Daikin EUWA(*)100JX [114/145] Oil changing procedures

Troubleshooting ESIE97–02

3–26 Part 3 – Troubleshooting

4.5 Oil Changing Procedures

Oil draining When the oil has degraded or the moisture level becomes to high, the oil has to be drained.

An oil drain valve is foreseen at the lowest point on the oil receiver side and on the compressor suction

side.

After pump-down operation, the pressure has to be reduced further via a pump out unit to ± 0.2kg after

closing the compressor valves. This pressure will force the oil into a receptacle.

Oil charging After used oil has been drained, a fresh oil charge is required. This is normally the same amount as

was removed and is visually less than the initial charge, because a small part of the oil still remains in

some of the parts.

The equipment to charge is a vacuum pump and a charging line fitted with a shut-off valve. A pressure

gauge can be useful. The purpose is to get clean oil into a contaminent-free system. Therefore:

The oil container should only be opened before charging. Since ester oils are very hygrocopic, use

containers corresponding to the required oil charge quantity.

Oil filter cleaning The following procedure explains how to clean the oil filter:

Step Action

1 Pull a complete vacuum on the compressor before charging new oil.

2 Close the shut-off valve.

3 Stop the vacuum pump.

4 Connect the oil container via a charging hose to the oil charge valve.

5 Purge the oil charge hose and open the oil drain valve.

Step Action

1 Pump the unit down to ± 1.5 low pressure.

2 Drain the oil out of the oil separator section via the 3/8” valve.

3 Remove the remaining oil by unscrewing the large allen screw located under the oil fil-

ter.

4 Remove the oil filter using the 2 pressure-off openings provided in the oil filter cover.

The oil filter cover and the oil filter itself are one piece sealed to the compressor

body via an “O” ring.

5 Remove the filter cylinder from the flange.