Samson 3374 - Replacing the Electric Actuator

EB 3018 EN 9-9
Servicing
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 specied
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 specied tightening torques
(see 'Tightening torques' in Annex).
4. Place the diaphragm actuator on the
valve and fasten tight the coupling nut
(11). Observe the specied 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 specied tightening
torques (see 'Tightening torques' in An-
nex).
6. Put the regulator back into operation (see
the 'Start-up' section).
9.3.4 Replacing the electric
actuator
Observe the relevant safety regulations on
mounting or removing the electric actuator.
Before removing the electric actuator from
the valve, disconnect the power supply and
protect it against inadvertent reconnection.
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).
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
WARNING
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WARNING
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WARNING
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WARNING
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Note
Note