GEM 653 Installation, Operating And Maintenance Instructions page 39

Setting the stroke limiter
Move the valve to the OPEN position by
G
turning handwheel 7 (upside down) until
the required flow rate is reached.
Pull of handwheel 7 from the threaded
G
spindle 15.
Screw stroke limiting sleeve 5 on until it
G
stops.
Important:
The threaded spindle 15 must
not turn during this process!
If necessary, hold with a SW8
open-end wrench!
Fix the stroke limiting sleeve 5 with
G
locking screw 9 (SW2 Allen key).
Push handwheel 7 into its original
G
position on the double flats of the
threaded spindle 15 and secure it with
locking screw 8.
Diaphragm sizes 10 - 50
Preparation for setting
Remove protective cap a.
G
Move the bonnet out of the end positions
G
to enable the handwheel to be turned in
both directions.
Releasing the stroke limiter
Turn stroke limiter b anticlockwise
G
upwards until the male thread is visible.
Releasing the seal adjuster
Turn seal adjuster c clockwise
G
downwards until it stops.
Setting the seal adjuster
Move the bonnet to the desired CLOSED
G
position by turning the handwheel.
Turn seal adjuster c anticlockwise
G
upwards until it stops.
Setting the stroke limiter
Move the bonnet to the desired OPEN
G
position by turning the handwheel.
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