14
Flushing
Specifications
1. New Sprayer:
Oil is used by the
factory for testing and protection. It
is necessary to flush unit before
spraying.
A. If spraying water-base paint, flush
with mineral spirits followed by
water.
B. If spraying oil-base paint, flush
with mineral spirits only.
2. Changing from water-base to
oil base:
Flush with water, then
mineral spirits.
3. Changing from oil-base to
water-base:
Flush with mineral
spirits, then water.
4. Changing colors:
Flush with a
compatible solvent such as water or
mineral spirits.
5. Storage:
To assure proper
performance and long life, always
clean the sprayer thoroughly before
storing.
A. Water-Base Paint:
Flush with
water, then mineral spirits and leave
the pump, gun and hose filled with
mineral spirits. Shut off and unplug
the sprayer and turn pressure relief
prime valve to prime to relieve
pressure. Return prime valve to
spray position.
B. Oil-Base Paint:
Flush with
mineral spirits. Shut off and unplug
the sprayer, turn the pressure relief
prime valve to prime to relieve
pressure and leave open. Return
prime valve to spray position.
• During storage the power cord
must be coiled around cord holder to
avoid damage.
6. Start-Up After Storage:
A. Water-Base Paint:
Flush out
mineral spirits with water.
B. Oil-Base Paint:
Flush out the
mineral spirits with the material to be
sprayed.
Always dispose of mineral spirits in a
proper way.
PROBLEM
Electric motor won't run
Gas engine won't start
(where applicable)
Pump won’t prime
Insufficient material flow
Pump will not maintain
pressure
Not enough pressure
Excessive surge at
spray gun
Paint leaks into oil cup
PROBABLE CAUSE
1. Unit unplugged or circuit fuse
blown
2. Pressure setting too low
3. Brushes on motor are worn
4. Electric motor burned out
5. Switch defective
6. Fuse in pump blown
1. Engine switch not on
2. Engine oil level low
3. Out of gas
4. Spark plug cable
disconnected or bad plug
1. Air in line
2. Insufficient pressure
3. Clutch worn or damaged
(Gas models)
1. No paint
2. Syphon strainer clogged
3. Pump/gun filter clogged
4. Pump will not prime, material
too heavy
5. Engine not tuned properly
(Gas)
6. Worn clutch (Gas models)
1. Air leak in system
2. Air leak in syphon tube
3. Inlet valve not seating
4. Worn packings
5. Dirty or worn ball valves
6. Worn valve seats
7. Worn prime valve
1. Pressure setting too low
2. Plugged filters
3. Spray tip too big or worn
4. Engine or motor rpm too low
(Gas)
1. Wrong type of hose
2. Spray tip too big or worn
3. Excessive pressure
1. Worn out packings
REMEDY
1. Check
2. Increase
3. Replace
4. Replace
5. Replace
6. Replace
1. Turn on
2. Try starting engine. If light
on rear glows, add oil
3. Fill
4. Connect or replace
1. Check syphon tube
O-Ring and/or let paint
circulate in prime position
2. Increase pressure
3. Replace
1. Check supply
2. Clean
3. Clean & replace
4. Thin material
5. Tune engine
6. Service
1. Tighten connections
2. Tighten, check for leaks
3. Service or clean
4. Replace
5. Clean or replace
6. Reverse valve seats
7. Replace
1. Increase
2. Clean or replace
3. Change or replace
4. Increase throttle
1. Replace with a minimum
50' grounded nylon braid
high pressure hose
2. Change or replace
3. Decrease pressure and
engine speed
1. Replace
TROUBLESHOOTING AIRLESS PUMP
