GF DIASTAR Serie Manual Instrucciones página 58

Instruction Manual
 Replace friction lock on the valve body, therefore loose it with a screw driver.
 Push the new one in.
Fig. 24
 Position actuator on the valve body: Realign the bulge of the diaphragm parallel
to compression piece, see fig. 24
 Move the actuator in "open" position, see fig. 20
Fig. 25
 Tighten housing nut handtight, see fig. 25
Diaphragm is now centred.
Fig. 26
 Screw housing nut with strap wrench tight, till
- a uniform all-around gap of 0.5 up to 1 mm between valve body and bonnet is
achieved and
- the half-round position indicator is align with the friction lock, see fig. 26
For valves with a built-in stroke limiter, we recommend to read just the valve.
56
Maintenance