Replacing The Electric Actuator - Samson 42-36 E Mounting And Operating Instructions

Mounting the operating diaphragm
1. Place a new operating diaphragm (12)
onto the diaphragm plate (16) (ensuring
the pressurized side is facing in the cor-
rect direction) and tighten the diaphragm
plate nut (17). Observe the specified
tightening torques (see 'Tightening
torques' in Annex).
2. Place on the actuator case.
3. Insert nuts and bolts (15) and tighten
gradually in a crisscross pattern. Ob-
serve the specified tightening torques
(see 'Tightening torques' in Annex).
4. 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).
5. 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).
6. Put the regulator back into operation (see
the 'Start-up' section).
EB 3018 EN
9.3.4 Replacing the electric
actuator
WARNING WARNING
! !
Observe the relevant safety regulations on
mounting or removing the electric actuator.
WARNING WARNING
! !
Before removing the electric actuator from
the valve, disconnect the power supply and
protect it against inadvertent reconnection.
Note
Refer to the mounting and operating instruc-
tions of the electric actuator for more details
(see documents listed under 'Referenced doc-
umentation' in the 'Safety instructions and
measures' section).
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).
Î See Fig. 9-3
Servicing
9-9