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6. MAINTENANCE
6.9 Cooling circuit
The following steps should be taken to maintain the evaporator and condenser coil of the
cooling circuit:
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The following steps should be taken to check the cooling circuit:
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If you are in doubt about the condition of the cooling circuit, stop the compressor at once to
avoid damage and call a cooling technician or the Dantherm service.
Check the coils for dust or dirt. If necessary, clean the aluminium fins with a soft brush
or a vacuum cleaner.
Straighten any bent slats using appropriate tools.
Check that the frost sensor is properly fixed in the evaporator coil.
Remove the air grill of the inspection door and run the tubes of your HP/LP
manometers through the opening. Now connect your manometers to the high- and
low-pressure side of the cooling circuit.
Close all inspection doors and start up the unit. Wait a few minutes and check the
LP/HP manometers. The HP gauge should show between 40-50 °C and the LP gauge
about 0-10°C, depending on the running and outside conditions.
Keep the unit running, open the right inspection door and check if the sight glass of
the refrigerant circuit is free of bubbles.
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