APV DELTA SW4, Operating Manual

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DELTA SW4 - UK-3.qxp 23.04.2009
UK
Single Seat and Change-over Valve
DELTA SW4
Operating manual UK - rev. 3 14
8. Maintenance
- The maintenance intervals depend on the corresponding
application and are to be determined by the operator himself
carrying out
temporary checks .
- The valve must not be cleaned with products containing abrasive
or polishing material.
Especially the valve shaft must not, under any circumstances,
be cleaned with such agents.
Damage of the valve shaft can lead to leakages.
- Required tools :
- 1x wrench SW13
- 1x wrench SW17
- 1x wrench SW19
- 1x wrench SW30
- assembly tool for seat seal
(see chapter 12.)
- Exchange of seals is done according to service instructions.
A customer stock keeping of spare seals is recommended.
For the valve service we supply complete seal kits including
seal grease (see spare parts lists).
- Assembly of the valve and change of the valve design NC or NO
according to service instructions.
- Slightly grease all seals before their installation !!!!!
Recommendation:
APV food-grade-grease for EPDM, HNBR, FPM and NBR
(0,75 kg/tin - ref.-No. 000 70-01-019/93)
(60 g/tube - ref.-No. 000 70-01-018/93)
or
APV food-grade-grease for VMQ
(0,6 kg/tin - ref.-No. 000 70-01-017/93)
(60 g/tube - ref.-No. 000 70-01-016/93)
!!! Do not use grease containing mineral oil for EPDM seals.
!!! Do not use Silicone-based grease for VMQ seals.
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