Thermo King KD-II SR, Manual

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Electrical Maintenance (Rev. 04/03)
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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