Daikin Centrifugal Compressor Water Chiller HSC076

Warning: Only fully qualified technicians must attempt service.

Power factory correction capacitors disconnected?

Terminal Check (Infrared temperature measurement)

Motor Cooling Filter Drier Pressure Drop

Enter the pressure drop reading

Warning: Do not use oxygen or a mixture of R-22 and air to build up pressure as an explosion can occur causing serious personal injury.

Enter the initial pressure of the system in psig

Enter the pressure after adding refrigerant in psig

Enter the pressure after adding dry nitrogen in psig

Did the electronic leak detector find any leaks?

If leaks are found in welded or brazed joints, or it is necessary to replace a gasket, relieve the test pressure in the system before proceeding.

Were any leaks found in welded or brazed joints?

Was it necessary to replace a gasket?

After making any necessary repair, the system must be evacuated as described in the following section.

Maintenance of the refrigerant cycle

Record the condenser water temperature

Record the chiller water temperature

Record the suction line temperature at the compressor

Calculate the suction superheat by subtracting the saturated temperature equivalent of the suction pressure from the suction line temperature

Clean Oil Cooler Strainer (water)

Oil filter change and compressor teardown and inspection should be done based on the results of the annual oil test performed by a company specializing in this type of test.

Enter the results of the oil test

Consult Daikin Service for recommendations.

Sign off on the lubrication system maintenance

Maintenance of the refrigerant cycle includes maintaining a log of the operating conditions, and checking that the unit has the proper oil and refrigerant charge.

The suction line temperature at the compressor should be taken at least once a month.