Type of Malfunction
Possible Cause
Correction
No product or too little
– Product feed line and/or pneumatic hose • Connect the product feed line correctly.
product.
not connected correctly or kinked.
If kinked, replace it.
– Control pressure not adequate. Control
• Check and adjust the control pressure.
pressure must be between 5 and 7 bar.
– Curing in the product feed line or in the
• Replace the product feed line and/or
dispensing needle.
the dispensing needle.
– Curing in the diaphragm valve.
• Replace the shutoff valve
4
and the
diaphragm
3
.
– Controller incorrectly adjusted.
• Check the controller setting (see
operating manual for the controller).
– Product reservoir not switched on,
• Check the reservoir (see operating
depressurized or pressure is too low.
manual for the product reservoir).
Diaphragm valve does
– Actuator
2
of the valve is contaminated
• Replace the actuator
2
and the
not open.
with product.
diaphragm
3
.
Dispensing operation
– Actuator
2
and shut off valve
4
are
• Back off actuator from shut off valve,
is irregular.
tightened too much.
proceeding in small steps, 90° max
(1/4 turn).
Dispensing sequence
– Disassemble valve and push button on
• Replace the actuator
2
and the
too short despite long
controller to actuate the actuator:
diaphragm
3
.
time setting.
> air escapes at the plunger.
7. Troubleshooting
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