15
APV_RGMS4_ATEX_UK-1_122018.indd
UK
Modulating valve with supported producut diaphragm
APV DELTA RGMS4 - MFS + MFH ATEX
Instruction manual UK-1
APV
11. Maintenance
- The maintenance intervals depend on the corresponding application
and are to be determined by the operator himself carrying out
temporary checks.
- Before start of maintenance and assembly the operator must make
sure that an explosive atmohsphere does not exist (detection/
measurement of potential concentration of hazardous substances).
Alternatively, use spark-resistant tools!
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.
- The customer is recommended to hold spare seals and diaphragms
on stock. For valve maintenance SPX FLOW supplies complete
seal kits (pl. see spare parts lists)
Required tools:
1x wrench SW13
1x wrench SW17
1x wrench SW19
1x wrench SW24
1x wrench SW30 (1.5")
1x screw driver small- and medium-sized
- If damaged seals are dismantled, generally all seals and the
diaphragm should be replaced.
- Assembly and disassembly as well as replacement of seals /
diaphragm, see Service Instructions.
Provide all seals with a thin layer of grease before their
installation.
Recommendation:
APV assembly grease for EPDM, HNBR and FPM
(0.75 kg /tin - ref.-No. 000 70-01-019/93; H147382)
(60 g /tube - ref.-No. 000 70-01-018/93; H147381)
or
APV assembly grease for VMQ
(0.6 kg /tin - ref.-No. 000 70-01-017/93; H147380)
(60 g /tube - ref.-No. 000 70-01-016/93; H147379)
! Do not use grease on mineral oil basis for EPDM seals.
! Do not use Silicone-based grease for VMQ seals.
! No matter what type of application, use only those greases
being suited for the respective seal material.
Recommendation for screw retention
Type: Loctite 243 semi-solid
(50 ml - ref.-No. 000-70-01-111/93; H206336)