Honeywell Fema DCM-203-574 Series Assembly And Operating Instructions Manual page 64

5. Two-Stage Pressure Switches ...-307, ...-217
5. Two-Stage Pressure
Switches ...-307, ...-217
A switch unit with two microswitches, both
with single-poled changeover, is part of the
basic equipment for each two-stage
pressure switch.
Switch I monitors lower pressure, switch II
monitors higher pressure.
NOTE: The switching differential of the
individual microswitches is the
interval (in bar or mbar) between
the switching points of the two
microswitches.
24
5.1 Model ...-307 and Adjustment
Fig. 13. Connection layout
The switching interval between the two
switches is set according to customer
requirements.
With increasing pressure, first micro-
switch I (terminal connection 1-3) and then
microswitch II (terminal connection 4-6) is
activated.
MU2B-0238GE51 R0616D