Section VIII - Service Adjustments
Quincy Compressor-QSI
®
107
• Dierential Pilot Valve
• Pressure Switch
• Water Temperature Regulating Valve
(Water-cooled units Only)
• Drive Coupling Alignment
WARNING!
Never adjust the pressure higher than the factory
setting. Death or serious injury and compressor
or property damage could result.
Open a manual vent valve to allow the compressor to
regulation, slowly close the valve, allowing the unit to
build air pressure to the desired modulation point and
-
When this air is felt, air is beginning to pass through the
pilot valve to the air cylinder on the inlet valve, causing
the valve to modulate toward its closed position, thereby
To raise the pressure, turn the adjusting screw in (clock-
Pressure Switch
The pressure switch determines what pressure the com-
pressure switch cut-out point to 15 PSIG over the desired
turning the screw clockwise to increase the cut-in/cut out
Water Temperature Regulating Valve
(Water-cooled units Only)
-
-
tures and/or pressures at each location valve adjustment
should be checked during start-up to maintain 180°F
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