Industrial Series
Quincy Compressor
50263-106, October 2004
15
3501 Wisman Lane, Quincy IL - 62305-3116
PILOT VALVE 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.
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!
*
Step 1.
Flip the toggle to the
"RUN" position as
shown, or turn the
knurled knob (if so
equipped) counter-
clockwise until it
stops.
Setting Unload Pressure
Step 2.
Loosen locknut (coun-
terclockwise).
* Sta-
bilize with back-up
wrench!
*
Setting Differential Pressure
Step 5.
Loosen locknut (counterclockwise).
*
Stabilize with back-up wrench!
Step 6.
Turn clockwise to decrease the
differential pressure and coun-
terclockwise to increase the dif-
ferential pressure. Hold position
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 QTS Series
Page 25: ......
