Ransburg Evolver Solvent Robot Applicator 79190-XXXXXXXX - Manual (Page 30)

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 "Mainte-
nance" 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
passages.
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 tub-
ing (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 distor-
tion 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
!
Evolver Solventborne Robotic Atomizers - Maintenance
26
Ransburg
AA-03-02.12