Samson 4747, Mounting And Operating Instructions

Page: 22 / 64

22 EB 4747 EN
Mounting
5.1 Mounting orientation
Any mounting position may be used. The fol-
lowing applies concerning the installation:
Î
Install the limit switch in such a way that
the M20x1.5 cable gland faces down -
ward (in cases where this is not possible,
mount it in the horizontal position).
Î
On mounting, make sure that 300 mm or
more clearance is kept above the enclo-
sure cover.
5.2 Lever and pin position
Risk of malfunction due to incorrect mount-
ing parts/accessories or incorrect assign-
ment of lever and pin position.
Only use mounting parts/accessories listed
in these mounting and operating instructions
to mount the limit switch. Observe the type
of attachment.
Observe the assignment between lever and
pin position.
The limit switch is adapted to the actuator
and to the rated travel by the lever on the
bottom of the limit switch and the pin insert-
ed into the lever. The travel tables (sec-
tion 3.4 on page 16) show the maximum
adjustment range at the limit switch.
The travel that can be implemented at the
valve is additionally restricted by the re-
quired compression of the actuator springs.
If a pin position other than position
35 with
the standard M lever is required or a differ-
ent lever size is required, proceed as follows
(see Fig. 2):
1. Place the lever (1) in mid-position and
hold it in place. Unthread the nut (1.1)
and remove the lever together with the
disk spring (1.2) from the shaft.
Î
Do not remove the tab washer (1.3).
2. Remove the follower pin (2) from its pin
position and move it to the hole for the
recommended pin position (according to
travel tables on page 16) and screw
tight. Only use the longer follower pin in-
cluded in the mounting kit.
3. Place the lever (1) on the shaft of the lim -
it switch and fasten it tight using the disk
spring (1.2) and nut (1.1).
2
1.2
1.1
1
1.3
Fig. 2: Changing the pin position or ex -
changing the lever
NOTICE
!