Electrical Maintenance (Rev. 04/03)
62
Electric Motor Runs Hot or Loads the Diesel
Engine During Diesel Operation
Electric Motor Acting As An Induction
Alternator
Check the voltage at the overload relay, T1 to T2, T2 to T3, and
T3 to T1.
Check the voltage between T3E and T3F.
The voltage on any of the above pairs of wires should not
exceed 15 volts ac while the unit is running on diesel operation.
If the voltage on any of the above pairs of wires is between 500
and 700 volts ac, the electric motor is acting as an induction
alternator. To repair the unit, check the following
1. Check the T2 and T3 circuits through the motor contactor to
make sure they are open during diesel operation. / Replace
or repair the motor contactor as necessary.
2. Check the connections between the electric motor leads and
the Thermo King wiring in the connection box on the electric
motor. Compare these connections to those indicated in the
wiring diagrams and schematics. / Repair the wiring
connections as necessary.
3. Disconnect the electric motor leads from the Thermo King
wiring at the connection box on the electric motor. Check the
wiring in the electric motor with an ohmmeter to make sure
the wires have continuity and are labeled correctly according
to the wiring diagrams and schematics. / Repair as
necessary.
PROBLEM/PROBABLE CAUSE
TEST/SOLUTION
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...