Samson TROVIS 3730-3 Mounting And Operating Instructions page 54

Installation
the screw and toothed lock washer (11).
Align the marking on the NAMUR valve
connection (on the side marked '1') to
50 % travel.
For attachment to valves with rod-type
yokes using the formed plate (15), which
is placed around the yoke: screw the four
studs into the NAMUR connection block
(10). Place the NAMUR connection block
on the rod and position the formed plate
(15) on the opposite side. Use the nuts
and toothed lock washers to fasten the
formed plate onto the studs. Align the
marking on the NAMUR valve connec-
tion (on the side marked '1') to 50 %
travel.
3. Place the adapter bracket (6) on the po-
sitioner and mount using the screws
(6.1). Make sure that the seals are cor-
rectly seated. For positioners with air
purging, remove the stopper (5) before
mounting the positioner. For positioners
without air purging, replace the screw
plug (4) with a vent plug.
4. Select required lever size (1) M, L or XL
and pin position according to the actua-
tor size and valve travel listed in the trav-
el table on page 5-4.
Should a pin position other than position 35
with the standard M lever be required or an
L or XL lever size be required, proceed as
follows:
− Fasten the follower pin (2) in the as-
signed lever hole (pin position as speci-
fied in the travel table). Only use the lon-
ger follower pin (2) included in the
mounting kit.
5-18
− Place the lever (1) on the shaft of the po-
sitioner and fasten it tight using the disk
spring (1.2) and nut (1.1).
− Move lever once all the way as far as it
will go in both directions.
5. Insert the molded seal (6.2) in the groove
of the adapter bracket.
6. Insert the molded seal (17.1) into the
turnboard (17) and mount the turnboard
to the adapter block (13) using the
screws (17.2).
7. Mount the blank plate (18) to the turn-
board using the screws (18.1). Make
sure that the seals are correctly seated.
Note
A solenoid valve can also be mounted in
place of the blank plate (18). The orientation
of the turnboard (17) determines the mount-
ing position of the solenoid valve. Alterna-
tively, a restrictor plate can be mounted
(u AB 11).
8. Fasten the adapter block (13) to the
NAMUR connection block using the
screws (13.1).
9. Insert the vent plug into the Exh. connec-
tion.
10. Place the positioner on the adapter block
(13) in such a manner that the follower
pin (2) rests on the top of the follower
plate (3, 3.1). Adjust the lever (1) corre-
spondingly.
Fasten the positioner to the adapter block
(13) using the two fastening screws (6.3).
EB 8484-3 EN