System Sensor EPS10EXP - Manual

COVER
4.9"
9.5"
LOCKING
SCREW
HEX ADJUST
SCREW
1/4" HEX HEAD
COVER
TAMPER
SET SCREW
(WRENCH
PROVIDED)
ADJUSTMENT
WHEEL
COVER
(WRENCH
PROVIDED)
MAIN ADJUSTMENT
WHEEL (TURN
COUNTERCLOSKWISE
TO INCREASE
PRESSURE)
1/2" NPT
D770-25-00 1 I56-1427-001R
EPS10EXP Explosion Proof
Alarm Pressure Switch
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, 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
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.
Operation
As pressure changes, a diaphragm actuates 2 snap action
switches. The pressure switch actuation is determined by
adjustment settings.
Specifications
Contact Ratings:
10 A, 1/2 HP @ 125/250 VAC
2.5 A @ 6/12/24 VDC
Operating Temperature Range: –40° F to +160°F
Maximum Service Pressure: 250 PSI
Maximum Adjustment Range: 4 – 20 PSI
Enclosure Rating: NEMA Type 4 — Indoor or/Outdoor Use
Hazardous Atmospheres Classification: Class I, Groups B, C, D, Div. 1
Class II, Groups E, F, G, Div. 1
Class III, Div. 1
Approximate Differential: 3 PSI throughout range
Installation
1. Back out cover tamper set screw and remove cover (Fig. 1).
2. Mounting the Switch
The device is designed to be mounted in the upright or
horizontal position; side mounting is also acceptable.
Figure 1. Pressure switch basic dimensions:
WARNING
To prevent ignition of hazardous atmospheres, disconnect
circuits before removing cover. Keep cover closed while cir-
cuits are live. Conduit runs must have sealing fittings con-
nected within 18” of the enclosure.