Daikin Water Chiller WCC113

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

Pressure Relief Valve Replacement

Current condenser designs use two relief valves separated by a three-way shutoff valve (one set). This three-way valve allows either relief valve to be shut off, but at no time can both be shut off.

In the event one of the relief valves are leaking in the two valve set, these procedures must be followed:

• If the valve closest to the valve stem is leaking, back seat the three-way valve all the way, closing the port to the leaking pressure relief valve. Remove and replace the faulty relief valve.

The three-way shutoff valve must remain either fully back seated or fully forward to normal operation. If the relief valve farthest from the valve stem is leaking, front seat the three-way valve and replace the relief valve as stated above.

• The refrigerant must be pumped down into the condenser before the evaporator relief valve can be removed.;

Is the chiller subject to freezing temperatures?

If yes, drain the condenser and chiller of all water.

Use dry air to force all water out of the condenser.

Ensure no water remains in the piping and vessels.

Consider forced circulation of antifreeze through the water circuits.

Have measures been taken to prevent the shutoff valve in the water supply line from being accidentally turned on?

If a cooling tower is used, has the water pump been drained and left open to prevent water accumulation?

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.

Warning: Only trained personnel should perform this procedure.

If the system is not operational, report the issue to the maintenance team and stop the procedure.

Is there any oil leak in the system?

If there is an oil leak, repair work is necessary.

Enter the amount of oil added to the system.

Upload a photo of the hand pump connected to the backseat port of the valve.

Note: The POE oils used with R-134a are hygoscopic. Avoid exposure to moisture (air).

Is the condition of the compressor oil satisfactory?