Locate it where vibration, shock, and mechanical loading
are minimal. Refer to piping diagram (Fig. 2 on page 2).
a. Mount the device directly to the line via the 1/2
″
NPT pres-
sure connection. The use of teflon pipe sealant tape is rec-
ommended. Be sure the fitting is tight enough to prevent
leaks.
b. Apply tightening torque to the brass hex portion of device.
CAUTION
High voltage. Electrocution hazard. Do not handle live AC wir-
ing 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 fit-
tings. If necessary, remove conduit entry plug with 3/8
″
square wrench.
4. Connect wiring to terminals (see Figure 3 and Table 1).
WET
SYSTEM
ALARM
CHECK
VALVE
OS & Y
VALVE
WATER
BY-PASS
VALVE
LOCAL ALARM
SHUT OFF
VALVE
RETARD
WATER
MOTOR
GONG
EPSA10
WET
SYSTEM
ALARM
CHECK
VALVE
OS & Y
VALVE
WATER
BY-PASS
VALVE
LOCAL ALARM
SHUT OFF
VALVE
RETARD
WATER
MOTOR
GONG
EPSA10
DRY
SYSTEM
ALARM
CHECK
VALVE
OS & Y
VALVE
WATER
BY-PASS
VALVE
LOCAL ALARM
SHUT OFF
VALVE
WATER
MOTOR
GONG
CHECK
VALVE
EPSA10
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 CIRCUI
OF FIRE ALARM
CONTROL PANEL
TO
SPRINKLER
SYSTEM
TO
SPRINKLER
SYSTEM
TO
SPRINKLER
SYSTEM
Figure 2. Typical piping diagram for EPS10EXP
W0146-00
Figure 3. Switch terminals:
Table 1. Electrical connections (referenced at factory
settings):
W0177-00
BREAK WIRE AS SHOWN FOR
SUPERVISION OF CONNECTIO N.
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
SWITCH # 1
COMMON
TERMINALS
TERMINAL
"A"
TERMINAL
"B"
SWITCH #2
GROUND
SCREW
(GREEN)
W0175-00
2
I56-1427-C
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