26
D.
Circuit breaker trips when the Vacuum Pump is to be energized
Possible Cause:
Extension cord under size.
Solution:
Use a extension cord minimum of 14ga
Possible Cause:
Vacuum pump oil is contaminated and/or cold causing the vacuum pump start windings to kick on and off
upon start up.
Solution:
Replace vacuum pump oil. Use CPS Vacuum Pump oil. It is specially formulated for cold weather conditions.
Possible Cause:
Vacuum pump voltage switch is in the wrong position.
Solution:
Set vacuum pump voltage switch to the correct position
.
Possible Cause:
Vacuum pump mechanism is locked up or bad motor windings.
Solution:
Replace vacuum pump.
E. Compressor will not start when the compressor relay light on the Relay PCB is
energized
Danger:
Only a qualified service technician should service this equipment. An Electrical Shock hazard is present. It
will be necessary to operate this unit with the front cover opened. Please use extreme caution when live power is applied
to the unit.
Possible Cause:
Compressor start components or Compressor motor windings have failed.
Solution:
Check the compressor power leads to see if voltage exists. Unit should be turn on. If the unit goes into auto air purge,
after the air purge the compressor is to run. Check the Relay PCB for the compressor relay to be
energized. If voltage is present, the problem can be narrowed down to the overload, compressor motor windings, compressor
start relay and capacitor. If voltage does not exist on the compressor power leads, check Relay on PCB. The contact points on
this relay should be closed when powered up unless a tank full or HP condition exists. Also check for loose wires.
F. Vacuum Pump will not start when the Evacuation relay light on the Relay PCB is
energized
Possible Cause:
Vacuum pump power cord is not plugged in.
Solution:
Check the power cord connection to the vacuum pump IEC inlet.
Possible Cause:
Vacuum pump power switch (located on the Vacuum Pump) is not turn to the ON position.
Solution:
Turn vacuum pump switch ON.
Possible Cause:
Fuse in Vacuum Pump IEC inlet has blown. (on older pumps date code early 2014)
Solution:
Replace Fuse. Note the holder contains one extra fuse.
Possible Cause:
Open Vacuum Pump motor windings.
Solution:
Check for continuity between L1 and L2 of the IEC inlet. If open, the motor windings are bad. Replace vacuum
pump.
Summary of Contents for FX1234
Page 1: ...1 FX Series Service Manual Models FX134 FX1234 FX3030 CPS AUTOMOTIVE RECOVER RECYCLE RECHARGE ...
Page 14: ...14 FX3030 PUMP DOWN ...
Page 15: ...15 Hose Flush High Voltage Compressor ...
Page 47: ...47 1 FX134A FX1234 FX3030 Series Refrigeration Schematic ...
Page 48: ...48 2 FX134A FX1234 FX3030 Series Electrical Schematic ...