Troubleshooting Chart; Corrective Action - Campbell Hausfeld 3/4 HP UNITS Instrucciones De Funcionamiento Y Montaje

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Operating Instructions and Assembly Instructions
Airless Painting Systems

Troubleshooting Chart

Symptom
Motor hums and does not
run
Motor does not run or hum
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 on pages
7-8)
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.)
Pump primes, but does not
build pressure
Pump primes and builds
pressure, however, the
equipment does not spray or
produce a quality spray
pattern
www.chpower.com
Possible Cause(s)
1. Unit under pressure.
2. Equipment has been dropped
which caused motor to become
misaligned.
3. Supply voltage too low.
4. Power Switch is in OFF position.
5. Bad power connection.
6. Circuit breaker or fuse is tripped.
7. Thermal overload protection
activated.
8. Check valves stuck
9. Suction Assembly loose and/or
sealing surfaces are dirty at Inlet
Valve.
10. Suction Head not immersed in
paint.
11. Prime/Spray Control is in the
spray position and/or the
Pressure Control is in the Low
Pressure/Hydraulic Bleeding
position.
12. Hydraulic system contains air.
13. Hydraulic oil level low.
14. See Possible Causes 9,10,11,13.
15. Clogged suction filter.
16. Trash caught in valves.
17. Paint sediments settled to
bottom of bucket.
18. Prime/Spray Control not in Spray
position.
19. Pressure Control not set to high
enough pressure.
20. Even though Prime/Spray Control
is in Spray position, fluid still
flows from By-Pass Tube.
Prime/Spray Control is worn or
damaged.
21. Clogged gun filter.
22. Clogged Spray Tip.
23 a. Tip is damaged or worn
b. Paint requires thinning
c. Reversible Spray Tip in
cleaning position

Corrective Action

1. Turn Prime/Spray Control to prime position
2. Take to authorized service center to have motor assembly
realigned. Or, call technical support.
3. Do not use an extension cord, it is better to add hose length.
Use portable generator with a 2400 VA minimum rating
4. Flip Power Switch to ON position.
5. Check power connections at power receptacle, along extension
cord and at equipment for looseness or damage.
6. Correct cause of circuit overload. (Possible causes: Supply voltage
too low, extension cord too long for available supply voltage,
equipment was under pressure while trying to start motor or
motor has been damaged.)
7. Allow motor to cool for approximately 30 minutes, determine
cause and restart motor. (Possible causes: Supply voltage too low,
extension cord too long for available supply voltage, equipment
was under pressure while trying to start motor or motor has
been damaged.)
8. "Pop" Inlet Valve and Outlet Valves. See steps 4 & 5 of
Preparation Instructions (page 5).
9. Remove Suction Assembly, clean sealing surfaces and reassemble.
10. Add more paint to bucket and/or adjust position of Suction
Assembly.
11. Turn the Prime/Spray Control to the Prime position and Pressure
Control fully clockwise.
12. Turn Pressure Control to Low Pressure/Hydraulic Bleeding
position for 1 minute while motor is running.
13. Add oil so level is within 1/4" of housing edge. (See notes in
Maintenance Section on oil leaks.) Turn Pressure Control to Low
Pressure/Hydraulic Bleeding position for 1 minute.
14. See Corrective Actions 9,10,11,13.
15. Remove suction filter and clean. Also, refer to Maintenance
section.
16. See "Force Feeding" figure on page 11.
17. Strain and mix paint thoroughly.
18. Turn Prime/Spray Control to Spray position.
19. Turn Pressure Control clockwise to desired pressure. Fully
clockwise is maximum pressure.
20. Replace with service kit (See replacement parts list) or take
equipment to authorized service center.
21. Replace with new filter. Do not attempt to clean gun filters. Also,
refer to Maintenance section.
22. See Clearing Clogs section.
23 a. Replace tip. Also, refer to Maintenance section.
b.Follow paint manufacturers thinning recommendations
Paint should not typically need to be thinned more than
8 oz. of solvent per gallon
c. Turn Spray Tip to Spray position. See Cleaning section
for details
10

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