Troubleshooting Chart - Champion R Series Operation & Service Manual

Troubleshooting Chart

Always shut off unit and relieve all pressure from air tank before performing any maintenance.
Failure to do so may result in equipment damage or injury.
Never operate unit without belt guard in place.
Troubleshooting Chart
Symptom
Engine will not start.
Tank pressure builds up slowly.
Tank pressure builds up quickly.
Discharge pressure relief valve
pops off while compressor is
running.
Compressor will not unload
Excessive belt wear.
Compressor runs hot.
Interstage pressure relief valve
pops off.
Excessive oil consumption.
Air escapes from centrifugal
unloader when unit is running
Air escapes from centrifugal
unloader when unit is stopped.
R-Series Engine
Operation & Service
Possible Cause(s)
1. No fuel in fuel tank.
2. High tank pressure.
3. Refer to separate engine manual for
other causes.
1. Air leaks.
2. Dirty air filter.
3. Defective compressor valves
1. Excessive water in tank.
1. Wrong pressure switch setting.
2. Defective ASME relief valve.
1. Wrong pilot valve setting.
2. Defective pilot valve.
3. Lack of air to pilot valve.
1. Pulley out of alignment.
2. Belts too tight or too loose.
1. Improper flywheel rotation
2. Defective compressor valves.
3. Dirty air filter.
4. Dirty cylinder and/or intercooler.
1. Defective compressor valves.
2. Improper valve installation.
1. Dirty air filter.
2. Wrong oil viscosity.
3. Oil leaks.
4. Worn piston rings.
5. Scored cylinder
1. Centrifugal unloader release valve
dirty or detective.
1. Check valve stuck in open position.
27
Corrective Action
1. Add fuel
2. Reduce tank pressure to 130 PSIG or
less.
1. Tighten fittings.
2. Clean or replace.
3. Install new valves.
1. Drain tank.
1. Adjust to correct setting.
2. Replace valve.
Warning – Relieve tank pressure
before servicing.
1. Adjust to correct setting.
2. Replace pilot valve.
3. Check piping from tank to pilot valve
for leaks
1. Realign motor pulley.
2. Adjust belt tension.
1. Check for correct rotation.
(Counter clockwise when viewed from
drive side.)
2. Install new valve assembly.
3. Clean or replace.
4. Clean cylinder fins and/or intercooler.
1. Install new valves.
2. Verify proper valve placement.
1. Clean or replace.
2. Refill with proper viscosity oil.
3. Tighten bolts. Replace gaskets.
4. Replace rings.
5. Replace cylinder.
1. Clean or replace valve
1. Replace check valve.
Warning – Relieve tank pressure
before servicing.
CQF3474 v.00
Jan.2018