Maintenance; Replacing The Swirl Valve; Replacing The Piston And Spring - WAGNER POWER PAINTER Owner's Manual

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.
Front view of a good swirl valve.
1
Front view of a swirl valve after spraying 7-10 gallons of
2
latex paint. Replace.
Front view of a swirl valve after spraying 7-10 gallons of
3
latex stain. Replace.
1 2
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. Make certain that the sprayer is unplugged.
2. Turn the spray tip counterclockwise and remove.
Spray tip
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.
© 2001 Wagner Spray Tech. All rights reserved.
3
Pump
housing
opening
Swirl valve

REPLACING THE PISTON AND SPRING

The average life of a piston and spring will vary depending on
the types of material being sprayed.
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.
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.
Spray tip
3. Pull out the swirl valve.
4. Turn the locking nut counterclockwise until it is removed.
Locking nut
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.
Pump housing
Locking nut
Spray tip
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.
CAUTION
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.
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Pump
housing
opening
Swirl valve
Piston
Spring
Swirl
valve
English