D770-08-00
1
I56-0551-007R
EPS10 Series Alarm
Pressure Switches
INSTALLATION AND MAINTENANCE INSTRUCTIONS
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
www.systemsensor.com
Important
Please Read Carefully and Save
This instruction manual contains important information
about the installation and operation of alarm pressure
switches. Purchasers who install switches for use by others
must leave this manual or a copy of it with the user.
Read all instructions carefully before installation, follow-
ing only those instructions that apply to the model you are
installing.
Before installing any alarm device, be thoroughly familiar
with:
NFPA 72:
Installation, Maintenance, and Use of Protective
Signaling Systems
NFPA 13:
Installation of Sprinkler Systems
NFPA 13A:
Inspection, Testing, and Maintenance of
Sprinkler Systems
Other applicable NFPA standards, local codes, and the
requirements of the authority having jurisdiction.
Failure to follow these directions may result in failure of the
device to report an alarm condition. System Sensor is not
responsible for devices that have been improperly installed,
tested, or maintained.
CAUTION
Do not use in potentially explosive atmospheres.
Do not leave unused wires exposed.
Specifications
Contact Ratings:
10 A,
1
/
2
HP @ 125/250 VAC
2.5A @ 6/12/24 VDC
Overall Dimensions:
See Figure 1
Operating Temperature Range:
–40° to +160°F
Maximum Service Pressure:
250 PSI
Maximum Adjustment Range:
4 – 20 PSI
Enclosure Rating:
UL 4x — Indoor or Outdoor Use
NEMA 4 — Indoor or Outdoor Use
IP54
Approximate Differential:
3 PSI throughout range
Operation
As pressure changes, a diaphragm actuates 1 or 2 snap
action switches. The pressure switch actuation is deter-
mined by adjustment settings.
Installation
1. Remove Cover
Cover is held on by two tamper resistant screws.
(Removal key is enclosed with pressure switch.)
2. Mounting the Switch
The device is designed to be mounted in the upright or
horizontal position; side mounting is also acceptable.
Locate it where vibration, shock, and mechanical load-
ing are minimal. Refer to piping diagram (Figure 2 on
page 2).
Figure 1. Pressure switch basic dimensions:
W0170-00
HEX
ADJUSTMENT
SCREW
MAIN ADJUSTMENT
WHEEL
4-1/4"
5-1/8"
LOCKING SCREW
1/2" NPT
COM
A
B
GROUND
SCREW
(GREEN)
SWITCH #2
I56-0551-007R
