Samson TROVIS SAFE 3731-3, Монтаж и эксплуатация

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9. Mount cover (11) on the other side.
Make sure that the vent plug (11.1)
points to the back when the control
valve is installed to allow any con-
densed water that collects to drain off.
4.2 Attachment according to
IEC 60534-6 (NAMUR)
Refer to Table 3 on page 32 for the required
mounting parts and accessories.
The positioner is attached to the control
valve using a NAMUR bracket (10).
1. Actuator with 175 cm²:
Unscrew the filter from the signal pres-
sure input and first screw the screw re-
striction (accessories order no.
1400-6964/item no. 0390-1424) into
the input and then the filter.
2. Actuator sizes 120 to 750 cm²:
Screw the two bolts (14) to the bracket
(9.1) of the stem connector (9), place
the follower plate (3) on top and tighten
it using the screws (14.1).
Actuator size 2800 cm² and 1400 cm²
(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 exceeding 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 bore.
– For attachment to valves with
rod-type yokes, use two U-bolts (15)
around the yoke. Align the NAMUR
bracket (10) in such a way that the
slot of the follower plate (3/3.1) is
centrally aligned with the NAMUR
bracket at mid valve travel.
4. If applicable, mount pressure gauge
bracket (7) with pressure gauges or, in
case G ¼ threaded connections are re-
quired, the connecting plate (6), mak-
ing sure both seal rings (6.1) are
seated properly.
5. Screw a screw restriction (accessories
order no. 1400-6964/item no.
0390-1424) into the signal pressure
output for actuators with diaphragm ar-
eas smaller than 240 cm².
6. Select required lever (1) size
M
,
L
or
XL
and pin position according to the actu-
ator size and valve travels listed in the
table on page 17.
Lever M with pin position 25 or 50:
6.1 Remove follower pin (2) from pin
position
35
and screw it into the
required hole.
Lever L or XL:
6.1 Unscrew the standard lever
M
from
the shaft of the positioner.
EB 8387-3S EN
23
Attachment to the control valve – Mounting parts and accessories