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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
Additionally required maintenance for applications in ATEX
environment
Replacement of spring for potential equalization if damaged.
DKR2 Valve actuated version
Valve maintenance for
actuator with spring
Note
Functional test,
visual inspection of actuator
movement (turning angle) and
control of abnormal running
noise of spring
1 x per year
Change interval of actuator
(turning actuator)
In case of damage,
incomplete actuator movement
(turning angle), considerable
running noise of spring as well as
after 250,000 cycles* as
preventive measure, however,
after 10 years at the latest.
*complies with about 8 years in 1-shift-operation and 10-15 cycles per hour.