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Troubleshooting Chart
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Operating Instructions and Assembly Instructions
20
Symptom Possible Cause(s) Corrective Action
Motor hums and does not run 1. Supply voltage too low 1. Do not use an extension cord, it is better to add hose length.
Use portable generator with a 2400 VA minimum rating
Motor does not run or hum 2. Power Switch is in OFF position
3. Pressure knob is set to zero.
2. Flip Power Switch to ON position
3. Turn pressure knob clockwise to increase pressure.
4. Bad power connection 4. Check power connections at power receptacle, along extension
cord and at equipment for looseness or damage
5. Circuit breaker or fuse is tripped
voltage too low, extension cord too long for available supply
voltage, or motor has been damaged.)
6. Thermal overload protection
activated
6. Allow motor to cool for approximately 30 minutes, determine
low, extension cord too long for available supply voltage, or
motor has been damaged.)
Motor runs, but pump does
not prime after being cleaned
after last use. (This problem
can usually be prevented by
following the recommended
cleaning and storage
procedure)
7. Check valves stuck 7. “Pop” Inlet Valve and Outlet Valves. Call 1-800-626-4401
8. Suction Assembly loose and/or
sealing surfaces are dirty at Inlet
Valve
8. Remove Suction Assembly, clean sealing surfaces and
reassemble
9. Suction Head not immersed in
paint
9. Add more paint to bucket and/or adjust position of Suction
Assembly
10. Prime/Spray Control is in the
SPRAY position
10. Turn the Prime/Spray Control to the Prime position
Motor runs, but pump does
not prime even though it was
working just fine a little while
ago. (Usually occurs after
moving or adding more paint
to the paint bucket.)
11 See Possible Causes 8, 9, 10 11. See Corrective Actions 8, 9, 10
12. Clogged suction filter 12. Remove suction filter and clean. Also, refer to Maintenance
section
13. Trash caught in valves 13. See “Force Feeding” figure on page 22
14. Paint sediments settled to
bottom of bucket
14. Strain and mix paint thoroughly
Pump primes, but does not
build pressure
15. Prime/Spray Control not in Spray
position
15. Turn Prime/Spray Control to Spray position
16. Pressure Control not set to high
enough pressure
16. Turn Pressure Control clockwise to desired pressure. Fully
clockwise is maximum pressure
17. Even though Prime/Spray
Control is in Spray position, fluid
still flows from By-Pass Tube.
Prime/Spray Control is worn or
damaged
17. Call 1-800-626-4401
Pump primes and builds
pressure, however, the
equipment does not spray or
produce a quality spray pattern
18. Clogged gun filter 18. Replace with new filter. Do not attempt to clean gun filters.
Also, refer to Maintenance section
19. Clogged Spray Tip 19. See Clearing Clogs section
20 A. Tip is damaged or worn 20. A. Replace tip. Also, refer to Maintenance section
B. Paint requires thinning B. Follow paint manufacturers thinning recommendations.
Paint should not typically need to be thinned more than 8
oz. of solvent per gallon
C. Reversible Spray Tip in
cleaning position
C. Turn Spray Tip to Spray position. See Cleaning section for
details
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