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Craftsman Air compressor - Troubleshooting (Continued); Air Supply and Motor Start Issues; Pressure Switch and Valve Faults

Craftsman Air compressor
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TROUBLESHOOTING GUIDE (Continued)
PROBLEM CAUSE ............
Compressor is not supplying] Prolonged excessive use of air.
enough air to operate accesso- l
ries. ICompressor is not large enough for air
requirement.
Motor will not run or restart.
Regulator knob continuous air
leak. Regulator will not shut off
at air outlet.
Restricted air intake filter.
Hole in hose.
Check valve restricted.
Air leaks.
Motor overload protection switch has
tripped.
Tank pressure exceeds pressure switch
"cut-in" pressure.
Wrong gauge wire or length of exten-
sion cord.
Check valve stuck open.
Loose electrical connections.
Possible defective motor or capacitor.
Paint spray on internal motor parts.
Fuse blown, circuit breaker tripped.
CORRECTION
Decrease amount of air usage.
Check the accessory air requirement. If it is higher
than the SCPM or pressure supplied by your air
compressor, you need a larger compressor.
Clean or replace air intake filter. Do not operate the
air compressor in the paint spray area.
Check and replace if required.
Remove and clean, or replace.
Tighten fittings. (See Air Leaks Section of Trou-
bleshooting Guide.)
Let motor cool off and overload switch will auto-
matically reset.
Motor will start automatically when tank pressure
drops below "cut-in" pressure of pressure swilch.
_'heck for proper gauge wire and cord length.
Remove and clean, or replace.
Check wiring connection inside pressure switch and
terminal box area.
Return to Sears Service Center for inspection or
replacement, if necessary.
Have checked at Sears Service Center. Do not oper-
ate the compressor in the paint spray area. See
flammable vapor warning.
Pressure release valve on pressure
switch has not unloaded head pressure.
Broken exhaust valve.
1.Check fuse box for blown fuse and replace, if
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; only time delay fuses are
acceptable.
3. Check for low voltage conditions and/or proper
extension cord.
4. Disconnect the other electrical appliances from
circuit or operate the compressor in its own branch
circuit.
Bleed the line by pushing the lever on the pressure
switch to the "off" position; if the valve does nut
open, replace it.
Remove head and valve plate, inspect and replace if
necessary.
Dirty or damaged regulator internal Clean or replace regulator, or internal parts.
_arts.
13

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