Gardner Denver VST110 Operating And Service Manual page 71

Inlet Control Valve (Actuator) Inspection: The actuator does not require maintenance and is
permanently lubricated at the factory with non-silicone grease. If air/oil leaks develop or abnormal (e.g.,
slow motion) performance is noted in spite of proper feed pressure then the complete actuator must be
replaced:
1. Be sure the unit is completely off and oil reservoir is depressurized.
2. Disconnect, lockout and tagout power supply to the compressor package.
3. Remove 3-way solenoid valve piped into the feed connection port of actuator.
4. Unscrew four (4) fasteners securing pneumatic actuator to valve body and remove.
5. Replace actuator with new equivalent.
6. Reassemble valve and 3-way solenoid valve in reverse order.
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