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29
INCONVENIECE
CAUSE
CHECK
SOLUTION
1. The pressure does not
increase.
The ball valve is not in the proper
position.
Make sure that the ball valve is in
the proper position.
Adjust the ball valve in the proper
position.
The air regulator is not open.
Check the proper functioning of the
regulator.
If it is closed, open it.
If it is damaged, replace it.
Insuffient air pressure.
Check the proper functioning of the
manometer of pressure gauge.
If the compressor does not supply
enough air pressure, replace it with
one of greater capacity.
2. The paint does not flow
out.
Clogged paint filter or paint circuit.
Opening the recirculation valve the
paint does not flows out.
The circuit is obstructed from the
pump inlet to the fluid hose fitting.
Check the paint circuit and remove
the material obstructing passage.
Opening the recirculation valve the
paint flows out regularly, but not
when pulling trigger.
The paint course, from the gun
nozzle to the fluid hose fitting, is
blocked. Check for the obstructed
point and remove the clogging; this
inconvenience is usually caused by
the obstruction of the gun filter.
Clogged nozzle.
Remove the nozzle and pull the
trigger of the gun.
If the paint flows out it means that
the nozzle is clogged. Free the
nozzle with a cleaning needle and
non-metallic brush soaked in a
compatible cleaning liquid.
Jammed safety stop.
Unlock the safety valve.
3. The unit does not work.
The air does not supply the pneu-
matic motor.
Check the air supply hose.
Replace if damaged or clogged.
The equipment has a technical
problem.
Separate the air motor from the
pumping group and test it using a
different air hose.
If the motor is running properly,
follow the instruction provided in the
solution column, point 2.
If the motor is not running pro-
perly, disassemble the cylinder
and inspect it. In case of special
anomalies, ship it to our Customer
Technical Service.
4. The unit does not stop.
Some air got inside the paint
ducts.
Make sure that the dip tube is pro-
perly connected.
Tighten the dip tube fitting.
Some air remains inside the paint
ducts.
Make sure that paint is the good
conditions and that the dip tube
suction filter set is fully dipped in
the product to be pumped.
If the paint is in a standard condi-
tions increase its level at least until
it fully cover the dip tube filter set.
Then carry out the start-up ope-
ration relative to the release of air
from the paint ducts.
Damaged or dirty valves (upper
and lower).
Disassemble both and inspect both
the valves and the balls.
Clean them if they are encrusted
with solidified paint residues.
Otherwise, if they are damaged
replace them.
The lower lips seals (inside the
suction tube ref.58) are not tight.
Disassemble suction tube ref. 58
and check wear conditions.
If it is enough, adjust them.
Otherwise, if they are worn out,
replace them.
Leak from the paint ducts.
Inspect all paint ducts.
If any leakge is found, see to its
fixing.
The recirculation valve is not clo-
sed.
Close the recirculation valve.
10. TROUBLESHOOTING
Содержание MSU-323 C
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