29
308611
Troubleshooting
Paint Guns and Bead Guns (continued)
PROBLEM
CAUSE
SOLUTION
Bead guns not synchro-
nizing with paint guns
Out of calibration
1. Follow calibration procedure in Programmable
Skipline Controller manual 308616.
2. If beads start before paint, add delay time to Bead
ON Delay. If paint starts before beads, add equal
delay time to both Paint ON and Paint OFF Delays
(this does not affect paint skip line length). Usually
0.01 to 0.08 sec. time delays are all that is needed
with RoadLazer.
3. If beads end before paint, add delay time to Bead
OFF Delay. If beads end after paint, add equal delay
time to both Paint ON, Paint OFF and Bead ON
Delays. This shifts every thing forward. Usually 0.01
to 0.08 sec. time delays are all that is needed with
RoadLazer.
Paint guns not turning off
immediately or at all
Valve needle
1. Spray needle with light coat of WD-40
R
. Use air
hose or water hose to break up and remove solidi-
fied beads from tank.
2. Replace needle, seat and packings. Repair kit
238339.
Gun arm wobbling or
hopping excessively
Swivel nut
Gun arm wobbles
1. Remove dust cap (348)
2. Tighten boom arm swivel nut (304) until swivel has
slight restriction
Gun arm hops
1. Lower air pressure in gun arm wheel
2. Replace damaged gas shock (307)
Excessive overspray on
gun arm wheel
Paint guns out of position
1. Angle paint guns back 15 to 20
_
2. Coat wheel and gun arm parts with non-stick cooking
oil, light oil, silicon, or Auto Mask ZEP to prevent
paint from sticking to them.
Pulsation in spray pattern Low or erratic pressure in
paint pump
1. Check paint supply and suction inlet screens.
2. Replace spray tips.
3. Check outlet filter.
4. Remove nylon suction line (68) from pump inlet and
remove pump foot valve (18, manual 308650).
5. Stroke pump so that piston is down. Look up into
pump and remove all paint debris.
6. Check nipple (116) for plugging.
7. Replace packings. Clean and service intake valve
and piston valve.
