APC ACRD500 Installation Manual download pdf (Page 21)

13InRow RD Operation and Maintenance

3. Purge the pump and hose:

a. Ensure that the oil pump is clean. Insert the pump in the oil container and make sure that

the container is open to the atmosphere for as short a period of time as possible. When

available, use a plug adaptor kit to further reduce the exposure of the oil to the atmosphere.

b. Bleed all air from the pump and hose with a few strokes of the pump. Purging the pump

removes the moisture-saturated oil left inside the hose from previous usage.

c. Connect the hose to the Schrader service port of the compressor immediately after purging

to avoid moisture contamination.

4. While the equipment is running, charge the oil through the suction service port. Pump the oil very

slowly.

5. Allow the compressor to run at full capacity for at least one hour after charging the oil, then re-

check the oil level in the sight glass. The level should be between 1/4 and 3/4 full, or within the

limit shown on the oil level sticker.

Caution: Be careful not to charge more oil than is necessary. Excessive oil in the

system may cause system damage, including the following:

– Failure of valves and pistons due to oil slugging.

– Excessive oil carryover.

– Loss of evaporator performance due to oil level build-up in the low-pressure side

of the system.

Note: Dispose of the oil waste appropriately.

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APC ACRD500 Installation Manual Page 21