5 – 4
Section 5 • Maintenance/Service
HPLD Single Screw Compressor • Installation, Operation and Service Manual • Emerson • 35391HP
(a) Oil Sampler Valve for
Ammonia and Other
Refrigerants Applications
(b) Valve shown ready for
oil sampling
(c) Valve shown in lockout
position
Sampling Procedure
THE SAMPLING PRESSURE RANGE IS LIMITED BETWEEN
5 TO 750 PSI (0.03 – 5.17 MPa). IF THE OPERATING
PRESSURE IS ABOVE 750 PSI (5.17 MPa), THE OIL
SAMPLING MUST BE DONE WHEN THE COMPRESSOR IS
NOT RUNNING AND ENSURE THE SYSTEM PRESSURE IS
WITHIN THE 5 TO 750 PSI (0.03 – 5.17 MPa) SAMPLING
RANGE.
A 1/4” NPT oil sampling valve is provided either in the oil
filter canister cover or in the piping after the filter (See
Figure 5-2 or 5-3(a) according to application).
1. Unthread the oil sampling valve cap. For valve
#3709A, you also need to turn the knurled locknut
clockwise, see Figure 5-3 (b).
Figure 5-2. Oil Sampler Valve (VPN #3708A)
For Gas Compression Applications
Figure 5-3. Oil Sampling Valve (VPN #3709A) For Ammonia and Refrigerant Compressors
Summary of Contents for Vilter VSG128
Page 1: ...HPLD Single Screw Bare Shaft Compressor Installation Operation and Service Manual ...
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