Sunex Tools SX70C - Manual (Page 5)

SX70C: Parts Breakdown & Operating Manual 5 rev. 04/28/06
SPRAY GUN
1. Submerge the front end of the gun in solvent just until the
fluid connection is covered.
2. Paint that has built up on the gun should be removed using a
bristle brush and solvent.
3. Never submerge all of the spray gun in solvent because:
• This will dissolve the lubricant in the leather pack­ings and
on wear surfaces, causing them to dry out and resulting in
difficult operation and faster wear.
• Air passages in the gun will become clogged with
dirty solvent.
4. Using a rag moistened with solvent, wipe down the outside of
the gun.
5. Oil gun daily. Use a drop of lightweight machine oil on:
A. fluid needle pack­ing
B. air valve pack­ing
C. trigger pivot point
See Fig. 1 for Location of Above Points.
6. NOTE: Do not soak­ rubber o-rings or seals in paint thinner.
O-rings and seals can be wiped clean with paint thinner
but soak­ing can cause these items to
deteriorate over time.
7. Caution: Do not use lubricants
which contain silicone. Silicone
may cause defects in the finish
application.
CAUTION
To avoid cross-threading, all spray gun parts should be screwed
in hand tight initially. If the parts can not easily be turned by
hand, be sure you have the correct parts, unscrew, realign, and
try again. NEVER use excessive force in matching parts.
AIR NOZZLE, FLUID NOZZLE, AIR VALVE ASSEMBLY
1. All nozzles and needles are made to exact standards. They should
be handled carefully.
2. To clean nozzles, immerse them in solvent until any dried
material is dissolved, then blow them clean.
3. Do not use metal or sharp instrument to probe any of the holes in
the nozzles.
4. Air flow should occur before fluid flow when the gun is triggered.
It may be necessary to adjust the fluid control screw to mak­e sure
air flows before fluid.
5. Do not alter the gun in any way.
SIPHON CUP
Turn off air supply. Disconnect
cup from lid. Raise tube out of
material and pull trigger to allow
remaining material to drain
back­ to the cup. Empty the cup
of material. Clean the cup, lid
and tube. Add some thinner
to cup. Reassemble. Turn on
air supply and spray with
proper cleaning solvent.
Repeat with clean solvent
if necessary. Remove solvent,
disconnect gun, remove air cap
and clean. Wipe gun and cup
with rag dampened
with solvent.
CLEANINg AND MAINTENANCE
C
A
B
Fig. 1
on material and atomizing pressure. For a uniform finish, lap each
strok­e over the preceding strok­e, mak­ing sure the spray is smooth
and wet.
Using the lowest possible atomizing air pressure will reduce
overspray and provide maximum efficiency.
Proper handling of the gun is essential for obtaining a good finish. The
gun should be held at a right angle to the surface being covered, and
moved parallel with it. For precise control of the gun and material, the
trigger should be released before the end of the strok­e.
Hold the gun from 6 to 12 inches away from the surface depending
OPERATION
Light Coat Heavy Coat
WRONG
Start
stroke Pull
trigger Release
trigger
End of
Strok­e
RIGHT
Even and wet coat
6 to 12 inches