air cooled chiller

Pre-Operation Checklist

Inspect the chiller for any physical damage.

Check the refrigerant levels and ensure they are within specified limits.

Verify that all electrical connections are secure.

Ensure all safety guards and covers are in place.

Check for any unusual noises or vibrations during startup.

Here are some additional steps that could be included in the Pre-Operation Checklist for a new air-cooled chiller

Verify that the installation site is clear of debris and obstructions

Ensure proper airflow around the chiller unit and that intake/exhaust vents are unobstructed

Check the condition of the insulation on refrigerant lines and ensure there are no leaks

Confirm that all valves (inlet, outlet, service) are in the correct position for operation

Inspect and clean the air filters to ensure optimal airflow

Verify that the control system is correctly configured and calibrated

Check the power supply to ensure it meets the chiller's voltage and phase requirements

Inspect and test safety devices, such as pressure relief valves and emergency shut-off switches

Ensure that the chiller's settings (temperature, pressure) are within the manufacturer's specifications

Review the operating manual and ensure all operational procedures are understood by the personnel involved

Operation Checklist

Monitor the temperature and pressure gauges for normal operating ranges.

Listen for any abnormal sounds during operation.

Check the operation of the fan and motor.

Inspect the airflow around the chiller for any obstructions.

Ensure that the control system is functioning correctly.

Here are some additional steps that could be included in the Operation Checklist section of a new air-cooled chiller checklist

Verify that all safety interlocks are engaged and functioning

Check for any refrigerant leaks around fittings and connections

Monitor the chiller's power consumption and compare it to expected values

Ensure that the chiller's discharge and suction temperatures are within specified limits

Inspect the condenser coils for cleanliness and proper airflow

Confirm that the thermal expansion valve (TXV) is operating correctly

Evaluate the operation of the expansion valve and ensure it adjusts appropriately

Make sure the control panel displays are functioning and readable

Review alarm history and ensure there are no active alarms or alerts

Check the water flow rate through the evaporator and condenser to ensure it meets specifications

Monitor the ambient temperature and humidity levels affecting chiller performance

Inspect the electrical connections for signs of wear, overheating, or corrosion

Ensure that all access panels and safety covers are secured during operation

Validate that the chiller is starting and stopping as per the control settings

Record operational data for future reference and performance analysis

Maintenance Checklist

Clean the condenser coils to ensure efficient heat exchange.

Check and replace air filters as needed.

Inspect and tighten all electrical connections.

Lubricate moving parts according to the manufacturer's specifications.

Review the maintenance logs for any recurring issues.

Post-Operation Checklist

Turn off the chiller and ensure all systems are shut down properly.

Inspect the unit for any leaks or signs of wear.

Document any issues or maintenance performed during the operation.

Review performance data and make adjustments if necessary.

Ensure the area around the chiller is clean and free of debris.