46
SK650-2
SKOPE Gen2: Single Door Chiller
4.6 Troubleshooting
Complaint
Possible Cause
Repair
8. Start capacitor
open, shorted
or blown.
Relay contact not opening
properly.
Clean contacts, or replace
relay if necessary.
Prolonged operation on start cycle
due to:
(a) Low voltage to unit.
(b) Improper relay.
(a) Determine reason and
correct.
(b) Replace relay.
Excessive short cycling.
Determine reason for short
cycling, and correct.
Improper capacitor.
Determine correct size and
replace.
9. Relay defective
or burned out.
Incorrect relay.
Check and replace.
Line voltage too high or too low.
Determine reason and correct.
Excessive short cycling.
Determine reason, and correct.
Relay being influenced by loose
vibrating mount.
Remount rigidly.
10. Suction line
frosted.
Evaporator fan not running.
Determine reason and correct.
Overcharge of refrigerant capillary
systems.
Correct charge.
11. Unit noisy.
Loose parts or mountings.
Find and tighten.
Tubing rattle.
Reform to be free of contact.
Bent fan blade causing vibration.
Replace blade.
Fan motor bearing worn.
Replace motor.
SERVICE INSTRUCTIONS
4
Table 8: Troubleshooting
Summary of Contents for SK650-2
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Page 47: ...47 SK650 2 SKOPE Gen2 Single Door Chiller Notes SERVICE INSTRUCTIONS 4 ...
Page 48: ...48 SK650 2 SKOPE Gen2 Single Door Chiller 5 1 Model SK650 2 Type V60BA WIRING DIAGRAMS 5 ...
Page 50: ...50 SK650 2 SKOPE Gen2 Single Door Chiller 5 2 Model SK650 2 Type V60BB WIRING DIAGRAM 5 ...