Husky HDS420 Operating Instructions Manual page 5

Maintenance
(Continued)
4. Clean gaskets with a solvent soaked
rag. To prevent equipment damage,
Do not immerse gaskets or spray
gun body in solvents.
5. After using water to clean out water
based paints or materials, spray
mineral spirits through the gun to
prevent corrosion.
6. Use a non-silicone oil on all moving
parts when reassembling. Use
Vaseline ® or light grease on all
threaded connections prior to
storage.
7. Clean and flush gun thoroughly to
neutralize any contaminants
corrosive to the spray gun.
CLEANING A GUN USED WITH A PAINT
TANK
WARNING
!
Shut off the air supply to
the tank and release the
pressure in the tank.
1. Open the vent on the paint tank. If
using an external mix air cap, loosen
the cap slightly.
2. Reduce air pressure to 10-20 psi.
Hold a piece of wadded cloth tightly
around the air cap opening(s) and
pull the trigger. The air will back up
through the fluid tip and force the
paint out of the hose and back into
the tank.
3. Pour the paint from tank and use
solvent and rags to clean.
4. Put enough solvent into the tank to
wash the hose and gun thoroughly.
Close the tank and spray from the
gun until the solvent comes out
clean.
5. Remove and blow out the material
hose with compressed air to get rid
of any trace of solvent in the hose.
When blowing out
WARNING
!
the hose, the open
end should be aimed away from any
person to avoid blowing solvent into
the eyes or on the skin causing possible
injury.
PERIODIC CLEAN-UP
Due to dirty, lumpy paint etc., it may
be necessary to inspect and clean the
internal parts and the gun body.
1. Examine openings in air cap and
fluid tip. If clogged, remove any o-
rings and soak the air cap or fluid tip
in solvent.
2. A brush or toothpick or something
similar may be used to dislodge the
dried paint from holes and passages.
NEVER USE METAL OBJECTS TO
CLEAN PRECISELY DRILLED
PASSAGES. DAMAGED PASSAGES
WILL CAUSE IMPROPER
SPRAYING.
3. Remove and check the adjusting
needle for excessive wear at the tip
and straightness.
5
IMPORTANT: If the needle tip is worn
more on one side than the other, either
the needle is bent or the gun body has
been dropped or knocked out-of-line.
There are no adjustments that can be
made to a bent gun body. Test the
needle by rolling on a flat surface.
Replace if necessary.
4. Check and replace any damaged
o-rings and seals. O-rings and seals
can be wiped clean but not soaked in
solvent.
5. Unscrew packing nuts and replace
the packing ONLY if a leak will not
stop when the nut is tightened. Do
not over-tighten a packing nut
because this will restrict movement
of the needle.
6. Reassemble in reverse order of these
steps and use a non-silicone oil on
moving parts. Apply Vaseline
light grease on threaded joints and
hose connections.
STORING
1. When not using spray gun, turn the
fluid control knob counterclockwise
to open reducing spring tension on
needle fluid tip.
2. Spray gun MUST BE well cleaned
and lightly lubricated.
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