Quincy QSF Series Instruction Manual page 46

Section VII– Troubleshooting
PROBABLE CAUSE
Excessive Fluid Consumption
Too high fluid level in the receiver
Plugged scavenger line
High discharge temperature
Low reservoir pressure with fully
open inlet valve.
Faulty or damaged separator
Leak in fluid lines
Seal failure, leaks
Cycling too often between load and
unload
Incorrect fluid
Frequent Air Cleaner Clogging
Compressor operating in highly
contaminated atmosphere
Air cleaner not adequate for
conditions
Inlet valve not opening or closing in relation to air demand
Improper setting of operating
pressure
Excessive moisture in control air line
at air cylinder
Improper functioning of inlet valve
piston
Jammed air inlet valve assembly
Faulty solenoid valve
Faulty shuttle valve
Loose wiring connections at
solenoid valve
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CORRECTIVE ACTION
Adjust fluid level to recommended fluid level by draining the
reservoir. Use fluid level gauge as a guide.
Clean scavenger line orifice and tube.
Correct in accordance with the instructions in "High discharge air
temperature" section of this troubleshooting guide.
Reservoir pressure should not fall below 50 PSIG when running
loaded. Check system CFM requirement or minimum pressure check
valve.
Change air/fluid separator.
Check for leaks and correct.
Replace seal assembly and o-rings.
Correct in accordance with the instructions in "Too rapid cycling
between load and unload" section of this troubleshooting guide.
Use recommended fluids only. See lubrication section.
Use remote air intake mounting
Use specialized air filter. Contact an Authorized Quincy Distributor.
Adjust operating pressure to proper setting
Service control airline filter daily.
Check piston and cylinder bore. Repair or replace as needed.
Check air inlet valve bushing and shaft. Check piston and cylinder
bore. Repair or replace as necessary.
Repair or replace as necessary.
Repair or replace as necessary.
Check and tighten wiring terminals.
Quincy Compressor – QSF Series