Replacing The Actuator; Replacing The Seat And Plug - Samson 42-36 E Mounting And Operating Instructions

9.3.1

Replacing the actuator

Î See Fig. 9-1 and Fig. 9-2
Note
Read the mounting and operating instruc-
tions of actuators with fail-safe action (see
documents listed under 'Referenced docu-
mentation' in the 'Safety instructions and
measures' section).
Removing the actuator
1. Put the regulator out of operation (see
the 'Decommissioning' section).
2. Unscrew the control line (18) at the con-
trol line connection (19).
3. Unscrew the coupling nut (11) of the dia-
phragm actuator from the valve. Remove
the actuator.
Mounting the actuator
1. Place the diaphragm actuator on the
valve and fasten tight the coupling nut
(11). Observe the specified tightening
torques (see 'Tightening torques' in An-
nex).
2. Screw the control line (18) to the control
line connection (19) on the valve and ac-
tuator. Observe the specified tightening
torques (see 'Tightening torques' in An-
nex).
3. Put the regulator back into operation (see
the 'Start-up' section).
EB 3018 EN
9.3.2 Replacing the seat and
plug
To replace seat and plug, contact
SAMSON's After-sales Service.
Further information is available in Annex
('After-sales service').
Servicing
9-7