Ransburg Evolver Solvent Applicator 79190-XXXXXXXX - Manual (Page 31)

26
Evolver Solventborne Robotic Atomizers - Maintenance
2. Turn the MicroPak Control Unit ON! Energize
high voltage.
Shut-Down (Or at Shift End)
1. Turn the MicroPak Control Unit OFF.
2. Flush the lines and allow the solvent to remain
in the lines. See "Procedures" in the "Maintenance"
section.
3. Wipe the gun and robot wrist with a cloth and
a suitable, clean non-polar solvent.
Weekly
1. Check the entire system for damage, leaks and
paint accumulation.
2. Clean the atomizer assembly.
3. Conduct a current output test. See "Proce-
dures" in the "Maintenance" section.
PROCEDURES
Gun Cleaning/Service
(See Figure 8)
1. Flush the paint supply line and the gun paint
passages using a solvent which is compatible with
the material being sprayed. Continue to flush until
all traces of paint are gone.
2. Turn off the solvent supply, actuate paint push-
out air at color changer and trigger the gun. Allow
all of the fluid to drain from the spray gun fluid pas-
sages.
3. Clean the exterior surfaces of the spray gun
with a solvent soaked rag. As long as the gun is
intact, a polar solvent may be used for all cleaning,
however, after cleaning, wipe off all surfaces with a
non-polar solvent to reduce conductive residue on
the gun's surface. (See Figure 7 regarding proper
solvent selection.)
> Failure to use a non-polar solvent will
cause a decrease in voltage at the tip of the
gun. This will significantly decrease transfer
efficiency.
C A U T I O N
!
4. Remove end cap [1]. Removing the end cap
releases tension on all internal spray head compo-
nents. Remove needle spring [2] and valve spring [3],
which are loose after removing the piston cap.
5. Remove the air cap retainer [36] and air cap [35].
Soak in a non-polar solvent if necessary. If paint
remains in the air cap holes, clean with a
toothpick or similar soft wood object. Air caps are
best cleaned in an ultrasonic cleaner.
6. Remove the air cap locator [33] and fluid tip [34].
Clean using a non-polar solvent.
7. Tightly grip the plastic needle [6] and unscrew
counter-clockwise to remove the front electrode
needle assembly. A short piece of H-2339 tubing
(1/4" OD x 0.175" ID) pressed over the front needle
will assist in unscrewing the assembly. If required, use
needle nose pliers with masking tape or duct tape.
Carefully clean with a non-polar solvent. Replace any
parts that show signs of wear or damage.
> Never attempt to clean the air cap holes
with a wire or other metal object. Doing so
may damage the air cap, resulting in distortion
of the spray pattern.
C A U T I O N
!
> If using needle nose pliers to unscrew the
front needle, be very careful. Do not grip on the
tapered sealing surface. If the pliers slip, they
could damage the tapered sealing surface of
the needle.
C A U T I O N
!
AA-03-02.11