Serial Numbers - Fema DWR Série Instructions De Montage Et De Service

7.4 Setting of switching point
The switching point can be set within the range
given in the datasheet by using a screwdriver
on the setting spindle. Additionally you should
remove the terminal board casing (with 4 hexa-
gon screw M 4). The affixing screw on the front
end (above the scale) has to be removed and
should be reattached after setting the switching
point.
Turning the setting spindle clockwise gives a
lower switching point, turning anticlockwise
gives a higher switching point.
The scale should be used as a guide, for more
exact settings you should use a manometer.
7.5

Serial numbers

All switch units and their respective terminal
board casings are marked with a serial number.
When installing you should ensure that the
terminal board casings do not get mixed up.
Important notice:
When installing the Ex switch units and setting
them up for operation you should comply
with the recognised rules and guidelines for
installations in Ex-areas.
Ex-cable gland (4) only to be used for
fixed installation.
1 Potential equalisation
2 Protective casing for terminals (removable)
3 Connection terminals
4 Cable inlet M 16 x 1,5
5 Switching point adjustment
6 Locking bolt for setting spindle
7 Protection of the conductive connection
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