6
Fig. 9
Setting the limit switch(es)
Handwheel with grub screw,
washer and hexagon nut
Limit switch (10) “CLOSED”
Limit switch (10) “OPEN”
Plug (15)
-- Fit the grub screw, the hexagon nut, the washer and the handwheel again.
-- Insert the plug (15).
-- Run the valve to both limit positions, respectively adjusting the limit switch and tightening the screws.
-- The limit switches (10) have snap-action contacts (audible ”click”).
-- After completing the installation and checking the limit switch set (limit switch setpoints adjusted), check the hexagon head bolts
and the remaining studs, and tighten them in accordance with the table entitled ”Bolt tightening torques” (cf. operating manual
0570.8).
-- Check the valve with limit switches for proper functioning.
-- Check the limit switches (10) for correct ”CLOSED” and ”OPEN” function and switching points, as applicable.
This concludes the assembly procedure for the limit switch variant set.
If, for example, the ”OPEN” position does not function properly, adjust the clearance of the switching nut (3) (Fig. 5). Then repeat
all steps described in Fig. 4 to Fig. 8.
Electrical connection
Unscrew the screw to enable
connection
Wire up connections 13, 14 and 21, 22 (behind cover) as follows:
-- NC contact: 21 and 22
-- NO contact: 13 and 14
The scope of supply includes no M16 cable gland (strain relief).
