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High-performance
Airless Sprayer
Owner’s Manual
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1770 Fernbrook Lane, Minneapolis, MN 55447
© 1999 Wagner Spray Tech Corporation, 1770 Fernbrook Lane, Plymouth, MN 55447 http://www.wagnerspraytech.com
All rights reserved, including right of reproduction in whole or in part, in any form. Printed in the U. S. A. 0803
Form No. 0278662E
Español Français English
SAFETY PRECAUTIONS
This manual contains information which must be read and
understood before using the equipment. When you come to an
area which has one of the following symbols, pay particular
attention and make certain to heed the safeguard.
•
WARNING
•
This symbol indicates a potential hazard which may cause
serious injury or loss of life. Important safety information will
follow.
•
•
CAUTION
•
This symbol indicates a potential hazard to you or to the
equipment. Important information that tells how to prevent
damage to the equipment or how to avoid causes of minor
injuries will follow.
NOTE TO PHYSICIAN:
Injection into the skin is a traumatic injury. It is important
to treat the injury surgically as soon as possible. DO NOT
delay treatment to research toxicity. Toxicity is a concern
with some coatings injected directly into the blood
stream. Consultation with a plastic surgeon or
reconstructive hand surgeon may be advisable.
NOTE: Notes give important information which
should be given special attention.
CAUTION
HAZARD: EXPLOSION OR FIRE - Solvent and paint fumes
can explode or ignite, causing property damage
and/or severe injury.
THIS UNIT IS PROVIDED WITH A THERMALLY
PROTECTED AUTOMATIC RESET. IF AN OVERLOAD
OCCURS THE THERMALLY PROTECTED AUTOMATIC
RESET DISCONNECTS THE MOTOR FROM THE POWER
SUPPLY.
• The motor will restart without warning when the protector
automatically resets.
• Always disconnect the motor from the power supply
before working on the equipment.
• When the thermally protected automatic reset disconnects
the motor from the power supply, relieve pressure by
turning the priming valve to PRIME.
• Turn the ON/OFF switch to OFF.
PREVENTION:
• Exhaust and fresh air introduction must be provided to keep
the air within the spray area free from accumulation of
flammable vapors.
• Avoid all ignition sources such as static electricity sparks,
open flames, pilot lights, hot objects, cigarettes, and sparks
from connecting and disconnecting power cords or working
light switches.
• Fire extinguishing equipment must be present and in good
working order.
• Keep the pump away from the spray area to avoid solvent
and paint fumes.
• High velocity flow of material through equipment may
develop static electricity. The equipment being used, as well
as objects in and around the spray area must be properly
grounded to prevent static discharge and sparks.
• Use only conductive or grounded high pressure fluid hoses
for airless applications. Be sure that the gun is grounded
properly through hose connections.
• Use extreme caution when using materials with a
flashpoint below 70° F (21° C). A fluid’s flashpoint is the
temperature at which vapors from the fluid could ignite if
exposed to a flame or spark.
• Follow the material and solvent manufacturer's safety
precautions and warnings.
• When flushing equipment use the lowest possible pressure.
NOTE: The cause of the overload should be corrected
before restarting. See TROUBLESHOOTING.
WARNING
HAZARD: Injection injury - A high pressure stream of
paint produced by this equipment can pierce
the skin and underlying tissues, leading to
serious injury and possible amputation.
DO NOT TREAT AN INJECTION INJURY AS A SIMPLE CUT!
Injection can lead to amputation. See a physician
immediately.
The maximum operating range of the gun is 2800 PSI fluid
pressure.
HAZARD: EXPLOSION HAZARD DUE TO INCOMPATIBLE
MATERIALS - May cause property damage or
severe injury.
PREVENTION:
• NEVER aim the gun at any part of the body.
• NEVER allow any part of the body to come in contact
with the fluid stream. DO NOT come in contact with a fluid
stream created by a leak in the fluid hose.
• NEVER put your hand in front of the gun. Gloves will not
provide protection against an injection injury.
• ALWAYS lock the gun trigger, shut the fluid pump off and
release all pressure before servicing, cleaning the tip
guard, changing tips, or leaving unattended. Pressure will
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not be released by turning off the engine. The
PRIME/SPRAY knob must be turned to PRIME to relieve
the pressure. Refer to the PRESSURE RELIEF
PROCEDURE described in this manual.
ALWAYS have the tip guard in place while spraying. The
tip guard provides some protection against injection
injuries but is mainly a warning device.
ALWAYS remove the spray tip before flushing or cleaning
the system.
Inspect the paint hose before each use. The paint hose
can develop leaks from wear, kinking and abuse. A leak is
capable of injecting material into the skin.
NEVER use a spray gun which does not have a trigger
lock or trigger guard in place and in working order.
All accessories must be rated at or above 2800 PSI. This
includes spray tips, guns, extensions, and hose.
PREVENTION:
• Do not use bleach.
• Do not use Halogenated hydrocarbon solvents such as
methylene chloride and 1,1,1 - trichloroethane. They are
not compatible with aluminum and may cause an
explosion. If you are unsure of a material’s compatibility
with aluminum, contact your coating's supplier.
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© 1999 Wagner Spray Tech - All rights reserved.
GROUNDING INSTRUCTIONS
WARNING
This product must be grounded. In the event of an electrical
short circuit, grounding reduces the risk of electric shock by
providing an escape wire for the electric current. This product
is equipped with a cord having a grounding wire with an
appropriate grounding plug. The plug must be plugged into an
outlet that is properly installed and grounded in accordance
with all local codes and ordinances.
HAZARD: HAZARDOUS VAPORS - Paints, solvents,
insecticides, and other materials may be
harmful if inhaled, causing severe nausea,
fainting, or poisoning.
PREVENTION:
• Use a respirator or mask whenever there is a chance that
vapors may be inhaled. Read all instructions with the
mask to ensure that it will provide the necessary
protection against the inhalation of harmful vapors.
WARNING
Improper installation of the grounding plug can result in a
risk of electric shock.
If repair or replacement of the cord or plug is necessary, do not
connect the green grounding wire to either flat blade terminal.
The wire with insulation having a green outer surface with or
without yellow stripes is the grounding wire and must be
connected to the grounding pin.
Check with a qualified electrician or serviceman if the
grounding instructions are not completely understood, or if you
are in doubt as to whether the product is properly grounded.
Do not modify the plug provided. If the plug will not fit the
outlet, have the proper outlet installed by a qualified electrician.
This product is for use on a nominal 120 volt circuit and has a
grounding plug that looks like the plug illustrated below. Make
sure that the product is connected to an outlet having the
same configuration as the plug.
HAZARD: GENERAL - May cause property damage or
severe injury.
PREVENTION:
• Read all instructions and safety precautions before
operating any equipment.
• Comply with all appropriate local, state, and national
codes governing ventilation, fire prevention, and
operation.
• The United States Government Safety Standards have
been adopted under the Occupational Safety and Health
Act (OSHA). These standards, particularly part 1910 of
the General Standards and part 1926 of the Construction
Standards should be consulted.
• This high pressure airless pump is designed to be used
with manufacturer authorized parts only. When using this
pump with parts that do not comply with the minimum
specifications and safety devices of the pump
manufacturer, the user assumes all risks and liabilities.
• Before each use, check all hoses for cuts, leaks, abrasion
or bulging of cover, as well as damage or movement of
couplings. If any of these conditions exist, replace the
hose immediately. Never repair a paint hose. Replace it
with another grounded hose.
• All hoses, swivels, guns, and accessories used with this
unit must be pressure rated at or above 2800 PSI.
• Do not spray on windy days.
• Wear protective eyewear.
• Protect skin from contact with toxic spray materials.
Grounded Outlet
Grounding Pin
Cover for grounded outlet box
CAUTION
Use only a 3-wire extension cord that has a 3-blade grounding
plug and a 3-slot receptacle that will accept the plug on the
product. Make sure your extension cord is in good condition.
When using an extension cord, be sure to use one heavy
enough to carry the current your product will draw. An
undersized cord will cause a drop in line voltage resulting in loss
of power and overheating. A 14 or 12 gauge cord is
recommended.
NOTE: Do not use more than 100 feet of extension
cord. If you need to paint further than 100
feet from your power source, use more paint
hose, not more extension cord. Shorter
extension cords will ensure maximum
electrical power for proper operation.
© 1996 Wagner Spray Tech - All rights reserved.
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PREPARING TO PAINT
Pusher Valve Button (optional)
Attaching the Tip to the Gun
GX-07
Gun model GX-07
The gun is secured when the
trigger lock is at a 90° angle
(perpendicular) to the trigger in
either direction.
Gun locked
(gun will not spray)
GX-08
Attaching the Return Hose
1. Be sure that the motor switch is turned to OFF.
2. Screw the brass fitting found in the literature set into the return
tube port on the side of the pump and tighten firmly by hand.
Gun model GX-08
To lock the gun, turn the trigger
lock forward and slightly down
until it stops.
NOTE: Do not overtighten. Hand-tighten only. Some
threads will be visible even when fully
tightend.
Gun locked
(gun will not spray)
WARNING
POSSIBLE INJECTION HAZARD. Do not spray without the
tip guard in place. Never trigger the gun unless the tip is
in either the spray or the unclog position. Always engage
the gun trigger lock before removing, replacing or
cleaning tip.
2. Thread the spray tip onto the gun. Tighten the nut first by
hand, then tighten more firmly with a wrench.
3. If your brass fitting is ribbed, press the return tube onto
the fitting securely. If your brass fitting is straight, thread
the return tube through the clamp provided, press the tube
onto the brass fitting, and secure the clamp.
NOTE: When attaching the tip to the gun, align the tip
guard as shown in the figure below, then
tighten with a wrench.
Attaching the Paint Hose
Begin
tightening
the tip at
this angle
1. Attach the high pressure hose to the paint hose port. Use
an wrench to tighten the paint hose securely.
to achieve
the desired
spray angle
when tight.
Checking the Outlet Valve (optional)
1. Firmly press the optional pusher valve button on the side of
the pump housing to make sure the outlet ball valve moves
freely.
2. Attach the gun to the other end of the high pressure hose.
Tighten securely with two wrenches.
3. Plug the sprayer into a properly grounded outlet or heavy
duty grounded extension cord. Do not use more than 100
feet of cord. If you must spray a long distance from a power
source, use more paint hose, not more extension cords.
Use a minimum size of 16 gauge for power extension cords
up to 50 feet in length, or 12 to 14 gauge for power
extension cords between 50 and 100 feet in length.
Pusher Valve Button
(optional)
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© 1999 Wagner Spray Tech - All rights reserved.
3. Turn the motor switch to ON.
4. Increase the pressure by turning the pressure control
knob clockwise 1/2 turn.
5. Force the inlet valve to open and close by pushing on it
with a screwdriver or the eraser end of a pencil. It should
move up and down about 1/16 of an inch. Continue until
water or oil is sucked into the sprayer. This will wet the
moving parts and break loose any old paint residue.
PRESSURE RELIEF
PROCEDURE
Follow this procedure after the unit is assembled and before
any operation which involves the spray gun such as cleaning
and maintenance or changing tips or accessories.
1. Turn the pressure control knob counterclockwise to its
lowest setting.
2. Turn the PRIME/SPRAY knob to PRIME.
PRIME/SPRAY Knob
6. Put the palm of your hand over the inlet. Turn the
pressure control knob clockwise to its maximum setting.
You should feel suction coming from the inlet valve. If you
do not, see the section on cleaning and servicing the outlet
valve.
Pressure Control Knob
3. Trigger the gun to remove any pressure which may still be
in the hose.
4. Lock the gun by turning the gun trigger lock so that it is
parallel to the gun body.
WARNING
7. Turn the pressure control knob counterclockwise to the
minimum pressure setting.
8. Turn the motor switch to OFF.
POSSIBLE INJECTION HAZARD. Do not spray without the
tip guard in place. Never trigger the gun unless the tip is
in either the spray or the unclog position. Always engage
the gun trigger lock before removing, replacing or
cleaning tip.
Attaching the Suction Set
1. Attach the suction tube to the inlet valve and tighten
firmly by hand. Be sure that the threads are straight so
that the fitting turns freely.
PRIMING
Preparing to Prime
1. Place the unit so that the inlet valve is facing up and fill
the inlet valve with water or with a light household oil.
2. Place the suction tube and the return tube into the paint.
3. Place the paint bucket onto the floor or hang on the pail
bracket, depending on the model of pump you have.
2. Make certain that the PRIME/SPRAY knob is set to
PRIME and that the pressure control knob is turned
counterclockwise to the lowest pressure setting.
© 1999 Wagner Spray Tech - All rights reserved.
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Keep the spray gun at right angles to the surface. This means
moving your entire arm back and forth rather than just flexing
your wrist.
Priming the Pump
1. Turn the pressure control knob counterclockwise to its
lowest pressure setting.
2. Turn the PRIME/SPRAY knob to PRIME.
Even coat throughout
PRIME/SPRAY Knob
Approximately
10 to 12 inches
Keep stroke smooth and at an even speed.
Pressure Control Knob
Keep the spray gun perpendicular to the surface, otherwise
one end of the pattern will be thicker than the other.
Approximately
10 to 12 inches
Right way
3. Turn the motor switch to ON.
4. Turn the pressure control knob clockwise to between half
and full pressure. You should see the paint move through
the suction tube to the pump. Let the unit prime 1 to 2
minutes after paint begins to flow through the return tube.
Wrong way
CAUTION
The spray gun should be triggered by turning it on and off with
each stroke. This will save paint and avoid paint buildup at the
end of the stroke. Do not trigger the gun during the middle of a
stroke. This will result in an uneven spray and splotchy
coverage.
Always reduce the pressure to zero before changing the
position of the priming knob. Failure to do so may cause
damage to the paint pump diaphragm.
Proper way to trigger the spray gun
WARNING
Keep stroke
even
If the pressure control knob is reduced to zero and the
PRIME/SPRAY knob is still on SPRAY while the sprayer is
operating, there will be high pressure in the hose and
spray gun until the priming knob is turned to PRIME or
until the spray gun is triggered to relieve the pressure.
SPRAYING
Start stroke
The key to a good paint job is an even coating over the entire
surface. This is done by using even strokes. Keep your arm
moving at a constant speed and keep the spray gun at a
constant distance from the surface. The best spraying
distance is 10 to 12 inches between the spray tip and the
surface.
Heavy Coat
Light Coat
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Release trigger
End stroke
Practice
1. Be sure that the paint hose is free of kinks and clear of
objects with sharp cutting edges.
2. Turn the pressure control knob counterclockwise to its to
its lowest setting.
3. Turn the PRIME/SPRAY knob to SPRAY.
4. Turn the pressure control knob clockwise to its highest
setting. The paint hose should stiffen as paint begins to
flow through it.
5. Unlock the gun trigger lock by turning the switch so that it
is parallel to the handle.
Do not flex wrist while spraying.
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Keep steady
Overlap each stroke by about 30%. This will ensure an even coating.
When you stop painting, lock the gun trigger lock, turn the
pressure control knob counterclockwise to its lowest setting
and set the priming knob to PRIME. Turn the motor switch to
OFF and unplug the sprayer.
If you expect to be gone more than 1 hour, follow the short
term clean up procedure described in the CLEANUP section of
this manual.
Spraying Technique
Light Coat
Pull trigger
Approximately
10 to 12 inches
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© 1999 Wagner Spray Tech - All rights reserved.
6. Trigger the spray gun to bleed air out of the hose.
7. When paint reaches the spray tip, spray a test area to
check the spray pattern.
8. Use the lowest pressure setting necessary to get a good
spray pattern. If the pressure is set too high, the spray
pattern will be too light. If the pressure is set too low,
tailing will appear or the paint will spatter out in gobs
rather than in a fine spray.
Cleaning Filter During Painting Process
WARNING
Be sure to follow the pressure relief procedure when
shutting the unit down for any purpose, including
servicing or adjusting any part of the spray system,
changing or cleaning spray tips, or preparing for cleanup.
Filter top
This filter must be cleaned every time
you use your sprayer.
When using thicker paints, the filter
might need to be cleaned more often.
1. Perform Pressure Relief
Procedure (page 5).
2a. If you have a model GX-07 spray
Pin hole
gun, unscrew the fitting from the
bottom of the spray gun using an
adjustable wrench, making sure not to lose the spring.
2b. If you have a model GX-08 spray gun, unclip the trigger
guard from the filter housing by pulling outward from the
filter housing. Unscrew the housing.
Good spray pattern
Paint tailing pattern
If the Spray Tip Becomes Clogged
The spray gun is equipped with a reversible tip which allows
you to blow out any particles of old paint or other contaminants
that may obstruct the paint flow through the tip. If the spray
pattern becomes distorted or stops completely while the gun is
triggered on, follow these steps:
1. Release the trigger and lock the gun by turning the gun
trigger lock so that it is parallel to the gun body.
2. Rotate the reversible tip cylinder arrow 180° so that the
point of the arrow is toward the rear of the gun.
GX-08
Housing
GX-07
Filter
Spring
Filter
Trigger
guard
Fitting
3. Remove the filter from the spray gun housing and clean
with the appropriate cleaning solution (warm, soapy water
for latex paints, mineral spirits for oil-based materials).
4. Inspect the filter for holes (see Hole picture, above).
Replace if holes are found.
3. Unlock the trigger and squeeze it open, pointing the gun
at a scrap piece of wood or cardboard. This allows
pressure in the paint hose to blow out the obstruction.
When the nozzle is clean, paint will come out in a straight,
high pressure stream.
4. Release the trigger and re-lock it.
5. Reverse the tip so the arrow points forward again.
6. Unlock the trigger and resume spraying.
CAUTION
NEVER POKE THE FILTER WITH A SHARP INSTRUMENT!
5. Replace the cleaned filter, tapered end first, into the gun
housing.
Cleaning the Spray Gun Filter
The spray gun includes a filter to catch particles before they
reach the spray tip. If this filter becomes clogged or
obstructed it will reduce the flow of paint, changing the spray
pattern and possibly damaging the filter.
This filter must be cleaned daily. If the material being used is
old or contains hardened particles, then the filter should be
cleaned approximately every 4 hours.
Filter top
If the filter is not cleaned at the
proper time, it will plug from the top
down. When there is about 1 inch
of filter that isn't plugged, the heavy
flow of paint will blow pin holes in
the filter. Holes in the filter will
allow unwanted particles to get into
the spray tip, causing the spray tip
Pin hole
to clog.
© 1999 Wagner Spray Tech - All rights reserved.
Housing
NOTE: The tapered end of the filter must be loaded
properly into the gun. Improper assembly will
result in a plugged tip or no flow from the gun.
6a. For the GX-06/07, replace the spring and the fitting.
Tighten with an adjustable wrench.
6b. For the GX-08/10, replace the housing and snap the
trigger guard back into the housing.
Cleaning the Suction Set Screen
The screen at the bottom of the suction
set may also need cleaning. Check it
every time you change paint buckets.
Remove the screen by pulling it out of the
retainer with a plier. Clean the screen with
water or solvent and a soft-bristle brush.
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Long-term Storage
CLEAN UP
Overnight Storage
WARNING
Shutdown
Do not allow paint to build up on the motor or the motor
will overheat. Do not allow flammable solvents to come in
contact with the motor or they could ignite.
1. Lock the gun by turning the gun trigger lock parallel with
the gun body.
2. Turn the pressure control knob counterclockwise to the
minimum setting.
3. Turn the PRIME/SPRAY knob to PRIME.
4. Turn the motor switch to OFF and unplug the sprayer.
5. For latex materials only, pour 1/2 cup water slowly on the
top of the paint to prevent the paint from drying. For other
materials, seal the paint container with a piece of plastic
while the suction tube is still in the paint.
6. Wrap the spray gun assembly in a damp cloth and place it
in a plastic bag. Seal the bag shut.
NOTE: You will need a bucket, cleaning solution, a
toothbrush, a wrench and cleaning rags.
Clearing the Suction Tube
1. Lock the gun by turning the gun trigger lock parallel with the gun body.
2. Turn the pressure control knob counterclockwise to the
minimum setting.
3. Turn the PRIME/SPRAY knob to PRIME
4. Turn the motor switch to OFF and unplug the sprayer.
5. Remove the suction tube from the paint and hold it above a
bucket of water or solvent. Leave the return tube in the paint
bucket.
NOTE: If spraying with latex paint, use warm soapy
water for cleaning. If using oil or alkyd-based
paints, use mineral spirits or paint thinner.
CAUTION
Do not use mineral spirits or paint thinner on latex paint,
or the mixture will turn into a jelly-like substance which is
difficult to remove.
6. Plug the sprayer in and turn the motor switch to ON.
7. Turn the pressure control knob to 1/2 maximum pressure.
This will draw the remaining paint in the suction tube through
the pump, down the return tube and into the paint bucket.
8. Turn the pressure control knob counterclockwise to the
minimum pressure setting.
9. Trigger the gun to relieve pressure and lock the gun.
10. Remove the spray tip, guard and washer and place them
into a container of water or appropriate solvent for the
type of material with which you are painting.
11. Place the attached suction tube and return tube into a
container of water or appropriate solvent for the type of
material with which you are painting.
12. Increase the pressure to 1/2 the maximum pressure. Let
the water or solvent circulate for 2-3 minutes to flush paint
out of the pump, the suction tube and the return tube.
7. Place the sprayer in a safe place out of the sun for shortterm storage.
Startup
1. Remove the gun from the plastic bag.
2. Stir the water into the paint for latex materials. Remove
the seal from the paint bucket and stir the paint for all
other materials.
3. Check to be sure that the PRIME/SPRAY knob is set to
PRIME and that the pressure is completely reduced.
4. Plug sprayer in and turn the motor switch to ON.
5. Turn the PRIME/SPRAY knob to SPRAY and gradually
turn the pressure control knob clockwise to increase the
pressure.
6. Test the sprayer on a practice piece and begin spraying.
Clearing the Paint Hose
1. To save paint left in the hose, release the gun trigger lock,
place the gun body with the spray tip removed against the
paint container, and carefully trigger the gun into the container.
2. Turn the pressure control knob counterclockwise to the
minimum pressure setting.
3. Turn the PRIME/SPRAY knob to SPRAY.
4. Turn the pressure control knob slowly until paint starts to
flow into the bucket. As soon as the water or solvent
starts to come into the bucket, release the trigger.
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© 1999 Wagner Spray Tech - All rights reserved.
5. Change to clean water or solvent and continue circulating
for another 5 minutes to thoroughly clean the hose, pump
and spray gun.
6. Turn the pressure control knob counterclockwise to its
lowest setting.
7. Turn the PRIME/SPRAY knob to PRIME.
8. Trigger the gun to remove any pressure which may still be
in the hose.
9. Lock the gun by turning the gun trigger lock so that it is
parallel to the gun body.
10. Turn the motor switch to OFF.
Preparing the Sprayer for Long-term Storage
1. Remove the tip assembly and raise the suction set above
the cleaning solution.
2. Turn the motor to ON.
3. Turn the PRIME/SPRAY knob to SPRAY.
4. Turn the pressure control knob clockwise to 1/2 power and
allow the suction tube to run dry.
5. Remove the large suction tube from the inlet valve and
point the gun into the cleaning bucket.
6. Unlock the gun and trigger it into the cleaning bucket until
the hose is pumped dry.
7. Lock the gun and turn the pressure control knob
counterclockwise to its lowest setting.
8. Turn the PRIME/SPRAY knob to PRIME.
9. Lay the sprayer back on its handle so that the inlet valve is
facing upward.
10. Clean the threads of the inlet valve with a damp cloth.
11. Fill the inlet valve with a light household oil. Slowly
increase the pressure to distribute the oil through the pump.
Clearing the Gun
1. Remove the spray gun from paint hose using two
adjustable wrenches.
2. Remove the filter housing from the gun. Place the gun
and the filter assembly into a container of water or solvent
to soak.
3. Cover the paint container and set it aside.
4. Clean the spray tip and gun filter with a soft brush.
Assemble the spray tip in the cleaning position with the
arrow pointing to the back of the gun.
5. Attach the paint hose to the gun and tighten using two
wrenches.
6. Turn the motor switch to ON.
7. Unlock gun trigger by turning the gun trigger lock so that it
is parallel to the gun handle.
8. Turn the PRIME/SPRAY knob to SPRAY (
) and point
the gun to the side of the cleaning bucket.
12. Turn the PRIME/SPRAY knob to SPRAY to distribute the
oil.
13. Replace the large suction tube onto the inlet valve.
9. Trigger the gun and gradually turn the pressure control
knob clockwise to 1/2 pressure. Continue to trigger the
gun for approximately 30 seconds.
10. Turn the pressure control knob counterclockwise to its
lowest setting.
11. Turn the PRIME/SPRAY knob to PRIME.
12. Trigger the gun to remove any pressure which may still be
in the hose.
13. Lock the gun by turning the gun trigger lock so that it is
parallel to the gun body.
14. Turn the motor switch to OFF.
© 1999 Wagner Spray Tech - All rights reserved.
NOTE: Proper cleaning and oiling of the pump after
use are the most important steps you can take
to insure proper operation after storage.
14. Turn the pressure control knob counterclockwise to its
lowest setting.
15. Turn the PRIME/SPRAY knob to PRIME.
16. Trigger the gun to remove any pressure which may still be
in the hose.
17. Lock the gun by turning the gun trigger lock so that it is
parallel to the gun body.
18. Turn the motor switch to OFF.
19. Remove and clean the suction set filter in clean water or
the appropriate solvent. Use a soft brush. Return the
suction set filter to its original position.
20. Wipe the entire unit, hose and gun with a damp cloth to
remove accumulated paint.
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MAINTENANCE
NOTE: This spring is manufactured to a very specific
tension. Do not put in an unauthorized
substitute. See the paint pump assembly parts
diagram for the proper replacement part number.
An extra spring is included in the lit set.
Follow these procedures when encountering problems
indicated in the troubleshooting section.
Removing and Cleaning the Inlet Valves
1. Be certain that the sprayer is off.
2. Remove the inlet valve assembly using a 27 millimeter
socket or box end wrench.
3. Remove the seat and ball assembly.
4. Clean all parts thoroughly. If the ball or seat show any
sign of wear or damage, replace them with new parts.
This carbide ball must seal tightly against its seat for the
valve to function properly.
5. Cover all parts with a thin coat of light oil before
reassembling.
NOTE: You will need to align the ridge on the seat with
the groove in the pump housing when
reassembling.
3. Test movement of the valve by pushing on it from the
open end of the valve housing with a screwdriver or the
eraser end of a pencil. It should move about 1/16 of an
inch. If it does not move, it should be cleaned or
replaced.
6. Drop in the valve ball.
7. Insert the protector and spring and replace the valve body.
Be sure that the O-ring is positioned properly and that the
tongue on the cap fits inside the spring.
8. Tighten the valve body securely with an adjustable
wrench. Do not overtighten.
Seal
Seat
Ball
Spring
Ball Stop
O-ring
Valve Body
NOTE: The inlet valve must be oiled after every job.
This will reduce or eliminate priming problems
the next time the sprayer is used.
4. Thoroughly clean the valve assembly with water or the
appropriate solvent. Use a small brush.
5. If you have properly cleaned the valve and water drips out
of the bottom, the valve is worn and needs to be replaced.
A properly seated valve filled with water and held vertically
will not drip.
6. Install a new or cleaned valve in the pump block and then
fill the valve with light oil or solvent.
NOTE: Wear on the ball is almost impossible to
detect visually. To test for a worn outlet valve
assembly, turn the pressure control knob
clockwise to its highest setting and run water
only through the sprayer for 10 to 15 minutes
without triggering the gun.
If the valve is defective, the end cap will get
very hot to the touch. If it is functioning
properly, it will stay approximately the same
temperature as the water running through it.
Removing and Cleaning the Outlet
Valve
It may be necessary to remove and clean the outlet valve or to
replace parts inside the valve worn out through normal use.
1. Remove the outlet valve body with a wrench.
Tightening the PRIME/SPRAY Knob
Sometimes the two allen screws holding the PRIME/SPRAY
knob outer cover will vibrate loose. This allows the cover to
turn without changing the valve setting. If this happens,
loosen the screw with a 1/16 allen wrench, turn the knob to
SPRAY and tighten the screw.
2. Remove and clean the ball stop and small spring inside
the valve using a wire hook or tweezers. Replace the
spring if it is broken or worn.
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© 1999 Wagner Spray Tech - All rights reserved.
TROUBLESHOOTING
Problem
The sprayer does not start up.
Cause
Solution
1. The sprayer is not plugged in.
2. The ON/OFF switch is set to OFF.
3. A fuse is blown in the sprayer.
4. Low or no voltage is coming from the
wall plug.
5. The sprayer was turned off while still under
pressure.
6. The extension cord is damaged or has too
low a capacity.
7. The thermal overload on the sprayer is
tripped.
8. There is a problem with the motor.
The sprayer starts up but does not
draw in paint when the
PRIME/SPRAY knob is set to
PRIME.
1. The unit will not prime properly or has lost prime.
2. The paint bucket is empty or the suction
tube is not totally immersed in the paint.
3. The suction filter is clogged.
4. The suction tube is loose at the inlet valve.
5. The inlet valve is stuck.
6. The outlet valve is stuck.
7.
8.
9.
10.
The sprayer draws up paint but
the pressure drops when the
gun is triggered.
The PRIME/SPRAY valve is plugged.
The inlet valve is worn or damage.
There is a problem with the diaphragm.
The hydraulic oil level is low or empty.
1. The spray tip is worn.
2. The suction set filter is clogged.
3. The gun or spray tip filter is plugged.
1. Plug the sprayer in.
2. Turn the ON/OFF switch to ON.
3. Replace the blown fuse with the proper
replacement.
4. Properly test the power supply voltage.
5. Turn the PRIME/SPRAY knob to PRIME.
6. Replace the extension cord.
7. Allow the motor to cool and move the sprayer to a
cooler spot.
8. Take the sprayer to a Wagner Authorized Service Center.
1. Try to prime the unit again.
2. Immerse the suction tube in paint.
3.
4.
5.
6.
7.
8.
9.
10.
Clean the suction set filter.
Clean the tube connection and tighten it securely.
Clean the inlet valve.
Clean the outlet valve and replace any
worn parts.
Take the sprayer to a Wagner Authorized Service Center.
Replace the inlet valve.
Take the sprayer to a Wagner Authorized Service Center.
Take the sprayer to a Wagner Authorized Service Center.
4. The paint is too heavy or coarse.
5. The outlet valve assembly is dirty or worn.
6. The inlet valve assembly is damaged or worn.
1. Replace the spray tip with a new tip.
2. Clean the suction set filter.
3. Clean or replace the proper filter. Always keep
extra filters on hand.
4. Thin or strain the paint.
5. Clean or replace the outlet valve assembly.
6. Replace the inlet valve.
The spray gun will not shut off.
1. The inlet or outlet valve ball or ball seat is
worn.
2. Foreign matter or paint has built up between
the ball and the seat.
1. Take the sprayer to a Wagner Authorized Service
Center.
2. Take the sprayer to a Wagner Authorized Service
Center.
The spray gun leaks.
1. Internal parts of the gun are worn
or dirty.
1. Take the sprayer to a Wagner Authorized Service
Center.
The tip assembly leaks.
1. The tip was assembled incorrectly.
2. A seal is worn.
1. Check the tip assembly and assemble properly.
2. Replace the seal.
The spray gun will not spray.
1. The spray tip, the gun filter or the tip filter is
plugged.
2. The spray tip is in the CLEAN position.
1. Clean the spray tip, gun filter or tip filter.
The paint pattern is tailing.
The thermal overload tripped and
shut off the sprayer.
2. Put the tip in the SPRAY position.
1. The pressure is set too low.
2. The gun, the tip, or the suction filter
is plugged.
3. The suction tube is loose at the inlet valve.
4. The tip is worn.
5. The paint is too thick.
1. Increase the pressure.
2. Clean the filters.
1. The motor overheated.
2. The extension cord is too long or is too
small a gauge.
1. Allow to cool for 30 minutes.
2. Allow to cool for 30 minutes and replace the
extension cord with a shorter extension or a thicker
gauge cord.
3. Clean the paint from the motor.
4. Restart the sprayer in the PRIME mode.
3. Paint has built up on the motor.
4. The motor was started while the sprayer
was under pressure.
5. The sprayer was sitting in the hot sun.
3. Tighten the suction tube fitting.
4. Replace the spray tip.
5. Thin the paint.
5. Move the sprayer out of the sun.
NOTE: When the PRIME/SPRAY valve is on SPRAY and there is flow through the return tube, remove the
PRIME/SPRAY valve and clean or replace it.
NOTE: The electric motor should always be kept clean and dry. Paint acts as an insulator. Too much paint on the
motor will cause the motor to overheat.
© 1999 Wagner Spray Tech - All rights reserved.
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