3.
Pull out the piston rod (16), lock washers (27), compression spring (19),
spring cage cover (18), O-rings (22, 23) and piston (17).
4.
Tension the compression spring (19) using the assembly tool, material no.
222-601.51.
5.
Pull off the lock washer (27).
6.
Use the assembly tool (A), material no. 222-601.51, to relieve the tension on
the compression spring (19) and remove the assembly tool.
7.
Pull the piston (17) off the piston rod (16) and take all the remaining parts out
of the handwheel.
–
Handwheel has been removed.
9.6
Maintenance
9.6.1
Cleaning the valve
Notice
Damage to the valve disk
All the surfaces of the valve disk are functional surfaces.
► Carefully remove the valve disk.
Carry out the following steps:
1.
Disassemble the valve, see Section 9.5, Page 30.
2.
Carefully clean the individual parts.
®
Done.
Hint!
Observe the safety data sheets supplied by the detergent
manufacturers. Only use detergents which are non-abrasive and not
aggressive towards stainless steel.
9.6.2
Replacing seals
Replace defective seals to ensure the tightness of the valve. Always use genuine
spare parts.
9.6.3
Lubricating seals and threads
Notice
Damage to seals and threads
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.
Maintenance
Maintenance
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