York Centrifugal Chiller YKFQFTQ65CEGS

Perform chemical analysis of oil

Were any leaks found during the test?

Describe the repairs made for any leaks found

Charge the system with refrigerant

Perform leak test with R134a compatible leak detector

7.1.6 Annually (more often if necessary)

Inspect and service electrical components as necessary

Inspect all electrical controls for obvious malfunctions

Ensure factory settings of controls (operation and safety) are unchanged

Perform chemical analysis of system

Check for potential leak scenarios

Is refrigerant detected at the liquid head vents after shutdown?

Has system capacity and efficiency dropped sharply?

Immediate Actions for Leaking Tubes

Valve off evaporator and condenser from the water circuit

Drain evaporator and condenser immediately

Drain and purge refrigerant system with dry nitrogen

Check graphic control centre (OptiView) displays.

Is the compressor in operation?

Enter the bearing oil pressure from the SYSTEM Screen.

Enter the oil level in the oil reservoir.

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

Enter the entering condenser water pressure and temperature from the SYSTEM Screen.

Enter the leaving condenser water pressure and temperature from the SYSTEM Screen.

7.1.6 Annually (more often if necessary)

Drain and replace the oil in the compressor oil sump

Verify the nominal oil charge for the compressor is 75.7 litres of York 'K' oil

Ensure only York 'K' refrigeration oil is used in the centrifugal compressor

Check that the oil is kept tightly capped until used

Prepare the oil charging pump and connect to the oil charging valve