WAGNER Power Painter Owner's Manual - Caution
© 2001 Wagner Spray Tech. All rights reserved.
7
English
MAINTENANCE
Parts of your sprayer wear out with use and require regular
replacement. They include the swirl valve, piston and spring.
These parts are not covered by your sprayer warranty.
More abrasive materials such as latex paints and stains cause
these parts to wear out faster than less abrasive materials such
as oil-based paints and stains, thin stains and sealers.
REPLACING THE SWIRL VALVE
The swirl valve is shaped to cause the material to spin as it
comes out of the sprayer. The spinning breaks the material up
into a fine spray. As more material goes through the swirl valve,
it wears out the valve and the shape of the valve changes.
When it changes too much to produce a good spray pattern, the
valve needs to be replaced.
1. Make certain that the sprayer is unplugged.
2. Turn the spray tip counterclockwise and remove.
3. Pull the old swirl valve out of the pump housing and insert a
new one.
4. Place the spray tip over the new swirl valve and tighten it
securely by hand.
NOTE: Make sure to tighten all spray tips firmly by
hand. If the spray tip is not tightened firmly
enough, the sprayer could leak or the tip could
be damaged. Do not use a tool to tighten the
spray tip. If the tip is too tight, it may be
damaged.
Spray tip
Swirl valve
Pump
housing
opening
NOTE: The swirl valve that comes with your sprayer
has a clear base. It is to be used with latex
and oil-based paints only.
If you will be spraying lacquers, make sure to
use the optional swirl valve designed for
lacquers, available for purchase by calling our
toll free number. It has a grey base.
1
1
2
3
Front view of a good swirl valve.
2
Front view of a swirl valve after spraying 7-10 gallons of
latex paint. Replace.
3
Front view of a swirl valve after spraying 7-10 gallons of
latex stain. Replace.
REPLACING THE PISTON AND SPRING
The average life of a piston and spring will vary depending on
the types of material being sprayed.
1. Make certain the sprayer is unplugged.
2. Turn the spray tip counterclockwise until it is removed.
Be careful not to lose the swirl valve.
3. Pull out the swirl valve.
4. Turn the locking nut counterclockwise until it is removed.
5. Slide the pump housing assembly off of the sprayer.
6. Pull the piston and spring off of the pump housing.
7. Pull the spring off of the piston and throw away the old piston.
8. Slide the spring onto the front end of the new piston.
9. Insert the piston into the back end of the pump housing.
10. Insert the pump housing assembly into the front of the sprayer.
11. Place the locking nut onto the motor housing.
12. Press in while turning the locking nut clockwise and tighten
firmly by hand.
Do not cross-thread the locking nut. Make certain it is
threaded correctly before tightening. Make certain that the
pump housing is pushed far enough into the sprayer and
that the locking nut is screwed on tightly.
13. Insert the swirl valve into the front end of the pump housing.
14. Place the spray tip onto the pump housing and turn it
clockwise
until it is tightened securely.
CAUTION
Piston
Spring
Pump housing
Locking nut
Swirl
valve
Spray tip
Locking nut
Spray tip
Swirl valve
Pump
housing
opening
NOTE: Replace the piston if the sprayer takes longer
than 15 seconds to prime when well
lubricated, or if there is an excess amount of
material leaking, refer to the troubleshooting
suggestions listed in this manual. Replace the
spring if you notice that it is broken when you
clean the sprayer.