9.0 INFORMATION REGARDING FAULTS
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TOR.VM.--.M.A.0518.EN Issue: A
05.18
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9.2 Check-list in case of fault
If you have been unable to solve the problem on the valve even after having carried out the operations sug-
gested in paragraph “Trouble-shooting” please contact the plant technician/installer/or the Manufacturer.
If technical assistance is required, in addition to the valve data, the plant technician/installer or Manufacturer
will also need information concerning the plant in which the valve is installed, its installation and its working, for
better identication of the problem that has occurred.
Obviously many of the checking operations which are requested have already been performed in the various
steps during installation, testing and start-up of the valve concerned.
Danger - Warning
Before carrying out any operation “set the valve concerned in safety” (see “Glossary and termino-
logy”), operate according to the indications on the “Operation and Maintenance Manual” and in accor-
dance with and in compliance with the standards in force as regards health and safety.
1) Information necessary
a) Code and serial number.
b) Photo that shows the application type as well as the plant.
c) Description of the problem.
d) Operation sequence (solenoid valves actuating sequences, signals management).
e) Conveying pressure
f) Is the duct cleaned prior to line switching?
2) Checking the electrical part
a) Supply voltage on the solenoids.
b) Voltage on the pressure switch contacts.
3) Checking the pneumatic parts
a) Pressure fed to pneumatic components.
b) Cases of sudden pressure changes, obstruction on the air ducts.
c) Compressed air treatment.
4) Checking the product
a) Type of product.
b) Density and particle size, abrasiveness, hygroscopicity.
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