Fema DCM Series Assembly And Operating Instructions Manual page 34

1.2 Electrical wiring
Connection layout
Wiring
Wiring is on the angled plug. The cable outlet
can be in any of 4 positions, which are at 90° in
relation to each other.
1. Remove screw
2. Insert the screwdriver in the slot
and press downwards.
On devices with terminal connection housing
(300 and 500) the terminal board is available
after removing the terminal box lid.
Caution: Switch off voltage.
With rising pressure:
3–1 opens, 3–2 closes
With falling pressure:
3–2 opens, 3–1closes
1.3 Pressure connection
1.31 Pressure switch
Installation: Directly on the pipeline (pressure
gauge connection G|) or with 2 screws
(4 mm) on a level surface. Tighten only on the
hexagonal of the pressure organ, never use
the housing or plug as a lever arm.
External thread G | HH
(Pressure gauge connection)
When using flat seals, turn in
the centering screw
(depth A approx. 0,3 – 0,5 mm).
Internal thread G [ HH
In gas applications internal
thread only up to 4 bar
permissible. Use flat gasket
ring for pressure > 4 bar.
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