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Speedaire Operating Instructions and Parts Manual
Model 5Z598C
Troubleshooting Chart (Continued)
Symptom
Air leak from safety valve
Compressor is not supplying enough air to
operate accessories
Motor will not run
Possible Causes
Possible defect in safety valve
1. Prolonged excessive use of air
2. Compressor is not large enough for air
requirement
3. Restricted air intake filter
4. Hole in hose
5. Check valve restricted
6. Air leaks
1. Motor overload protection switch has
tripped
2. Tank pressure exceeds pressure switch
"cut-in" pressure
3. Wrong gauge wire or length of
extension cord
4. Check valve stuck open
5. Loose electrical connections
6. Paint spray on internal motor parts
7. Possible defective motor
8. Fuse blown, circuit breaker tripped
9. Pressure release valve on pressure
switch has not unloaded head pressure
7
Corrective Action
Operate safety valve manually by pulling
on ring. If valve still leaks, it should be
replaced
1. Decrease amount of air usage
2. Check the accessory air requirement. If it
is higher than the SCFM or pressure
supplied by your air compressor, you
need a larger compressor
3. Clean or replace air intake filter. Do not
operate the air compressor in apaint
spray area
4. Check and replace if required
5. Remove and clean or replace
6. Tighten fittings (See Air Leaks Section of
Troubleshooting Chart)
1. Let motor cool off and overload switch
will automatically reset
2. Motor will start automatically when tank
pressure drops below "cut-in" pressure
of pressure switch
3. Check for proper gauge wire and cord
length
4. Remove and clean or replace
5. Check wiring connection inside pressure
switch and terminal box area
6. Have checked at Service Center. Do not
operate the compressor in the paint
spray area. See flammable vapor
warning on page 2
7. Have checked at local Service Center
8.
a. Check fuse box for blown fuse and
replace if necessary. Re-set circuit
breaker. Do not use a fuse or circuit
breaker with higher rating than
that specified for your partiular
branch circuit
b. Check for proper fuse; only
"Fusetron" Type T fuses are
acceptable
c. Check for low voltage conditions
and/or proper extension cord
d. Disconnect the other electrical
appliances from circuit or operate
the compressor on its own branch
circuit
9. Bleed the line by pushing the lever on
the pressure switch to the OFF position;
if the valve does not open, replace it
5Z598C
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