Emerson Vilter VSG128, Installation, Operation And Service Manual

Page: 39 / 84

5 – 5
Section 5 • Maintenance/Service
HPLD Single Screw Compressor • Installation, Operation and Service Manual • Emerson • 35391HP
NOTE
DO NOT remove the valve from the piping or filter
housing.
2. Remove the cap of the oil analysis bottle and posi-
tion it carefully under the valve spout. (Make sure
the valve spout is rotated to the downward position)
SLOWLY AND VERY CAREFULLY press the “PUSH
BUTTON” with your finger to open the valve, and release
the button to close it, see Figure 5-4.
WARNING
If the valve is opened too rapidly, a foamy pressurized
jet of oil will gush out and splash outside the container.
Figure 5-4. Operating the Oil Sampling Valve
Button being
pressed, valve open
Button released,
valve closed
3. In most cases there will be foam in the oil, so you
must fill the bottle up to the top and then wait for
the foam to dissipate. Repeat this step as many times
as necessary (around 4 to 6 times) until the clear oil
level reaches ¾ full, see sequence in Figure 5-5.
4. After all the foam dissipates, tighten the sample
bottle cap.
5. Tighten the oil sampling valve cap.
6. For valve #3709A only: back seat the knurled lock-
nut by turning it counter-clockwise. This is to pre-
vent any accidental release, see Figure 5-3 (c) .
7. Attach the filled sampling information label to the
bottle and mail the sample out to the oil analysis lab
immediately.
NOTE
Missing information from the sampling label may
result in longer turnaround time as the laboratory
will need to request the info before the sample can
be tested.
Figure 5-5. Stages of the Oil Sample Taking Process