System Sensor EPS10-1, EPS10-2 User Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS

3825 Ohio Avenue, St. Charles, Illinois 60174

EPS10 Series Alarm Pressure Switches 1-800-SENSOR2, FAX: [phone]

www.systemsensor.com

SPECIFICATIONS
Contact Ratings:	10 A, 1/2 HP @ 125/250 VAC
	8 A, 125/250 VAC (LPCB only)
	2.5A @ 6/12/24 VDC
Overall Dimensions:	See Figure 1
Operating Temperature Range:	–40° to +160°F
Maximum Service Pressure:	300 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

FIGURE 1. PRESSURE SWITCH BASIC DIMENSIONS:

4-1/4"

COM

A

		SWITCH #2	HEX
	GROUND	B	ADJUSTMENT
			SCREW
	SCREW
	(GREEN)
	5-1/8"
			MAIN ADJUSTMENT
	LOCKING SCREW		WHEEL
			1/2" NPT

W0170-00

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, following 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.

OPERATION

As pressure changes, a diaphragm actuates 1 or 2 snap action switches. The pressure switch actuation is determined 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 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 black plastic hex portion of device.

WARNING

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. When utilizing switches at voltages greater than 74 VDC or 49 VAC , means to provide all-pole disconnection must be incorporated in the field wiring, such as a circuit breaker.

3.Wire the device in accordance with the National Electrical Code. Two 7⁄8″ diameter conduit connection holes have been provided in the mounting plate to accept standard 1⁄2″ conduit fittings (one is removable knock-out type). If a NEMA 4/UL 4x (waterproof unit) is required, waterproof flexible metallic conduit and appropriate conduit fittings must be used. Recommended connectors are Thomas and Betts PN 5332 (180° coupling), PN 5352 (90° coupling), and PN 5262 seal ring.

4.Connect wiring to terminals (see Figure 3 and Table 1).

TABLE 1. ELECTRICAL CONNECTIONS (REFERENCED AT FACTORY SETTINGS):

MODEL EPS10-1		MODEL EPS10-2
SWITCH AT 0 P.S.I.		SWITCHES AT 0 P.S.I.
B	B		B
COM	COM		COM
A	A	SW1	A	SW2
SWITCH AT 4-8 P.S.I. (HIGH TRIP PT.)	SWITCHES AT 4-8 P.S.I. (HIGH TRIP PT.)
B	B		B
COM	COM		COM
A	A	SW1	A	SW2
SWITCH 1	BOTH SWITCHES ACTIVATE SIMULTANEOUSLY

009R-0551-I56

D770-08-00

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I56-0551-009R