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Procedures – Ransburg Evolver 303 Dual Purge Solvent Robotic Applicator A12374-XXX User Manual

Page 35

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Evolver 303 Dual Purge Robotic Atomizers - Maintenance

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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

!

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Failure to use a non-polar solvent may

cause a decrease in voltage at the tip of the

applicator. This will significantly decrease

transfer efficiency.

C A U T I O N

!

>

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

!

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 applicator (including the air cap) 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

Applicator Cleaning/Service

(See Figures 13a and 13b)

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

and PT. Allow all of the fluid to drain from the spray

applicator fluid passages.

3. Clean the exterior surfaces of the spray applicator

with a solvent soaked rag. As long as the applicator

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 applicator's surface. (See "Polar & Non-Polar Sol-

vents Chart" in the "Maintenance" section regarding

proper solvent selection.)

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 end 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.

AA-08-01.1