Industrial / Air Master Series
Quincy Compressor
50161-105, March 2008
32
3501 Wismann Lane, Quincy Ill. - 62305-3116
PILOT V
PILOT V
PILOT V
PILOT V
PILOT VAL
AL
AL
AL
ALVE ADJUSTMENTS
VE ADJUSTMENTS
VE ADJUSTMENTS
VE ADJUSTMENTS
VE ADJUSTMENTS
All adjustments made to the pilot valve must be performed by a qualified technician. The adjustments must
be made while the unit is operating, therefore, extreme caution must be taken while working on the unit.
Observe all necessary precautions. Always use a back-up wrench and make all differential and unload pressure
adjustments in very small increments (1/8 turn).
WARNING !
The pressure switch and / or pilot valve are set at the factory for maximum efficiency. Adjustments to either
component must be performed by a qualified technician. Exceeding the factory recommended maximum pressure
will void the warranty and may cause personal injury.
*
Setting Unload Pressure
*
Step 1.
Flip the toggle to the
"RUN" position as
shown, or turn the
knurled knob (if so
equipped) counter-
clockwise until it
stops.
Step 2.
Loosen locknut
(counterclockwise).
*
Stabilize with
back-up wrench!
Step 3.
Turn clockwise to increase unload pres-
sure, turn counterclockwise to decrease
unload pressure. Hold position with
wrench and proceed to Step 4.
Step 4.
Tighten locknut (clockwise) with wrench.
* Stabilize with back-up wrench!
Setting Differential Pressure
Step 5.
Loosen locknut (counterclock-
wise).
* Stabilize with back-up
wrench!
Step 6.
Turn clockwise to decrease the
differential pressure and coun-
terclockwise to increase the dif-
ferential pressure. Hold posi-
tion with wrench and proceed
to Step 7.
Step 7.
Tighten locknut (clockwise)
with wrench.
* Stabilize with
back-up wrench!
"MANUAL
UNLOAD"
position
(Ref.)
Summary of Contents for Air Master Series
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