Craftsman 16781 - Professional 80 Gal. Vertical Air Compressor Owner's Manual page 23

PROBLEM
Motor will not
run (continued)
CAUSE
Fuse blown, circuit breaker
tripped.
Safety Valve on
pump "pops"
out
Knocking Noise
Pressure switch, check
valve, or pump could be in
need of servicinq.
Possible defect in safety
valve.
Defective check valve.
Loose pulley.
Loose flywheel.
Compressor mounting
screws loose.
Loose belt.
Carbon build-up in pump.
Belt to tight.
Excessive belt Loose belt.
wear
Tight belt.
Loose pulley.
Pulley misalignment.
Squealing Compressor pump has
sound no oil.
Loose belt.
CORRECTION
1. Check fuse box for blown fuse
and replace as necessary. Reset
circuit breaker. Do not use a fuse
or circuit breaker with higher
rating than that specified for your
particular branch circuit.
2. Check for proper fuse. You
should use a time delay fuse.
3. Check for low voltage conditions
and/or proper extension cord.
4. Disconnect the other electrical
appliances from circuit or
operate the compressor on its
own branch circuit.
Have checked by a Trained Service
Technician.
Operate safety valve manually by
pulling on ring. If valve still leaks, it
should be replaced.
Remove and clean, or replace.
Tighten pulley set screw, see Parts
manual for torque specifications.
Tighten flywheel screw, see Parts
manual for torque specifications.
Tighten mounting screws,see Parts
manual for torque specifications.
Check belt tension, see "Adjusting
Belt Tension" in the Maintenance
section.
Have checked by a Trained Service
Technician.
Check belt tension, see "Adjusting
Belt Tension" in the Maintenance
section.
Check belt tension, see "Adjusting
Belt Tension" in the Maintenance
section.
Check belt tension, see "Adjusting
Belt Tension" in the Maintenance
section.
Have checked by a Trained Service
Technician.
See "Motor Pulley/Flywheel
Alignment" paragraph in the
Maintenance section.
See "Oil-Checking" paragraph in the
Maintenance section.
Check belt tension, see "Adjusting
Belt Tension" in the Maintenance
section.
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