Flooded Type Water Cooled Screw Chiller Technical M
anual
66
4. Failure Detection of Electrical Parts
No.
Name of
Parts
Detection Methods
1
Compressor
1. After detecting with OHM range of multimeter, there is correct resistance
value (three-phase resistance value of compressor should be
approximately the same) among windings. Winding resistance to shell
resistance should be infinite.
2
Contactor
1
、
Movable contact should act flexibly without blocking after contactor is
manually pressed.
2
、
Contact of contactor shouldn’t be burnt out.
3
、
Coil should have resistance value below K-class, but shouldn’t be “0”
or infinite.
3
Sensor
1. Measure resistance value with multimeter and find out temperature by
referring to resistance table. The temperature should be the same as
the temperature at location of sensor.
2. Resistance value shouldn’t be “0” or infinite.
