Emerson VSG & VSSG Specifications download pdf (Page 30)

GENERAL COMMENTS

When working on the compressor, care must be taken

to ensure that contaminants (i.e. water from melting

ice, dirt and dust) do not enter the compressor while

it is being serviced. It is essential that all dust, oil or

ice that has accumulated on the outside of the com-

pressor be removed before servicing the compressor.

When servicing the compressor, all gaskets, O-rings,

roll pins and lock washers must be replaced when

reassembling the compressor.

PREPARATION OF UNIT FOR SERVICING

A) Shut down the unit, open the electrical discon-

nect switch and pull the fuses for the compressor

motor to prevent the unit from starting. Put a

lock on the disconnect switch and tag the switch

to indicate that maintenance is being performed.

B) Isolate the unit by manually closing the discharge

Stop valve. Allow the unit to equalize to suction

pressure before closing the Suction Bypass. After

the unit has equalized to suction pressure and

suction valve closed, use an acceptable means to

depressurize the unit that complies with all Local,

State and Federal Ordinances.

C) Remove drain plugs from the bottom of com-

pressor housing and the discharge manifold On

units equipped with Suction Oil Injection (SOI)

manually open the SOI solenoid valve below the

compressor. Drain the oil into appropriate con-

tainers.

Service

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Emerson VSG & VSSG Specifications Page 30