Fig.21
6.
Insert the V-ring evenly.
7.
Replace all the other seals identified in the spare parts lists.
®
Done
Hint!
Used seals must not be used again, since the proper function of the
seal can then no longer be ensured.
10.6.3 Lubricating seals and threads
Caution!
Damage to seals and threads
Stainless steel threads tend to seize and cold weld and must be greased.
Damage to seals and threads can result in malfunction.
► Ensure that an adequate film of lubricant is applied. No grease residues
must be visible once the valve has been assembled completely.
► For product contact seals only use suitable greases and oils.
► Observe the safety data sheets issued by the lubricant manufacturer.
Carry out the following steps:
1.
Apply a light film of lubricant to all threads.
2.
Grease all seals – including the O-rings at the top and bottom of the actuator
piston stem – very thinly.
®
! Do not grease the V-ring.
®
Done
Maintenance
Maintenance
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Summary of Contents for VARIVENT D Series
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