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APV_DKR2 ATEX_UK-0_022018.indd
UK
Double Seat Ball Valve DELTA DKR2
ATEX Design
Instruction Manual: UK-0
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!
- Customer stock keeping of spare seals is recommended.
For valve service actions we supply complete seal kits (see spare
parts lists).
- If damaged seals are replaced, generally all seals and bearings
should be changed.
- Installation and adjustment of turning actuator according to Service
Instructions.
- Dismantling and installation of seals according to Service
Instructions.
- All seals must be slightly greased before their installation.
- The inner parts of the actuator are maintenance free.
Attention!
Use food-grade special grease being suited for the
respective seal material, only.
Recommendation:
APV assembly grease for EPDM, FPM, HNBR and NBR
(0,75 kg /can - 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 /can
- ref. No. 000 70-01-017/93; H147380)
(60 g /tube
- ref. No. 000 70-01-016/93; H147379)
!
Do not use grease containing mineral oil for EPDM seals.
!
Do not use Silicone-based grease for VMQ seals.
Less suited grease types can influence the function and
life time.