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Electrical Maintenance (Rev. 04/03)
55
The primary winding of the run transformer is connected to
L1A on one side and to L2A on the other side. A branch of
T3 passes through one of the secondary windings on the run
transformer and one of the run capacitors to become T3E,
which is connected to the third winding in one set of the
motor windings. Another branch of T3 passes through the
other secondary winding of the run transformer and the run
capacitor to become T3F, which is connected to the third
winding in the other set of motor windings. The run trans-
former and the run capacitors combine to provide a phase
shift and power needed to operate the motor at its normal
running speed.
Third Phase Connection While Running Normally
L1 and L2 supplies power to the third windings in
both sets of motor windings through the run
transformer and the run capacitors
The run transformer, run capacitors, and start capacitors are
located in a control box under the motor pedestal. These
components can be accessed by removing the motor and
pedestal assembly from the unit’s condenser frame. The
wiring harness connected to the motor is long enough to
allow the motor and pedestal assembly to be set beside the
unit and test run if necessary.
The current relay, motor start relay, motor start contactor,
and a test point strip are located in the unit’s main control
box. The test point strip is used to diagnose problems asso-
ciated with the run transformer, the run capacitors, and the
start capacitors.
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...