Samson 373 Series User Manual

60 EB 8384-2 EN
Mounting and start-up
5.6.2 Version for double-
acting actuator
Areversingampliermustbeadditionally
mounted for applications with double-acting
(DAP) actuators or applications with sin-
gle-acting (SAP) actuators that include par-
tial stroke testing.
In this case, a special adapter bracket (4) is
required for mounting.
Î RefertoFig.16.
1. Fasten the adapter block (1) to the actua-
tor'sNAMURinterfaceusingthefour
fastening screws (2).
Î Make sure that the seals are correctly
seated.
2. Mount the follower wheel (3) onto the ac-
tuator shaft. Use the matching adapter
(seeTable6onpage26).
3. Place the adapter bracket (4) onto the
adapter block (1) and fasten it using the
fastening screws (5).
Î Make sure that the seals are correctly
seated.
4. Insert and fasten the follower pin into the
90° position on the positioner's lever (see
Fig.13onpage58).
5. Align the positioner on the adapter
bracket (1) in such a way that the follow-
er pin engages into the actuator's follow-
er wheel (3).
6. Fasten the positioner onto the adapter
bracket (4) using the fastening screws
(6).
7. MounttheType3710ReversingAmpli-
er (7) together with the two guide bush-
ings (8) and terminal plate (9) onto the
adapter bracket using the associated fas-
tening screws (10).
Î Make sure that the seals are correctly
seated.
8. Removetheventplugattheadapter
blockandsealtheopeningwiththeG¼
screw plug.
9. Mount the turnboard marked 'Doppel'
for double-acting actuators or the turn-
board marked 'PST' for single-acting ac-
tuators with partial stroke testing. See
Fig.15.
Î Make sure that the seals are correctly
seated.
Fig.15: Mounting the turnboard

Samson 373 Series Specifications

General

Brand	Samson
Model	373 Series
Category	Valve Positioners
Language	English