Daikin Water Chiller WSC100

Is the chiller subject to freezing temperatures?

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

Did you use dry air to force all water out of the condenser?

Did you remove the condenser heads?

Warning: Water left in the piping and vessels can rupture these parts if subjected to freezing temperature.

Did you circulate antifreeze through the water circuits?

Take measures to prevent the shutoff valve in the water supply line from being accidentally turned on.

Did you remove the pump drain plug in the water pump?

1) Re-sample after 500 hours of unit operation.

a) If content increases less than 10%, change oil and oil filter and re-sample at normal interval (usually annual).

b) If content increases between 11% and 24%, change oil and oil filter and re-sample after an additional 500 hours of operation.

c) If content increases more than 25%, inspect compressor for cause.

2) Re-sample after 500 hours of unit operation.

a) If content increases less than 10%, change filter-drier and re-sample at normal interval (usually annual).

b) If content increases between 11% and 24%, change filter-drier and re-sample after an additional 500 hours of operation.

c) If content increases more than 25%, monitor for a water leak.

Compare the compressor current draw to the nameplate RLA value. Normally, the actual current will be lower, since the nameplate rating represents full load operation.

Compare all pump and fan motor amperages with nameplate ratings.

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

Leak test with an electronic leak detector passed?

Water flow through the vessels maintained during the procedure?

Any leaks found in welded or brazed joints?

Was it necessary to replace a gasket?

If any 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.

Warning: This procedure requires trained personnel with PPE!

Daikin chillers are at positive pressure at all times and do not leak contaminated moist air into the refrigerant circuit, thereby eliminating the need for annual oil changes.

An annual laboratory oil check is recommended to check overall compressor condition.

Isolate the filter cavities. Close the oil discharge line service valve at the oil pump (at the filter on CE126).

Remove the filter cover; some foaming can occur but the check valve should limit leakage from other compressor cavities.

Remove the filter, replace with new element, and replace filter cover using a new gasket.

Reopen the valve in the pump discharge line and purge air from the oil filter cavity.

When machine is operated again, the oil level must be checked to determine if oil needs to be added to maintain the proper operating level.

Sign off on the oil filter replacement