MAINTENANCE Series
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Edition 2019-05-03 963283EA
7 Maintenance
WARNING
Unqualified personnel
Inappropriate handling may cause serious injury or property damage.
Only qualified personnel are allowed to carry out the described work.
WARNING
Valve opening
Risk of serious injury.
Human body parts must be kept out of the valve opening and away from moving parts.
Disconnect power on controller before doing any work.
CAUTION
Hot valve
Heated valve may result in minor or moderate injury.
Do not touch valve and heating device during operation. Once heating is switched off
(valve and system) await until the valve is cooled down complete before doing any
work.
NOTICE
Contamination
Gate and other parts of the valve must be protected from contamination.
Always wear clean room gloves when handling the valve.
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. Please write
down the fabrication number of the valve before contact VAT. Refer to chapter «Identification of
product» for fabrication number.
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