TROUBLESHOOTING AIRLESS PUMP
n
PROBLEM
PROBABLE
CAUSE
REMEDY
Electric motor won't run 1. Unit unplugged or circuit fuse
1. Check
blown
2. Pressure setting too
low 2.1ncrease
3. Brushes on motor are worn 3. Replace
4. Electric motor burned out
4. Replace
5. Switch defective
5. Replace
6. Fuse in pump
blown
6. Replace
Gas engine won't start
1. Engine switch not on 1.
Tum
on
(where applicable)
2. Engine oil level low 2. Try starting engine.
If
light on
rear glows, add oil
3.
Out of gas
3.Fill
4. Spark plug cable disconnected
or
4. Connect
or
replace
bad plug
Pump won't prime
1. Air in line 1. Check syphon tube
0-ring
and/or
let paint circulate in prime
position
2.
Insufficient pressure
2.
Increase pressure
3.
Clutch wom or damaged (Gas)
3. Replace
Insufficient material
flow 1. No paint
1 . Check supply
2. Syphon strainer clogged
2.
Clean
\1
3. Pump/gun filter clogged
3.
Clean & replace
/
4. Pump will
not
prime, material
too
4. Thin material
heavy
5. Engine not tuned properly (Gas)
5. Tune engine
6. Worn clutch (Gas)
6. Service
Pump
will not maintain pressure
1.
Air leak in system
. 1. Tighten connections
2. Air leak in syphon tube
2. Tighten, check for leaks
3.
Inlet valve not seating
3. Service
or
clean
4.
Wom
packings
4. Replace
5. Broken
or
worn valve seats
5. Reverse
or
replace
6.
Wom
prime valve
6. Replace
Not enough pressure
1. Pressure setting too low
1. Increase
2. Plugged filters
2.
Clean
or
replace
3. Spray tip too big
or
worn
3. Change
or
replace
4. Engine
or
motor rpm
to
low (Gas)
4.
Increase throttle
Excessive surge
at
spray gun
1.
Wrong type
of
hose
1. Replace with a minimum 50'
grounded nylon braid high
pressure hose
2. Spray tip too big
or
worn
2. Change
or
replace
3. Excessive pressure
3. Decrease pressure and engine
speed
Paint leaks into oil cup
1.
Wom
out packings
1. Replace
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