York Centrifugal Chiller YKJPJSP95CEGS

Perform chemical analysis of oil

Repair any leaks found immediately

Perform leak test with R134a compatible leak detector

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

Keep oil tightly capped until used to prevent moisture absorption

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

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

Have the pressure and temperature equalised between the condenser and evaporator?

Remove refrigerant charge when opening any part of the refrigerant system for repairs.

Isolate refrigerant in either the condenser or evaporator/compressor if equipped with optional valves.

Add only refrigerant vapour to the system until pressure is above freezing point of evaporator liquid.

Ensure system pressure is above 58.9 kPa for R134a to prevent freezing.

Prevent moisture laden air from entering the system during charging.

Make up a suitable charging connection from new copper tubing.

Purge the charging connection each time a new container of refrigerant is connected.

Change containers quickly to minimise refrigerant loss.

7.1.6 Annually (more often if necessary)

Recommendations for water treatment

Has a chemical analysis of the water been conducted?

Water treatment expert consultation notes