Emerson VSG Manual page 47

Service
INSPECTION OF SLIDE VALVE ASSEMBLIES IN
THE COMPRESSOR
Prepare the compressor for servicing.
A) Remove the gate rotor access covers. Using a
mirror and flashlight, visually inspect the slide
valve carriage through the gas bypass opening.
Look for any significant signs of wear on the slide
valve carriage.
B) To check the clearance of the slide valve clamps,
the gate rotor support must be removed. Refer
to removal of the gate rotor support.
C) Using a feeler gauge, inspect the clearance be-
tween capacity and volume slide valve clamps
and slide valve carriage through the gas bypass
opening. The clearance should be less than
0.002".
D) If the slide valves are worn in excess of the toler-
ances, the factory should be contacted.
REMOVAL SLIDE VALVE CARRIAGE ASSEM-
BLIES
A) Prepare the compressor for servicing.
B) If only one of the slide valve carriages is removed
only the corresponding gate rotor support
needs to be removed. If both carriages are
removed both gate rotors must be removed.
Remove the gate rotor assemblies.
C) Remove the capacity and volume actuators.
Remove the discharge manifold, capacity and
volume cross shafts and the slide valve racks.
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