Series 670 MAINTENANCE
943070EA Edition 2018-06-19 19/
7.1 Maintenance intervals
Under clean operating conditions, the valve does not require any maintenance during the specified
cycle life. Contamination from the process may influence the function and requires more frequent
maintenance.
Before carrying out any maintenance, please contact VAT. It has to be individually decided whether
the maintenance can be performed by the customer or has to be carried out by VAT
www.vatvalve.com. The fabrication number on the valve has always to be specified. Refer to chapter
«1.1 Identification of product» for fabrication number.
7.2 Maintenance procedures
•
Open / close the service cover and valve cleaning. Refer to manual of customized process
chamber.
This task is described on customer side.
•
Removing the plate and plate seal replacement. Refer to chapter «7.2.1 Removing the plate and
plate seal replacement».
•
Replace the actuator shaft. Refer to chapter «7.2.2 Replace the actuator.
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