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Electrical Maintenance (Rev. 04/03)
63
CAUTION: If the electric motor is being rewound, it must be rewound to the factory specifications because this
special application requires the phases to be split.
Full Load Current Test—Used to check the overall performance of the phase conversion system.
Use an inductive ammeter to check the current in motor leads 1 and 7, 3 and 9, and 2 and 8. The wires should have the follow-
ing currents:
Leads 1 and 7 together—8 to 18 amps
Leads 3 and 9 together—10 to 14 amps
Leads 2 and 8 together—9 to 14 amps
The three motor windings will exhibit a slight imbalance of currents. A difference of as much as 6 amps is possible.
The currents through L1 and L2 can be as high as 85 amps while starting, and as high as 23 amps when running at normal
speed in high ambient temperatures. High suction pressure settings can cause high current values.
Parts List for the KD-II Single-Phase Electric Motor System
Quantity
Description
Part Number
1
Electric Motor
104-466
1
Electric Motor Pulley
77-1980
1
Motor Contactor
44-2853
1
Overload Relay
44-6662
1
Current Relay
44-8755
1
Motor Start Relay
44-5837
1
Motor Start Contactor
44-2853
1
Transformer
44-8756
2
Start Capacitors
44-8758
2
Run Capacitors
44-8757
1
Filter Capacitor
44-8759
2
Run Capacitor Resistors
44-8760
2
Start Capacitor Resistors
44-8761
Summary of Contents for KD-II SR
Page 4: ......
Page 8: ......
Page 13: ...Safety Precautions Rev 04 03 v AEA40...
Page 14: ...Safety Precautions Rev 04 03 vi AEA38...
Page 33: ...Unit Description Rev 04 03 19 1 Evaporator 2 Access Door Rear View Curbside KD II SR 1 2 AEA38...
Page 37: ...Unit Description Rev 04 03 23 Power Receptacle Box KD II SR 50 AEA42...
Page 58: ...Remote Control Panel Features Rev 04 03 44...
Page 112: ...Refrigeration Maintenance Rev 04 03 98...
Page 120: ...106...
Page 146: ...132...
Page 156: ...142...
Page 162: ...148...
Page 170: ...156...
Page 172: ...158...
Page 173: ...159 KD II 30 Schematic Diagram Page 1 of 2...
Page 174: ...160 KD II 30 Schematic Diagram Page 2 of 2...
Page 175: ...161 KD II 30 Wiring Diagram Page 1 of 2...
Page 176: ...162 KD II 30 Wiring Diagram Page 2 of 2...
Page 177: ...163 KD II 50 Schematic Diagram Page 1 of 2...
Page 178: ...164 KD II 50 Schematic Diagram Page 2 of 2...
Page 179: ...165 KD II 50 Wiring Diagram Page 1 of 2...
Page 180: ...166 KD II 50 Wiring Diagram Page 2 of 2...
Page 181: ...167 KD II 50 SR 230 1 60 Wiring Diagram Page 1 of 2...
Page 182: ...168 KD II 50 SR 230 1 60 Wiring Diagram Page 2 of 2...