York Centrifugal Chiller YKAPAPQ35CCGS

7.1.5 Every 6 Months (or more often as required)

Change and inspect compressor oil filter element

Inspect for internal wearing of compressor parts

Is the unit shutting down on High Oil Temperature or Low Oil Pressure?

Examine oil filter element for aluminum particles

Are aluminum particles found in the oil filter?

Contact York Service Agent if aluminum particles continue to accumulate

Is VSOP Drive frequency 55 Hz or higher?

Perform chemical analysis of oil

Were all leaks repaired immediately?

Was the system charged before leak testing?

Perform leak test with R134a compatible leak detector

Check the refrigerant charge (See Refrigerant Charge Checking)

7.4.1 Checking The Refrigerant Charge

Record the refrigerant level after initial charging

Is the refrigerant level visible in the sight glass?

Ensure the system is shut down before checking and trimming the refrigerant charge

Verify that at least 4 hours have passed since the compressor and water pumps were stopped

Check graphic control centre (OptiView) displays.

Check for any signs of dirty or fouled condenser tubes.

Is the compressor in operation?

Enter the bearing oil pressure on the SYSTEM Screen.

Enter the oil level in the oil reservoir.

Is the operating oil level between the upper and lower sight glasses?

7.1.6 Annually (more often if necessary)

Evaporator and Condenser Inspection and Cleaning

7.5 Condenser and Evaporator Maintenance

Describe the water treatment plan

Has a chemical analysis of the water been conducted?

Record findings from the chemical analysis