNG VERWENDEN SCHUTZ BE PHASENAUSFALL AUF DER PRIMARSEITE IST GEWAHRLEISTET SCHUTZGERAT UND KURBELGEHAUSEHEIZER FALLS VORHANDEN D RFEN NUR MIT NENNSPANNUNG BETRIEBEN WERDEN NENN
11. connection 6 11 Copelanct Technical Information EMERSON C7 9 1 0703 0104 E Climate Technologies 9 Air Conditioning Scroll Compressor Wiring Diagrams 9 1 7 5 15 HP ZR90K3 E to ZR19M3 E motor codes TWD TW7 TWE TWC TWR amp TW PROTECTOR MODULE VOLTAGE TENSION DU MODULE DU DISPOSITIF DE PROTECTION ANSCHLUSSPANNUNG DES SCHUTZGERAETES TO CONTROL CIRCUIT VERS LE CIRCUIT DE COMMANDE ZUM STEUERSTROMKREIS NOTE SOLID STATE MODULE HAS 30 MINUTES TIME DELAY BEFORE RESET IN EVENT OF PROTECTOR TRIP NOTE EN CAS DE DE DECLENCHEMENT DU MODULE DE PROTECTION LE REARMEMENT EST RETARDE DE 30 MINUTES NOT IZ MOTORSCHUTZGERAET HAT EINE ZEITVERZOEGERUNG VON 30 MINUTEN ZUM RUECKSCHALTEN 9 2 20 30 HP MOTOR WINDING CONNECT IONS 2 BORNES DES ENROULEMENTS DU MOTEUR ANSCHLUSS DER MOTORW CKLUNGEN INTERNAL THERMAL SENSORS CAPTEURS THERMIQUES INTERNES INTERNE TEMPERATURSENSOREN USE THIS EQUIPMENT ON A GROUNDED SYSTEN ONLY PRIMARY SINGLE PHASE FAILURE PROTECTION IS PROVIDED PROTECTOR MODULE AND OPTIONAL CRANKCASE HEATER MUST BE CONNECTED ONLY TO THEIR RATED VOLTAGE OVERCURRENT PROTECTION DEVICE RATING AND TYPE MUST BE IN ACCORDANCE WITH REGULATION AND PRODUCT APPROVALS SEE SYSTEM NAMEPLATE EMPLOYER CET EQUIPEMENT SEULEMENT SUR SYSTEME MIS A LA TERRE PROTECTION PRIMAIRE MONOPHASEE FOURNIE LE MODULE DU DISPOSITIF DE PROTECTION ET LE CHAUFFE CARTER FACULMATIF DOIVEN
12. l compressor pressures are always balanced at start up low voltage starting characteristics are excellent for Scroll compressors 6 Electrical Installation Single Phase Fusite Three Phase Fusite Fig 1 Fig 2 Single phase compressors Fig 1 are connected to the common C start S and run R connections Fusite connections are marked as in figure 1 single phase and figure 2 three phase Recommended wiring diagrams are shown in figures 4 and 5 Fig 3 E 1 11 00 Legend to Fig 3 Motor Internal inherent motor protection Terminal box Lead connection Earthing connection Power supply Run capacitor optional Start capacitor optional Relay optional O ONO Independently from the internal motor protection motor protection devices such as circuit breakers and fuses F6 8 have to be installed before the compressor as shown in figures 3 and 4 Selection of fuses has to be carried out according to VDE 0635 or DIN 57635 or IEC 269 1 or EN60 269 1 4 11 fCopelant Technical Information A S EMERSON C7 9 1 0703 0104 E Climate Technologies Scroll compressors like several other types of compressors will only compress in one rotational direction Direction of rotation is not an issue with single phase compressors since they will always start and run in the proper direction Three phase compressors will rotate in either direction depending upon phasing of the power to L1 L2 and L
13. pressor nameplates as opposed to one single nominal voltage Copeland Scroll compressors have a voltage tolerance of 10 Example Compressor model ZR19MSE TWD Nominal voltage range according to the nameplate 380 420V 3 50 460V 3 60 Voltage tolerance of 10 Voltage range a From 380V 10 342V to 420V 10 462V at 50 Hz b At 460V 10 414V to 460V 10 506V at 60 Hz The compressor can be put into full operation within the specified load limits throughout this voltage range 3 2 Frequency Copeland Scroll compressors are available for 50 Hz and or 60 Hz voltage supply The use of a 50 Hz single or three phase motor with 60 Hz and vice versa is possible In this instance the following calculation factors need to be considered PB OH2z gt 60 Hz 60 Hz gt 50 Hz Refrigeration Capacity 2 Power Input Motor Codes amp Current Amps Factors at 50Hz gt Motor Codes amp Current Amps Factors at 60Hz ese omc 2 v 7z 08 w7 380360 380 380 420350 400 i Table 2 Calculation Factors 380 400 4 Brief Power Interruptions With single phase Scroll compressors built before May 1995 serial no 95E brief power interruptions of less than 1 2 second may result in powered reverse rotation This occurs as a result of the high pressure discharge gas expanding backwards through the scrolls on power interruption causing the scroll to orbit in the rever
14. rmation EMERSON C7 9 1 0703 0104 E Climate Technologies Single Phase Moulded cover wiring diagram 9 4 1 8 4HP ZR22K3 E to ZR49K3 E amp ZB19KCE to ZB26KCE motor code PFJ USE COPPER CONDUCTORS OHLY USE THIS EQUIPMENT CN A GROUNDED SYSTEM ONLY USE MINIMUM TS WIRE FOR AMPACITY DETERMINATION INTERNAL MOTOR PROTECT GN ALLOW TIME FOR RESET OVERCURRENT PROTECT ee aed RATING AND TYPE MUST GE vf ACCORDANCE WITH REGULATORY wee As ae NAMEPLATE 9 5 5 5 HP ZB42KCE motor code PFJ USE COPPER CONDUCTORS ONLY USE THIS EQUIPMENT GH A GROUNDED SYSTEM ONLY USE MINIMUM T5 C WIRE FOR AMPACITY al DETERMINATION INTERHAL MOTOR PROTECT ION 3 ALLOW TIME FOR RESET OVERCURRENT PROTECTION DEVICE RATING AND TYPE MUST BE IN ACCORDANCE WITH REGULATORY AGENCY END PRODUCT APPROYALS SEE S7STEW NAMEPLATE 9 11 Copeland Technical Information EMERSON C7 9 1 0703 0104 E Climate Technologies 10 Copeland Scroll Compressor Three Phase 10 1 1 8 4HP ZR22K3 E to ZR49K3 E ZS21K4E to ZS26K4E ZB15KCE to ZB26KCE ZFO9K4E to ZF11K4E ZFO9K4E ECO to ZF11K4E ECO ZR61KSE All compressors motor codes TFD TF5 amp TF USE COPPER CONDUCTORS ONLY USE THIS EQUIPMENT ON A GROUNDED SYSTEM ONLY USE MINIMUM 7S C WIRE FOR AMPACITY DETERMINATION INTERNAL MOTOR PROTECTION ALLOW TIME FOR RESET PRIMARY SINGLE PHASE FAILURE PROTECTION IS PROVID
15. se direction When power is reapplied while reverse rotation is occurring the compressor may continue to run in the reverse direction for several minutes until the compressor s internal protector trips This has no effect on durability When the protector resets the compressor will start and run normally To avoid the loss of cooling resulting from reverse rotation Copeland strongly encourages the use of an electronic control which can sense brief power interruptions and will lock the compressor out of operation for five minutes This control could be incorporated with the other system controls such as defrost or thermostat or be a stand alone control Functional specifications for this control are the following Timer opens 1 electrical cycle 0 02 sec at 50 Hz operation after power is removed and closes 5 minutes 20 delayed whether power is restored or not No such device is required on three phase models 3 11 amp Copeland Technical Information EMERSON C7 9 1 0703 0104 E Climate Technologies 5 Starting During the very brief start up a short metallic sound is audible resulting from initial contacting of the spirals and is normal No start assist devices are required for single phase compressors even if a system utilizes non bleed expansion valves Due to the design of the Copland Scroll the internal compression components always start unloaded even if system pressures are not balanced In addition since interna
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