Samson 3731-5, Монтаж и эксплуатация

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34 EB 8387-5 EN
Mounting and start-up
1424) into the signal pressure input be-
fore screwing the filter back into the in-
put.
8. Place the connection block (12) with the
associated seals against the positioner
and the actuator yoke and fasten using
the screw (12.1). For actuators with fail-
safe action "actuator stem retracts", ad-
ditionally remove the stopper (12.2) and
mount the external signal pressure pipe.
9. Mount cover (11) on the other side.
Make sure that the vent plug (11.1) faces
the back when the control valve is in-
stalled to allow any condensed water
that collects to drain off.
5.5 Attachment according to
IEC 60534-6 (NAMUR)
Î
Required mounting parts and accesso-
ries: Table 3 on page 18.
The positioner is attached to the control valve
using a NAMUR bracket (10).
1. 175 cm² actuators: unscrew the filter
from the signal pressure input and first
screw the screw restriction (accessories
order no. 1400-6964/item no. 0390-
1424) into the signal pressure input be-
fore screwing the filter back into the in-
put.
2. 120 to 750 cm² actuators : screw the two
bolts (14) to the bracket (9.1) of the stem
connector (9), place the follower plate
(3) on top and use the screws (14.1) for
fastening.
2800 cm² and 1400 cm² actuators
(120 mm travel):
– For a travel of 60 mm or smaller,
screw the longer follower plate (3.1)
directly to the stem connector (9).
– For a travel larger than 60 mm,
mount the bracket (16) first and then
the follower plate (3) to the bracket
together with the bolts (14) and
screws (14.1).
3. Mount NAMUR bracket (10) to the con-
trol valve as follows:
–
For attachment to the NAMUR rib,
use an M8 screw (11), washer and
toothed lock washer directly in the
yoke hole.
– For attachment to valves with rod-
type yokes, use the two U-bolts (15)
around the yoke. Align the NAMUR
bracket (10) so that the slot of the fol-
lower plate (3/3.1) is centrally
aligned with the NAMUR bracket at
mid valve travel.
4. Mount connecting plate (6) for required
G ¼ connecting thread or pressure
gauge bracket (7) with pressure gauges
on the positioner, making sure the two
seals (6.1) are seated properly.
5. For actuators with less than 240 cm² dia-
phragm area, we recommend screwing a
screw restriction (accessories order no.
1400-6964/item no. 0390-1424) into
the signal pressure output.
6. 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 20.
10
11
1
1
14.1
3
3.1
16
15
14
1
1.2
1.1
2
9.1
9
6
7
8
6.1
1 Lever
1.1 Nut
1.2 Disk spring
2 Follower pin
3 Follower plate
3.1 Follower plate
6 Connecting plate (only
for G ¼)
6.1 Seals
7 Pressure gauge bracket
8 Pressure gauge
mounting kit
9 Stem connector
9.1 Bracket
10 NAMUR bracket
11 Screw
14 Bolt
14.1 Screws
15 U-bolt
16 Bracket
Attachment to
NAMUR rib
Attachment to rod-type
yoke: rods with 20 to
35 mm diameter
XL and L lever
Additional bracket for
2800 cm² actuators
with travel ≥60 mm
For actuators smaller than
240 cm²: insert screw restriction
at output (38)
Fig. 7: Attachment according to IEC 60534-6 (NAMUR)