23
Cooling
PCB Connections
19. Maintenance
Warning: the unit must be electrically isolated before maintenance work is undertaken
The following routine maintenance is required:
Every 3-6 months
The condenser should be cleaned to ensure correct operation of the condensing unit. If the condenser coil is obstructed by dirt
or rubbish, the unit will experience high condensing temperatures which will result in higher running costs, loss of compressor
efficiency and, ultimately, overheating of the compressor and/or condenser fans.
Every 12 months
• Check security of fixings, especially the fan and motor mountings.
• Check refrigerant pipeline for damage and leaks.
• Check evaporator and condenser motors (fans should rotate freely).
• Check the tightness of the liquid and suction service valves.
When necessary
• For both the evaporator and condenser, clean the fins, guard and general casework. Care must be taken when cleaning the
fins to prevent damage. It is recommended that a soft brush and mild detergent solution be used.
• High-pressure spray washing of the unit must not be undertaken, as damage to fins, fin coatings and other components will
occur. Low pressure spray washing using specialist coil cleaning solutions is recommended.
Alarm Air Sensor Defrost
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