ASM 248772 A series, Operating Instruction

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310749
Troubleshooting
PROBLEM CAUSE SOLUTION
Pump cycles but paint only
dribbles or spurts when
trigger is pulled Pressure is set too low. Turn Pressure Control Knob to the right (clockwise) to
increase pressure.
trigger is pulled.
Tip is clogged. Clear tip. See your gun manual.
Spray tip is too large or worn. Replace tip.
Pressure is set at maximum,
but cannot achieve a good
spra pattern Extension cord is too long or
not a heavy enough gauge. Replace extension cord.
g
spray pattern.
Tip is too large for sprayer. Select a smaller tip.
Tip is worn beyond capability
of sprayer. Replace tip.
Inlet screen is clogged. Clean debris off inlet screen.
Pump valves are worn. Check for worn pump valves as follows: Prime sprayer with
paint. See
Priming, page 9 . Trigger gun momentarily. When
trigger is released, pump should cycle momentarily and stop. If
pump continues to cycle, pump valves may be worn. Replace
check valves.
When paint is sprayed, it runs
down the wall or sags Coat is going on too thick. Move gun faster.
down the wall or sags.
Choose tip with smaller hole size.
Choose tip with wider fan.
Make sure gun is far enough from surface.
When paint is sprayed, coat is
not covering Coat is going on too thin. Move gun slower.
not covering.
Choose tip with larger hole size.
Choose tip with narrower fan.
Make sure gun is close enough to surface.
Motor is hot and runs
intermittently Vent holes in shroud are
plugged or sprayer is Keep vent holes in shroud clear of obstructions and overspray,
and keep sprayer open to air
intermittently.
NOTE: This is a thermal
plugged, or sprayer is
covered. and keep sprayer open to air.
NOTE: This is a thermal
overload condition. Motor will
automatically shut off due to
excessive heat.
Extension cord is too long or
not a heavy enough gauge. Replace extension cord.
excessive heat.
See Startup Hazard After
Thermal Overload, page 2.
Damage can occur if cause is
Unregulated electrical
generator being used has
excessive voltage. Use electrical generator with a proper voltage regulator.
Sprayer requires a 120V AC, 60 Hz, 1500-Watt generator.
Damage can occur if cause is
not corrected.
Sprayer was operated at high
pressure with small tip, which
caused frequent motor starts
and excessive heat build up. Decrease pressure setting, or increase tip size.
Building circuit breaker opens
after sprayer operates for 5 to
10 minutes Too many appliances are
plugged in on same circuit. Free up circuit (unplug things), or use a less busy circuit.
10 minutes.
OR
Building circuit breaker opens
as soon as sprayer is plugged
Extension cord is damaged or
too long or not a heavy
enough gauge.
D
Plug in something that you know is working to test
extension cord.
D
Replace extension cord.
as soon as sprayer is plugged
into outlet, and sprayer is
turned on.
Sprayer power cord is
damaged. Check for broken insulation or wires. Replace power cord if
damaged.
Fan pattern varies
dramatically while spraying or
sprayer does not turn on
promptly when resuming
spraying. Pressure control switch is
worn and causing excessive
pressure variation. Return sprayer to ASM authorized service center.
Spray comes out of gun in
two thick streams. Reversible tip is in CLEAN
position. Rotate arrow–shaped handle on tip so it points forward.