13-18-606 Page 54
SECTION 10
INLET CONTROL VALVE
INLET CONTROL VALVE
– This device is located at the intake flange of the compressor, and allows the
compressor to remain pressurized and ready for quick response to air demand when the latter is not
running.
During compressor operation, the underside of the poppet is vented to atmosphere via a 3-way solenoid
valve, allowing it to fall (open) and feed fresh air to the compressor inlet. An internal self-actuated blow-
off valve helps to quickly vent the air signal trapped below the poppet. During stopped operation modes
(e.g., commanded from the key pad or initiated by protective shutdowns), the 3-way solenoid valve feeds
sump air to the underside of the poppet, forcing it upward (closed) and blocking-off the compressor
intake. The internal blow-off valve is also forced closed by the sump air signal.
Figure 10-1 – INLET CONTROL VALVE
Inlet Control Valve (Body) Inspection -
The valve does not require maintenance or lubrication. If air/oil
leaks develop across the valve disc during pressurized conditions (e.g., machine stopped), valve seals
should be inspected for wear and tear signs:
1. Be sure the unit is completely off and oil sump is depressurized.
2. Disconnect, lockout and tagout power supply to the compressor package.
3. Close (when provided) valve isolating compressor package from air system.
4. Identify (by position) each tube connected to the valve body and remove.
D301977-B
(Ref. Drawing)
Summary of Contents for VS-11
Page 10: ...13 18 604 Page 9 Figure 1 2 PACKAGE OUTLINE AIR COOLED 300CGA804 A Ref Drawing Page 1 of 2...
Page 11: ...13 18 604 Page 10 Figure 1 3 PACKAGE OUTLINE AIR COOLED 300CGA804 A Ref Drawing Page 2 of 2...
Page 28: ...13 18 606 Page 27 Figure 4 1 ELECTRICAL ENCLOSURE HARDWARE 302CGA810 D Ref Drawing...
Page 31: ...13 18 606 Page 30 Figure 4 2 PIPING AND INSTRUMENTATION ILLUSTRATION 300CGB797 B Ref Drawing...
Page 67: ......