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

Figure 7: Polar and Non-Polar Solvents
8. Remove fluid nozzle [32] by unscrewing count-
er-clockwise. Inspect o-ring [30] and all passages
for build up or damage. Clean or replace as neces-
sary. Lubricate and reinsert o-ring into gun 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 gun barrel after
tightening.
NOTE
9. After cleaning, insert the electrode assembly
[31] back into the spray head assembly. Apply
adhesive #222, low strength (purple) thread-lock-
er, to the threads of the electrode assembly before
reassembly.
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
gun electrode with ground hook or wire.
5. Monitor the current output on the MicroPak.
Current should rise as ground approaches. At
approximately 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 8 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
Evolver Solventborne Robotic Atomizers - Maintenance
27
Ransburg
AA-03-02.12