SPX FLOW APV DELTA SD4 Series Instruction Manual page 23

APV
APV_SD4_ATEX_UK-0_122018.indd
Double seal valve
DELTA SD4-ATEX
Instruction Manual: UK - rev. 0
10. Maintenance
Additionally required maintenance for applications in ATEX
environment
SD4 Valve
Valve maintenance for
actuator with spring
Functional test,
visual inspection of valve
stroke and
control of abnormal running
noise of spring
Change interval of actuator
*complies with about 8 years in 1-shift-operation and 10-15 cycles per hour.
Note
1 x per year
In case of damage,
incomplete actuator movement,
considerable running noise of
spring as well as
after 250,000 cycles* as
preventive measure, however,
after 10 years at the latest
UK
18