System Sensor EPS10EXP - Manual (Page 2)

D770-25-00 2 I56-1427-001R
Locate it where vibration, shock, and mechanical loading
are minimal. Refer to piping diagram (Figure 2 on page 2).
a. Mount the device directly to the line via the 1/2" NPT
pressure connection. The use of teflon pipe sealant
tape is recommended. Be sure the fitting is tight
enough to prevent leaks.
b. Apply tightening torque to the brass hex portion of
device.
High voltage. Electrocution hazard. Do not handle live AC
wiring or work on a device to which AC power is applied.
Doing so may result in severe injury or death.
3. Wire the device in accordance with the National
Electrical Code. Two 1/2” NPT conduit entry holes have
been provided in the mounting base to accept explosion
proof conduit fittings. If necessary, remove conduit entry
plug with 3/8” square wrench.
4. Connect wiring to terminals (see Figure 3 and Table 1).
Adjustments To Factory Settings
CAUTION
WET
SYSTEM
ALARM
CHECK
VALVE
OS & Y
VALVE
WATER
BY-PASS
VALVE
LOCAL ALARM
SHUT OFF
VALVE
RETARD
WATER
MOTOR
GONG
EPS10EXP
WET
SYSTEM
ALARM
CHECK
VALVE
OS & Y
VALVE
WATER
BY-PASS
VALVE
LOCAL ALARM
SHUT OFF
VALVE
RETARD
WATER
MOTOR
GONG
EPS10EXP
DRY
SYSTEM
ALARM
CHECK
VALVE
OS & Y
VALVE
WATER
BY-PASS
VALVE
LOCAL ALARM
SHUT OFF
VALVE
WATER
MOTOR
GONG CHECK
VALVE
EPS10EXP
WET SYSTEM WET SYSTEM DRY SYSTEM
WIRE TO ALARM
INDICATING CIRCUIT
OF FIRE ALARM
CONTROL PANEL WIRE TO ALARM
INDICATING CIRCUIT
OF FIRE ALARM
CONTROL PANEL WIRE TO ALARM
INDICATING CIRCUIT
OF FIRE ALARM
CONTROL PANEL
TO
SPRINKLER
SYSTEM TO
SPRINKLER
SYSTEM TO
SPRINKLER
SYSTEM
Figure 2. Typical piping diagram for EPS10EXP
A78-2398-00
Figure 3. Switch terminals:
Table 1. Electrical connections (referenced at facto-
ry settings):
COMMON
TERMINALS
TERMINAL
“A”
SWITCH #2
TERMINAL
“B”
GROUND
SCREW
(GREEN)
SWITCH #1
A78-2346-02
BREAK WIRE AS SHOWN FOR
SUPERVISION OF CONNECTION.
DO NOT ALLOW STRIPPED WIRE
LEADS TO EXTEND BEYOND
SWITCH HOUSING. DO NOT
LOOP WIRES.
SWITCHES AT 4-8 P.S.I. (HIGH TRIP PT.)
SWITCHES AT 0 P.S.I.
SW1 SW2
MODEL EPS10EXP
SW1 SW2
B
COM
A
B
COM
A
A
COM
B
A
COM
B
BOTH SWITCHES ACTIVATE SIMULTANEOUSLY