Section 6 Troubleshooting; Checklist - Thermo Scientific EK45 Manuel D'installation

Section 6 Troubleshooting

Checklist

6-2
Cooler will not start
Check the controller for error codes, see Error Codes in this section.
Ensure the circuit protector is in the on ( I ) position.
Make sure supply voltage is connected and matches the cooler's nameplate
rating ±10%.
No display on controller
Cycle the circuit protector on the front of the cooler.
Inadequate temperature control
Verify the setpoint.
Check for ice build up on the cooling probe. A layer of ice will act as insulation
and reduce the cooling capacity. Ice build up is often an indication that the
cooling fluid needs replacing. Defrost the cooling probe and change the cooling
fluid.
Make sure the condenser is free of dust and debris.
Ensure cooler installation complies with the site requirements in Sections 2 and 3.
Make sure supply voltage matches the cooler's nameplate rating ±10%.
If the temperature continues to rise, make sure your application's heat load does
not exceed the rated specifications.
Check for high thermal gradients (e.g., the application load is being turned on
and off or rapidly changing).
Cooler shuts down
Ensure the circuit protector is in the on ( I ) position.
Check the controller for error codes.
Make sure supply voltage is connected and matches the cooler's nameplate
rating ±10%.
When the unit is shut off, wait approximately five minutes before restarting
This allows time for the refrigeration pressures to equalize. If the pressures are
not allowed to equalize, the compressor will short-cycle.
Please contact Thermo Fisher Scientific Sales Service and Customer Support if you
need any additional information, see inside cover for contact instructions.
Thermo Scientific