2.Prepare to add oil:
a.Use a new, sealed oil can and a manual oil pump. The pump hose must be sized for 1/4 in flare fittings and must include a valve depressor at its end, which will open the valve on the Schrader service port of the compressor.
b.At a minimum, use a quality POE oil with a viscosity of 32 cst, 160 sus at 40°C (104°F). Suggested oils: Danfoss Maneurop 160 PZ Polyolesteroil, the approved type of oil for this equipment. Approved alternative oil types:
•CPI (Lubrizol) reference:
•ICI_UNIQUEMA reference: Emkarate RL32H or equivalent
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
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.
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 compressor due to oil slugging.
–Excessive oil carryover.
–Loss of evaporator performance due to oil level
Note: Dispose of the oil waste appropriately.
InRow RD 10 kW Air Cooled Operation and Maintenance | 11 |