Systemsensor EPS40-1 Supervisory pressure switch Datasheet

EPS40-1 AND EPS40-2
Supervisory Pressure
Switches
System Sensor EPS40 Series switches are designed for
use in dry pipe systems or pressure tanks and water
pressure supplies of automatic water control valves.
Features
The EPS40-1 has a single SPDT switch while the EPS40-2 model
contains two SPDT switches. The EPS40 Series features field
adjustable pressure sensitivity to provide an alarm response between
10 and 100 psi. All models are factory set for use in a nominal 40 psi
system. The EPS40-1 is factory set to respond at 30 psi at decreasing
pressure while the EPS40-2 is factory set to respond at 50 psi on
rising pressure and 30 psi at decreasing pressure. The pressure
adjustment wheel requires no special tools and does not affect
switch synchronization on the EPS40-2. The EPS40-1 and EPS40-2
supervisory pressure switches are NEMA 4 rated.
• Sensitivity adjustment wheel, no special tools required
• Reinforced diaphragm resists pressure spikes
• Two conduit entrances
• Both one- and two-switch models available
Agency Listings
118f/01
0X0A7.AY
CS169
S739
VdS
G4020028
7770-1209:147
167-93-E
Specifications, EPS40-1 and EPS40-2
Architectural/Engineering Specifications EPS40-1 (SPDT), EPS40-2 (2/SPDT)
Model shall be an EPS40-1 or EPS40-2 pressure type waterflow switch as manufactured by System Sensor of St. Charles, IL. They shall be installed on the sprinkler
system with connection as shown on the drawings and/or as specified herein. Pressure switches shall be of the bellows-activated type. Switches shall have
a maximum service pressure rating of 250 psi and shall be adjustable from 10 – 100 psi. There shall be one (1) or two (2) SPDT contacts rated at 10.0 Amp @
125/250 VAC and 2.5 Amp @ 6/12/24 VDC. The contractor shall furnish and install, where indicated on the plans, pressure switches according to appropriate
NFPA standards. Switches shall be provided with a ½˝ NPT male pressure connection to be connected into the air supply line on the system side of any shut-off
valve. Switches shall provide 1 knockout type and 1 open hole for ½˝ conduit fitting attachment and a ground screw provision for electrical grounding.
The switch enclosure shall be weatherproof and carry a UL 4x/NEMA 4 rating when used with proper electrical fittings and conduit. The cover shall incorporate
tamper-resistant screws. The unit shall be listed by Underwriters Laboratories, Inc., the California State Fire Marshal, MEA, CSFM, LPCB, VdS and approved by
Factory Mutual.
Specifications, EPS40-1 and EPS40-2 (continued)
Physical/Operating Specifications
Maximum Operating
250 psi
Pressure
Maximum Adjustment
10 to 100 psi
Pressure Range
Differential
Approximately 3 psi @ 10 psi, 6 psi @ 100 psi
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
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
Pressure Connection
½˝ NPT male
Dimensions
5.12˝ H × 3.325˝ W × 4.250˝ L
(13.0 cm × 8.4 cm × 10.8 cm)
Operating Temperature
Range
Cover Tamper Switch
Enclosure
Shipping Weight
Service Use
Warranty
Indoor or outdoor use:
–40°F to 160°F (–40°C to 71°C)
UL Models: Optional P/N 546-8000
ULC Models: Factory Installed
Rated UL 4x, NEMA 4 for indoor or outdoor use
1.2 lbs. (.54 Kg)
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
3 years
Typical Sprinkler Applications
EPS40
WIRE TO SUPERVISORY
CIRCUIT OF FIRE ALARM
CONTROL PANEL
WIRE TO ALARM
INDICATING CIRCUIT
OF FIRE ALARM
CONTROL PANEL
EPS40
TO
SPRINKLER
SYSTEM
INSTALL
BLEEDER
VALVE FOR
TESTING
CHECK
VALVE
CHECK
VALVE
DRY
PIPE
VALVE
AIR LINE
SHUT-OFF
VALVE
WATER
BY-PASS
TEST
VALVE
OS & Y
VALVE
WATER
MOTOR
GONG
LOCAL ALARM
SHUT OFF
VALVE
DRY SYSTEM
Electrical Connections
Pressure Switch Basic Dimensions
MODELS EPS40-1
SWITCH AT 40 P.S.I. (NORMAL)
B
COM
A
SW1
SWITCH 1
51/8″
B
COM
A
SW1
HEX
ADJUSTMENT
SCREW
MAIN ADJUSTMENT
WHEEL
SW2
SWITCHES AT 50 P.S.I. (HIGH TRIP PT.)
B
COM
A
M
SWITCHES AT 40 P.S.I. (NORMAL)
B
COM
A
CO
B
COM
A
SWITCH #2
B
SWITCH AT 30 P.S.I. (LOW TRIP PT.)
GROUND
SCREW
(GREEN)
SWITCHES AT 30 P.S.I. (LOW TRIP PT.)
B
B
COM
COM
A
A
SW1
SW2
A
B
COM
A
41/4″
MODELS EPS40-2
LOCKING
SCREW
1/2″
NPT
SW2
Ordering Information
Part No.
EPS40-1
EPS40-2
EPSA40-1
EPSA40-2
Replacement Parts
S07-66-XX
WFDW
546-8000
Description
Low Pressure Supervisory Switch, One SPDT, 10–100 PSI
High/Low Pressure Supervisory Switch, Two SPDT, 10–100 PSI
Low Pressure Supervisory Switch, One SPDT, 10–100 PSI (ULC Model)
High/Low Pressure Supervisory Switch, Two SPDT, 10–100 PSI (ULC Model)
Replacement Tamper Screws for Cover of EPS
Replacement Tamper Proof Wrench for Cover of EPS
Cover Tamper Switch for EPS Series
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
Similar pages