Safe Signal EPS40EXP Manuals

COVER 4.9" 9.5" LOCKING SCREW HEX ADJUST SCREW 1/4" HEX HEAD COVER TAM PER SET SCREW (WRENCH PROVIDED) ADJUSTMENT WHEEL COVER (WRENCH PROVIDED) MAIN ADJUSTMENT WHEEL (TURN COUNTERCLOSKWISE TO INCREASE PRESSURE) 1/2" NPT EPS40EXP and EPS120EXP Explosion Proof Supervisory Pressure Switches INSTALLATION AND MAINTENANCE INSTRUCTIONS Important Please Read Carefully and Save This instruction manual contains important information about the installation and operation of supervisory 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: National Fire Alarm Code NFPA 13: Installation of Sprinkler Systems NFPA 25: Inspection, Testing, and Maintenance of Water- based Fire Protection Systems Other applicable NFPA standards, local codes, and the require- ments of the authority having jurisdiction. Failure to follow these directions may result in failure of the device to report an alarm condition. Safe Signal is not respon- sible for devices that have been improperly installed, tested, or maintained. Specifications Contact Ratings: 10 A, 1/2 HP @ 125/250 VAC 2.5A @ 6/12/24 VDC Operating Temperature Range: –40°F to +160°F EPS40EXP EPS120EXP Maximum Service Pressure (in PSI): 250 250 Adjustment Range: 10-100 10-200 Approximate Differential: 3 PSI @ 10 PSI 3 PSI @ 10 PSI 8 PSI @ 100 PSI 9 PSI @ 200 PSI Enclosure Rating: NEMA Type 4 — Indoor/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 Operation As pressure changes, a diaphragm actuates 2 snap action switch- es. The pressure switch actuation is determined by adjustment settings. Figure 1. Pressure switch basic dimensions: W0174-00 I56-1428-C 1 I56-1428-C 4/21