Samson 4708 Mounting And Operating Instructions page 14

Mounting the supply pressure regulator
Type 4708-55xx for Types 3725, 4763,
and 4765 Positioners
1. Screw the special nuts (5) into the connect-
ing holes of the positioner.
2. Insert the gasket (2) into the recess of the
adapter plate (1).
3. Slide the special hollow screws (6) for
SUPPLY and (7) for OUTPUT into the con-
necting holes of adapter plate (1).
4. Place the supply pressure regulator onto
the positioner and fasten it using the two
special screws.
5. Seal the spare connections with stoppers
(4) to prevent dirt from entering the de-
vice.
Type 4708-64xx for Type 3277 Actuator
Before mounting, check whether the tip of
the gasket (1.2) projecting from the side of
the connection block (1) is positioned to
match the actuator symbol (1.3) for the actu-
ator's fail-safe action "actuator stem ex-
tends" or "actuator stem retracts". If this is
not the case, proceed as follows:
1. Unscrew the three Phillips screws (3.1),
lift off the cover (1.1). Turn the gasket
(1.2) by 180° and re-insert it. Continue
with reassembly.
2. Place the connection block (1) with the
inserted O-ring against the positioner
and actuator yoke and fasten using the
hexagonal socket screw (3).
3. Place the supply pressure regulator with
O-ring on the connection block and fas-
ten it with hexagonal socket screw (2).
14
1
4
Fig. 6: Attachment to Types 4763 and 4735
Positioners
1
3
10
2
1.2
4
1.1
1.3
1
1.3
1.2
Fig. 7: Mounting on Type 3277 Actuator
1
7
5
2
5
6
3.1
1
7
1
5
9
5
6
3.1
EB 8546 EN