Maintenance
Maintenance
6
4
6.
Check that the V-Ring is properly in position and that there are no dents.
Done
NOTE
Used seals must not be used again, since the proper function of the seal can no longer
be ensured.
Lubricating Seals and Threads
CAUTION
Damage to seals and threads
Damage to seals and threads can result in a malfunction.
Ensure that an adequate film of lubricant is applied. No grease residues must be
visible after fitting the complete valve.
For product contact seals only use suitable greases and oils.
Observe the safety information sheets issued by the lubricant manufacturer!
Carry out the following steps:
1.
Grease the threads of the valve disk and those of all screws.
!
Do not grease the thread of the adapter.
!
Do not grease the thread of the piston rod.
2.
Apply a very light film of grease to all seals – including the O-rings at the top and
bottom of the piston rod for the actuator.
!
Do not grease the V-rings.
3.
Lubricate the balancer.
Operating Instructions · VARIVENT
®
Mixproof Valve M-C/2.0
Edition 2018-10-04
