Quincy QSF Series, Instruction Manual

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Section VII– Troubleshooting
PROBABLE CAUSE
CORRECTIVE ACTION
Excessive Water Content in Fluid
Water drain intervals Drain water as needed to reduce water content in fluid below 200
PPM.
Discharge temperature too low Check operation of thermostatic valve or water regulating valve. If
condition continues, consult factory service department.
Pressure Relief Valve Exhausting
Differential pressure regulator not
set correctly Adjust differential pressure regulator to obtain desired modulation
range.
Air pressure not set correctly Readjust air pressure switch so that the compressor unloads at the
desired pressure.
Air inlet valve not closing properly
in relation to air demand Correct in accordance with the instruction in “Inlet valve not opening
or closing in relation to air demand” section of this troubleshooting
guide.
Plugged separator Replace with new air/fluid separator
Faulty receiver pressure gauge Check gauge for accuracy and replace if necessary. Adjust control
settings.
Faulty pressure relief valve Check pressure relief valve for correct pressure setting. If valve is still
leaking, replace with new relief valve.
Quincy Compressor – QSF Series
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