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22. Push in the gate assembly into valve
body
23. Clean the valve bonnet
24. Clean the bonnet seal
25. Lubricate the seal side with 0.1 ml
vacuum grease
If necessary use a new bonnet
seal (for new bonnet seal refer
to chapter: «Spare parts»).
If new bonnet seal is used, no
cleaning and lubrication is
needed.
26. Reassemble the bonnet and bonnet
seal with valve
27. Fasten the bonnet screws with 18 Nm
56/73
MAINTENANCE
Description
§
Edition 2013-08-22
Series 642
Required tool
Clean room wiper a
little soaked with
isopropyl alcohol
Clean room wiper
Vacuum grease
1 × Open end torque
wrench 13 mm
1 × Open end wrench
13 mm
603685EA
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