Sterling 882.93092.00 Manual Do Utilizador
GP Series Portable Chillers
Chapter 6: Troubleshooting
41 of 73
Problem
Possible cause
Solution
Pump running in reverse.
Verify rotation; if running in reverse
rotation, reverse any two main power
leads. Re-verify for correct pump
rotation.
rotation, reverse any two main power
leads. Re-verify for correct pump
rotation.
Pump process pressure low (refer
to curves for normal pressure for
various pumps).
to curves for normal pressure for
various pumps).
Check for foreign matter.
Clean the system strainer.
Pump process pressure is too high.
Restricted water flow.
Check for partially closed valves etc.
Make sure that all lines are properly
sized.
Clean filters.
Make sure that all lines are properly
sized.
Clean filters.
Restricted condenser air flow.
Clean condenser.
Unit low on refrigerant.
Check the refrigerant charge by viewing
sight glass on liquid line upstream of the
expansion valve.
sight glass on liquid line upstream of the
expansion valve.
Compressor not operating
efficiently.
efficiently.
Call service.
Unit runs continuously, but not
enough cooling power
enough cooling power
.
Unit under-sized for application.
Call sales rep.