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Typical Electrical Connections
Fig 4
TO FIRE
ALARM
PANEL
WITH NORMAL SYSTEM PRESSURE APPLIED HIGH - TERMINAL 1 WILL CLOSE
ON PRESSURE INCREASE.
WITH NORMAL SYSTEM PRESSURE APPLIED LOW -TERMINAL 2 CLOSES ON
PRESSURE DROP.
Low Pressure Signal Connection
Fig 5
TO FIRE ALARM PANEL
EOLR
High Pressure Signal Connection
Fig 6
TO FIRE ALARM PANEL
EOLR
Potter Electric Signal Company, LLC
HIGH
AIR
2
1
COM
1
2
COM
LOW
AIR
EOLR
DWG# 928-1
DWG# 928-2
•
St. Louis, MO
One Conduit Wiring
Fig 7
Changing Pressure
Fig 8
Low Pressure Switch
LOW PRESSURE SWITCH
C
C
Terminal
HIGH PRESSURE SWITCH
C: Common
1.
Closed when installed under
C
normal system Pressure.
2.
Open when installed under
C
normal system pressure.
Closes on pressure drop.
Use for low air signal.
Removing Knockouts
Fig 9
•
Phone: 866-956-0988 / Canada 888-882-1833
•
5400931 - REV J
2/20
PS40 Series
Supervisory Pressure Switch
LOW PRESSURE SWITCH
DWG# 928-4
C
High Pressure Switch
HIGH PRESSURE SWITCH
C
1
2
Terminal
1.
Open when installed under
normal system pressure.
Closes
pressure. Use for high air
signal.
1
2
2.
Closed under normal system
DWG# 930-3
pressure.
DWG#928-5
•
C
1
2
C
1
2
DWG# 930-3
on
increase
in
www.pottersignal.com
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