FTS MAXI-COOL, Operator'S Manual, Page: 59 / 66

Rev 007, 04/12 51
© SP Scientific 2012
Appendix
A
Appendix A: Troubleshooting
CAUTION! 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. Check all possible causes above
and if none of the solutions remedies the problem then
the pump motor is no good. Contact factory for a new
motor.
Unit not cooling
properly
Temperature setting above
fluid temperature
Adjust temperature setting to the proper setting
Viscosity of fluid is too high for
intended temperature range.
Change fluid.
Ambient temperature too high.
To meet specifications the room air temperature must
be 72°F/22°C. The capacity of the cooling system and
the maximum low temperature will degrade as the
temperature increases
Plumbing incorrectly connected
to process.
Check that "LIQUID OUT" port of system is connected
to inlet of system to be cooled, and that "LIQUID IN" is
connected to outlet of system to be cooled