Samson 4740, Монтаж и эксплуатация

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12 EB 8357 EN
Mounting and start-up
4.1.2 Mounting on the control
valve
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See Fig. 3
WARNING!
Risk of personal injury due to pre-
loaded springs in the adapter.
Keep hold of the adapter when
screwing or unscrewing it and secure
it against sudden unintentional
release.
Fail-open (FE/NO) version
1. Use an open-end wrench (width across
flats 32) or a pair of pliers to remove the
transparent cover (5.1) from the actuator
(5).
2. Use a socket wrench (width across
flats 11) to unscrew the cap (5.2) from
the actuator stem.
3. Thread the ready-assembled adapter
(see section 4.1.1) from the top into the
actuator (5).
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Make sure that the adapter does not
spring back as a result of the spring
compression.
4. Carefully place the limit switch (1) on the
ready-assembled adapter.
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For the version with microswitches, make
sure that the switches (1.5) in the limit
switch do not get damaged.
5. Lock the limit switch in the required posi-
tion using the retaining screw (1.4).
Fail-close (FA/NC)
1. Extend the actuator stem (apply air to the
actuator).
2. Use an open-end wrench (width across
flats 32) or a pair of pliers to remove the
transparent cover (5.1) from the actuator
(5).
3. Use a socket wrench (width across
flats 11) to unscrew the cap (5.2) from
the actuator stem.
4. Retract the actuator stem (vent the actua -
tor).
5. Thread the ready-assembled adapter
(see section 4.1.1) from the top into the
actuator (5).
Î
Make sure that the adapter does not
spring back as a result of the spring
compression.
6. Carefully place the limit switch (1) on the
ready-assembled adapter.
Î
For the version with microswitches, make
sure that the switches (1.5) in the limit
switch do not get damaged.
7. Lock the limit switch in the required posi-
tion using the retaining screw (1.4).