Anest Iwata MSU B193, Use And Maintenance Manual, Page: 31 / 48

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7. TROUBLESHOOTING
Problem Cause Check Solution
1. The air pressure a) The three-way valve is not in the a) Make sure the three-way valve is in the a) Adjust the three-way valve in
does not increase. proper position. proper position the proper position
b) The air regulator is not open. b) Check the proper operation of the b) If it is closed, open it.
regulator If it is damaged, replace it.
c) Insufficient air pressure. c) Check that the indicator of the c) If the compressor does not
pressure gauge works properly. supply enough air pressure,
replace it with one of greater
capacity.
2. The paint does not a) Clogged paint filter or paint a) By opening the recirculation valve the a) The paint circuit is obstructed
flow out of the gun circuit paint does not flow out from the pump inlet to the fluid
pipe fitting. Check the paint
circuit and remove the material
obstructing the passage.
b) By opening the recirculation valve the b) The paint course, from the gun
paint flows out regularly, but not when nozzle to the fluid pipe fitting,
pulling the gun trigger. is blocked.
Check for the obstructed point
and remove the clogging; this
problem is usually caused by
the obstruction of the gun filter.
c) Clogged nozzle c) Remove the nozzle and pull the trigger c) If the paint flows out it means
of the gun that the nozzle is clogged. Free
the nozzle with a steel pin and
clean it with a non-metallic
brush soaked in the suitable
solvent.
d) Safety stop jammed d) Unlock the safety valve
3. The pump does not a) Presence of air inside the a) Repeat the activation
work properly pumping units. operations.
b) The pneumatic limit switch is b) Replace.
worn out.
c) The delivery valves are ditry c) Remove and check conditions. c) If they are dirty, clean them;
or worn out. it they are damaged, replace
them.
4. The pump does a) Some air got inside the a) Make sure the dip tube is a)Tighten the dip tube fitting
not stop paint ducts properly connected
b) Some air remains inside b) Make sure the paint is in good b) If the paint is in standard
the paint ducts condition and that the dip tube condition increase its level
suction filter set is fully dipped at least until it fully covers the
in the product to be pumped. dip tube filter set.Then, carry
out the start-up operations
relative to the release of
air from the paint ducts.