3825 Ohio Avenue • St. Charles, IL 60174

Phone: 800-SENSOR2 • Fax: 630-377-6495

©2006 System Sensor.

Product specifications subject to change without notice. Visit systemsensor.com for

current product information, including the latest version of this data sheet.

A05-0177-010 • 9/06 • #1676

Ordering Information

Part No.

Description

EPS40-1

Low Pressure Supervisory Switch, One SPDT, 10–100 PSI

EPS40-2

High/Low Pressure Supervisory Switch, Two SPDT, 10–100 PSI

EPSA40-1

Low Pressure Supervisory Switch, One SPDT, 10–100 PSI (ULC Model)

EPSA40-2

High/Low Pressure Supervisory Switch, Two SPDT, 10–100 PSI (ULC Model)

Replacement Parts

S07-66-XX

Replacement Tamper Screws for Cover of EPS

WFDW

Replacement Tamper Proof Wrench for Cover of EPS

546-8000

Cover Tamper Switch for EPS Series

Typical Sprinkler Applications

Pressure Switch Basic Dimensions

Electrical Connections

HEX

ADJUSTMENT

SCREW

MAIN ADJUSTMENT

WHEEL

LOCKING

SCREW

GROUND

SCREW

(GREEN) SWITCH #2

Specifications, EPS40-1 and EPS40-2 (continued)

Physical/Operating Specifications

Maximum Operating

Pressure

250 psi

Operating Temperature

Range

Indoor or outdoor use:

–40°F to 160°F (–40°C to 71°C)

Maximum Adjustment

Pressure Range

10 to 100 psi

Cover Tamper Switch

UL Models: Optional P/N 546-8000

ULC Models: Factory Installed

Differential

Approximately 3 psi @ 10 psi, 6 psi @ 100 psi

Enclosure

Rated UL 4x, NEMA 4 for indoor or outdoor use

Factory Setting

EPS40-1 operates at decreasing pressure at 30 psi

EPS40-2 operates at increasing pressure at 50 psi

and decreasing pressure at 30 psi

Shipping Weight

1.2 lbs. (.54 Kg)

Switch Contact Ratings

EPS10-1: One set SPDT (Form C)

EPS10-2: Two sets SPDT (Form C)

10.0 A, ½ HP @ 125/250 VAC

2.5 A @ 6/12/24 VDC

Service Use

Automatic Sprinkler: NFPA 13

One or Two Family Dwelling: NFPA 13D

Residential Occupancies up to 4 Stories: NFPA 13R

National Fire Alarm Code: NFPA 72

Pressure Connection

½˝ NPT male

Warranty

3 years

Dimensions

5.12˝ H × 3.325˝ W × 4.250˝ L

(13.0 cm × 8.4 cm × 10.8 cm)

DRY

PIPE

VALVE

OS & Y

VALVE

WATER

BY-PASS

TEST

VALVE

LOCAL ALARM

SHUT OFF

VALVE

WATER

MOTOR

GONG

CHECK

VALVE

EPS40

CHECK

VALVE

AIR LINE

SHUT-OFF

VALVE

INSTALL

BLEEDER

VALVE FOR

TESTING

EPS40

DRY SYSTEM

WIRE TO SUPERVISORY

CIRCUIT OF FIRE ALARM

CONTROL PANEL

WIRE TO ALARM

INDICATING CIRCUIT

OF FIRE ALARM

CONTROL PANEL

TO

SPRINKLER

SYSTEM

MODELS EPS40-1

SWITCH AT 40 P.S.I. (NORMAL)

SWITCH AT 30 P.S.I. (LOW TRIP PT.)

B

COM

A

A

COM

B

SWITCH 1

SW2

SW1

SWITCHES AT 40 P.S.I. (NORMAL)

SWITCHES AT 30 P.S.I. (LOW TRIP PT.)

SW1

SW2

MODELS EPS40-2

SWITCHES AT 50 P.S.I. (HIGH TRIP PT.)

SW1

SW2

B

COM

A

B

COM

A

B

COM

A

A

COM

B

A

COM

B

A

COM

B