Ransburg Evolver NE A11279-XX, A11281-XX, A11775-XX, A11776-XX - Manual (Page 27)

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Evolver NE Solventborne Robotic Atomizers - Maintenance
PROCEDURES
Applicator Cleaning/Service
(See Figure 5)
1. Flush the paint supply line and the applicator 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 applicator.
Allow all of the fluid to drain from the spray applica-
tor fluid passages.
3. Clean the exterior surfaces of the spray applicator
with a solvent soaked rag.
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.
> 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
5. Remove the air cap retainer [36] and air cap
[35]. Soak in a 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 solvent.
7. Tightly grip the plastic needle [6] and unscrew
counter-clockwise to remove the front needle tip.
A short piece of H-2339 tubing (1/4" OD x 0.175" ID)
pressed over the front needle will assist in unscrew-
ing the assembly. If required, use needle nose pliers
with masking tape or duct tape. Carefully clean with
a solvent. Replace any parts that show signs of wear
or damage.
> 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
!
8. Remove fluid nozzle [32] by unscrewing counter-
clockwise. Inspect o-ring [30] and all passages for
build-up or damage. Clean or replace as necessary.
Lubricate and reinsert o-ring into applicator barrel
and reinstall fluid nozzle. Torque fluid nozzle to 25
lbs•in (2.82 Nm).
> There should be a small gap between the
fluid nozzle and the applicator barrel after
tightening.
NOTE
9. After cleaning, insert the front needle tip [31] back
into the spray head assembly. Apply Loctite #222, low
strength (purple) thread-locker, to the threads of the
tip assembly before reassembly.
> DO NOT use the A11218-00 tip assembly [31]
with electrostatic voltage. The electrode tip is for
non-electrostatic applications ONLY.
W A R N I N G
!
AA-05-01.5