Check control panel display for any alarm signals
Check that the water outlet temperature is within the prescribed interval.
Clean the water filter. The water filter should be cleaned one week after the first start-up of the unit.
Check that the liquid sight glass is always full or shows a minimum passage of bubbles when the compressor is running.
Carry out visual inspection of refrigerant circuit, looking out for any deterioration of the piping or any traces of oil which might indicate a refrigerant leak.
Check the condition and safety of piping connections
Check the condition and safety of wiring and electrical connections.
Make sure that the fan starts automatically. Thoroughly clean the fins of the condenser with soft brush and/or jet of clean compressed air. Check that the grilles of the dryer are free from dirt and any other obstructions.
Clean condenser fins with a mild detergent.
Source: Ascend Illinois (Community Member)