20
EB 8394 EN
Mounting the positioner
4.4
Attachment according to
IEC 60534-6
The positioner is attached to the control valve
using a NAMUR bracket (10).
Î
Required mounting parts and accesso
-
ries: Table 5 on page 31.
Î
Observe travel tables on page 13.
1.
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.
2.
Fasten the NAMUR bracket (10) to the
control valve.
−
For valve with NAMUR rib: Fasten the
NAMUR bracket (10) using the M8
screw (11) and toothed lock washer di
-
rectly to the yoke hole.
−
For valves with rod-type yoke: Place the
two U-bolts (16) around the stem. Posi
-
tion the NAMUR bracket (10) and fasten
it using the nuts, washers and toothed
lock washers.
3.
Align the NAMUR bracket (10) so that its
mounting holes are approximately in line
to the middle of the travel scale indicator
(15) (the slot of the follower plate must
be centrally aligned with the NAMUR
bracket at mid valve travel).
4.
Mount connecting plate (6) or pressure
gauge bracket (7) with pressure gauges
(8) on the positioner, making sure the
two seals (6.1) are seated properly.
5.
Place positioner on the NAMUR bracket
in such a manner that the pin (2) rests in
the slot of the follower plate (3). Adjust
the lever (1) correspondingly.
Fasten the positioner to the NAMUR
bracket using its two mounting screws.
Summary of Contents for 3725 series
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