31
308611
Troubleshooting
Air and Bead System
PROBLEM
CAUSE
SOLUTION
Belts squealing during
engine startup
Compressor belt needs tightening or
replacing.
See
Air Compressor Belt Replacement
on
page 22.
Paint guns not spraying
when bead tank is empty
All of air supplied by air compressor
is rushing out of bead gun nozzles.
In turn, system air pressure cannot
build enough to trigger guns. This is
normal.
Fill bead tank with beads.
No system pressure
Compressor bypassing air continu-
ously
1. Check that silver switch on top of unloader
valve (41) is turned on its side
2. Lift up and down silver switch on top of
unloader valve (41). This might loosen a
sticky valve.
3. Replace unloader valve (41)
Beads not dispensing
properly
Excessive water or moisture in bead
tank
1. Replace old shower cap style bead tank
cover with new plastic cover (129). Old
covers leak water.
2. Only pressurize glass beads when dispens-
ing. Small air leaks at gun nozzle or air
fittings cause continuous moisture to be
pumped into tank.
3. For areas of extreme humidity a Bendix air
dryer or equivalent may be installed in air
line to bead tank. Typically when beads are
used continuously, they do not spend
enough time in tank to collect enough mois-
ture to be a problem. Usually it is continuous
stencil painting for long periods of time with
little bead consumption and high humidity
that can cause problems.
Low system pressure
Excessive air leaks
1. Fix all air leaks before they become a prob-
lem. Air leaks can eventually starve systems
air supply. RoadLazer will supply enough air
to spray 4 bead guns at 30 psi (207 kPa).
2. Most air leaks occur at bead tank outlet
fitting. If fitting leaks air, completely remove
it, and use thread tape and liquid thread
liquid sealant when you reinstall it.
No beads dispensing
Beads have solidified
1. Never store RoadLazer with glass beads in
tank for long periods of time.
2. Remove aluminum fitting from bottom of
tank. Flush out solidified beads
3. Use air hose or water hose to break up and
remove solidified beads from tank