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Section 5 • Maintenance/Service
Oil Draining
WARNING
Avoid skin contact with any liquid refrigerant or oil.
Wear rubber gloves and a face shield when working
with liquid refrigerant or oil. Failure to comply may
result in serious injury or death.
WARNING
When working with refrigerants, ensure there is
adequate ventilation and refrigerant vapor detectors
as per ASHRAE standards. Failure to comply may
result in serious injury or death.
WARNING
Do not drain oil from drain valve while the compressor
unit is running. Shutdown the unit and allow pressures
to equalize to suction pressure prior to draining.
Failure to comply may result in serious injury.
The compressor unit must be shut down prior to draining
due to high pressures in the oil system, see Compressor
Unit Isolation procedure.
Draining can be performed through the drain valve lo-
cated underneath the oil separator, see Figure 5-7.
Draining of the remote oil cooler can be performed at
the remote oil cooler drain valves. If equipped with lower
level drains on the supply and return lines, these too can
be utilized for draining.
Figure 5-7. Oil Strainer Drain Valve and Oil Separator Drain Valve
VSS/VSM/VSH/VSSH • Installation, Operation and Maintenance Manual • Emerson • 35391SD
Oil Separator
Drain Valve
5 – 11
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Troubleshooting
