SP Scientific ULTRA-COOL, Operator'S Manual, Page: 59 / 64

Rev 008, 01/12 51
© SP Scientific 2012
Appendix
A
Appendix A: Troubleshooting
NOTICE: ONLY QUALIFIED PERSONNEL SHOULD PERFORM MAINTENANCE ON THE
REFRIGERATION SYSTEM, AND ONLY EPA CERTIFIED TECHNICIANS SHOULD EVACUATE
OR CHARGE REFRIGERANTS.
Problem Possible Cause Solutions
Unit will not
start. Power is not connected properly. Have electrician check power connections.
Breaker at the wall is in the "off"
position. Turn breaker "on".
Fuse has blown. Have qualified person check and replace fuse.
Pump will not
start. Power is not connected properly. Have electrician check power connections.
Breaker at the wall is in the "off"
position. Turn breaker "on".
Pump is not primed. Prime pump.
Impeller jammed. Verify that motor is getting voltage and that the voltage
is correct. If the fluid freezes it will jam the pump
impeller.
Pump motor has overheated. The pump motor is provided with a thermal overload
protection. If it overheats, the pump will shut down; it
will restart when the motor has cooled down. This is
usually a result of the pump being overworked. Ensure
that the viscosity of the fluid being used remains <20
centistokes. Check solutions under "Fluid Flow is
Inadequate".
Pump motor has burned out. This is very unlikely. If all reasons listed above are not
the cause and the pump has voltage to it, the pump
motor is no good. Contact factory for a new motor.