Samson 3374-11 - 6.2.2 Adjusting the limit contacts

32 EB 8331-4 EN
Additional functions
11. Replace cover. Briey turn the fastening
screws counterclockwise with a screw-
driver to center them. Then fasten down
the cover by tightening the screws.
6.1.2 Adjusting the limit con-
tacts
To undo the screws on the housing cover, use
a Pozidriv PZ2 screwdriver to get enough
hold on the screw heads.
1. Undo screws on housing cover and take
the cover off the actuator.
2. Switch on power supply.
3. Move the valve, using manual override
or the "manual level" operating mode, to
the point at which the contact should re-
act.
4. Use a 4mm hex wrench to turn the spin-
dle of the adjustment gears (18) for the
upper limit contact or for the lower limit
contact until the associated contact cam
(19) of the contact cam unit (21) triggers
the switch contact of the upper or lower
microswitch on the terminal board (17).
5. Replace cover. Briey turn the fastening
screws counterclockwise with a screw-
driver to center them. Then fasten down
the cover by tightening the screws.
6.2 Electronic limit contacts
6.2.1 Installing the limit
contacts
Required accessories
To install the electronic limit contacts, the ret-
rot kit (order no. 1402-0591) is required.
Installinglimitcontacts:
Risk of electric shock.
Before installing electrical accessories, switch
off the power supply and disconnect the sig-
nal input.
To undo the screws on the housing cover, use
a Pozidriv PZ2 screwdriver to get enough
hold on the screw heads.
1. Undo screws on housing cover and take
the cover off the actuator.
2. Connect connecting cable to the plug-in
location intended for it on the board.
3. Position the terminal board (17, see
Fig.12) at the base of the support at a
45° angle (approx.) with the relay point-
ing towards the edge of the intermediate
board. Swivel the upper end of the termi-
nal board until the board is properly en-
gaged.
4. Replace cover. Briey turn the fastening
screws counterclockwise with a screw-
Note
DANGER
!
Note