Ransburg Evolver 303 Dual Purge Solvent Robotic Applicator A12374-XXX - Manual (Page 36)

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Evolver 303 Dual Purge Robotic Atomizers - Maintenance
8. Remove fluid nozzle [32] by unscrewing
counter-clockwise. Inspect o-ring [30] and all pas-
sages 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 electrode assembly
[31] back into the spray head assembly. Apply
Loctite #222, low strength (purple) thread-locker, to
the threads of the electrode assembly before reas-
sembly.
10. Screw fluid tip [34] back into place. Hand tighten
first, then with a small wrench, tighten an additional
30 degrees.
11. Replace air cap locator [33], air cap [35], and
air cap retainer [36].
12. Apply a thin film of petroleum jelly to valve
and
needle springs [2] and [3]. Install the springs back
into the end cap and the spray head assembly.
13. Screw end cap [1] back on.
Current Output Test
1. Clean and blow out all fluid passages with non-
conductive solvent.
2. Remove from robot and perform bench test using
a spare tubing bundle.
3. Turn the control unit power ON.
4. Activate high voltage and slowly approach the
applicator electrode with ground hook or wire.
5. Monitor the current output on MicroPak. Cur-
rent should rise as ground approaches. At approxi-
mately 85 microamperes, the MicroPak will shut off.
The OVERCURRENT indicator should come on.
The spray head can be removed from assembly as
shown in Figure 13a for cleaning and service.
> The fluid tip [34] should always be installed
and tightened before installing the needle
and valve springs.
NOTE
> After tightening the fluid tip, always check to
see if the proper gap (1/16") between the needle
nuts and air valve stem occur, before installng the
needle and valve springs back into the head.
C A U T I O N
!
Amyl Acetate
Methyl Amyl Acetate
Toluene
Xylene
High Flash Naptha
Mineral Spirits
Non-Conductive (Non-Polar)
POLAR AND NON-POLAR SOLVENTS
Moderately Conductive Extremely Conductive (Polar)
Methyl Isobutyl Ketone
Ethyl Acetate
Methyl Ethyl Ketone
Butyl Carbitol
Methanol
Carbitol
Diacetone
Butyl Alcohol
Acetone
Butyl Cellosolve
AA-08-01.1