Honeywell Fema DWAM Series Assembly And Operating Instructions Manual page 19

3. Maximum pressure limiters with mechanical
interlock of the switching state (SDBAM...)
Instead of the microswitch with automatic reset, a "bistable" microswitch
is installed in the limiters.
When the pressure reaches the value set on the scale, the microswitch
switches over and remains in this position. The catch can be relased by
pressing in the unlocking button (marked on the scale side of the switching
device by a red dot). The limiter can not be unlocked until the pressure has
decreased by a certain amount.
3.1 Technical data as for 1.1
3.2 Electrical connection
Switching over and interlocking on rising temperature.
Connection of control circuit to terminal 1 and 3.
3.3 Unlocking of maximum pressure limiters SDBAM
By pressing in the button red on the scale side of the switching device (e. g. with screwdriver or
ball-point pen).
Unlocking does not become effective until the pressure on the probe has dropped below the set.
For SDBAM 1
For SDBAM 2.5
For SDBAM 6
approx. 0.12 bar
approx. 0.15 bar
approx. 0.4 bar
For SDBAM 625
For SDBAM 16
For SDBAM 32
SDBAM...
approx. 0.6 bar
approx. 0.8 bar
approx. 3.0 bar
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