Janus FM-200 Sv Series - Discharge Pressure Switch

Page: 23
FM-200® OPERATION, DESIGN, & SERVICE MANUAL
Revision F
Document # DOC102
Issued: February 1, 2009
Revised: 11-Nov-2011
40YE
Section 2 System Description and Components
2.4.2 Discharge Pressure Switch
P/N 18773 (See Figure 2.4.2)
A discharge pressure switch is used in the system to send a signal conrming agent discharge to the control
panel or to initiate the shut down of equipment that may deplete agent concentration. It is a single pole,
double throw (SPDT) switch with contacts rated 10 Amps resistive at 30 VDC. e discharge pressure
switch shall be required where mechanical system actuation is possible, though its placement varies according
to the individual system arrangement.
Figure 2.4.2 Discharge Pressure Switch
1/2” (15 mm)
Conduit Entry
1/4” (8 mm)
FNPT Pipe
Connection
3.375 in
85.7 mm
2.875 in
73.0 mm
3/16”
(4.76 mm)
Mounting Hole
2.88 in
73.2 mm
4.63 in
117.6 mm
2.90 in
73.7 mm
1.56 in
39.6 mm