Rev. 1.2
Assembly Instructions - MPP-02 Micro Point Pulse Valve
Page 13 of 20
Walther Systemtechnik GmbH
– D 76726 Germersheim
phone: +49 (0)7274-7022-0 fax: +49 (0)7274-7022-91
http://www.walther-2000.de
8 Troubleshooting
8.1 General Information
IMPORTANT
First check all supply lines for connection and serviceability.
In case of serious problems that cannot be resolved, please contact the Walther Systemtechnik GmbH cus-
tomer service.
8.2 Failure
Fault
Possible Cause
Action
Nozzle needle does
not open
Not enough control air supplied
Check if enough control air available (5 -
6 bar).
Leakages
Check if O-Ring (4.2) or (5.1) is
defective.
Check, if needle is sticky within the sealing
screw (5.0 /16.0).
Disassemble and clean.
Needle stroke is set too low.
Check if needle stroke is correctly set.
9 Taking out of Service
9.1 Short Interruption
A short interruption (15 min or more) has to be followed by a fine spraying.
IMPORTANT
Please follow the Operating Manual!
9.2 Long-term Interruption
The following has to be observed for a long-term interruption of the device/machine:
Depressurize material supply lines
Clean nozzle (1.0) with a special thinner and a soft cloth. Make sure that no cloth fibers are left on the
nozzle tip.
IMPORTANT
Please follow the maintenance guidelines!
9.3 Final Shutdown of System / Device
The following is important for a shutdown of the machine / device:
Clean pulse valve with a special thinner.
IMPORTANT
Please follow the maintenance guidelines!
