Maintenance Procedures - VAT 613 Series Installation, Operating, & Maintenance Instructions

Series 613
7.2

Maintenance procedures

Two maintenance procedures are defined for this valve. This are:
•
Replacement of shaft feedthrough seals and valve cleaning. Refer to chapter: «Replacement of
rotary feedthrough».
•
Replacement of Option board. Refer to chapter: «Replacement of Option board»
VAT can give the following recommendations for preventive maintenance:
Replacement of
Rotary
feedthrough seals
1087976EB
MAINTENANCE
Required frequency of cleaning and replacement of seals is depending on
process conditions.
1)
unheated
2'000'000 cycles
1)
Those figures are reference values for clean conditions under various
temperatures. These values do not include any impact of the process. Therefore
preventive maintenance schedule has finally to be checked for the actual
process conditions.
Below pictures are sample pictures. Although there may be different variants of
the valve, the assembly procedure stays the same.
ISO-KF with heating
heated ≤ 80 °C
1)
6 months but
max. 2'000'000 cycles
ISO-F
Edition 11.08.2022
1)
heated > 80 °C
3 months but
max. 2'000'000 cycles