Airedale International Air Conditioning Free-Cooling Chiller UCFC360DQ-12/2

Ensure all work is carried out by technically trained competent personnel

Isolate equipment to ensure no live electrical or moving parts are active

Check evaporator trace heating activation temperature

Check low ambient thermostat activation temperature

Are both the evaporator trace heating and low ambient thermostat set to activate at 4.0°C?

Inspect the unit for general wear and tear, treat metalwork.

Inspect pipe and pipework insulation.

Clean evaporator water strainer.

Clean condenser coils using detergent and stiff bristled brush. Avoid steam cleaning.

For heavy dirt on condenser coils, choose cleaning method.

Check against commissioning records

Control settings verified against commissioning records

Alarm log checked for unusual occurrences

Chilled water control maintains design temperature

Chilled water flow is within design limits of zero to plus 10%

Chilled water pump and flow switch operate efficiently

Operation of waterflow switch and pump interlock

Ensure all work is carried out by technically trained competent personnel

Isolate equipment to prevent electrical and mechanical hazards

Record the current operating hours of the compressor

Has the compressor reached 7,500 hours or 4 years of operation?

Inspect the condition of the compressor oil

Is the compressor oil in acceptable condition?

Describe any issues found with the compressor oil

Isolate the equipment before starting maintenance

Is the head pressure control maintained?

Enter the pressure relief indicator gauge reading

Check each circuit sight glass for dryness and bubbles