System Sensor eps 10 series Install and Maint Instructions

SYSTEM SENSOR Division of Pittway 3825 Ohio Avenue St Charles Illinois 60174 FAX 630 377 6495 AND MAINTENANCE INSTRUCTIONS Series Alarm Switches Ratings Dimensions Temperature Range Service Pressure Adjustment Range Rating Differential A 1 2 HP 125 250 VAC 6 12 24 VDC Figure 1 to 160 cid 176 F PSI 4 20 PSI 4x Indoor or Outdoor Use 4 Indoor or Outdoor Use PSI throughout range Read Carefully and Save instruction manual contains important information the installation and operation of alarm pressure Purchasers who install switches for use by others leave this manual or a copy of it with the user pressure changes a diaphragm actuates 1 or 2 snap ac switches The pressure switch actuation is determined adjustment settings Remove Cover all instructions carefully before installation following those instructions that apply to the model you are in is held on by two tamper resistant screws Re key is enclosed with pressure switch Mounting the Switch installing any alarm device be thoroughly familiar 72 13 13A Maintenance and Use of Protec Signaling Systems of Sprinkler Systems Testing and Maintenance of Sprin Systems applicable NFPA standards local codes and the re of the authority having jurisdiction to follow these directions may result in failure of the to report an alarm condition System Sensor is not for devices that have been improperly installed or maintained device is designed to be mounted in the upright or position side mounting is also acceptable it where vibration shock and mechanical load are minimal Refer to piping diagram Figure 2 on 2 1 Pressure switch basic dimensions 1 not use in potentially explosive atmospheres Do not SCREW unused wires exposed ADJUSTMENT NPT Manuals Online 2 Typical piping diagram for EPS10 1 EPS10 2 TO ALARM CIRCUIT FIRE ALARM PANEL ALARM OFF SYSTEM Y Y ALARM OFF SYSTEM TO ALARM CIRCUIT FIRE ALARM PANEL TO ALARM CIRCUIT FIRE ALARM PANEL ALARM OFF SYSTEM Y Mount the device directly to the line via the 1 2 NPT connection The use of teflon pipe sealant is recommended Be sure the fitting is tight to prevent leaks Apply tightening torque to the black plastic hex por of device voltage Electrocution hazard Do not handle live AC or work on a device to which AC power is applied so may result in severe injury or death 1 Electrical connections referenced at factory EPS10 1 AT 0 P S I AT 4 8 P S I HIGH TRIP PT EPS10 2 AT 0 P S I AT 4 8 P S I HIGH TRIP PT 1 SWITCHES ACTIVATE SIMULTANEOUSLY Wire the device in accordance with the National Electri Code Two 7 8 diameter conduit connection holes been provided in the mounting plate to accept stan 1 2 conduit fittings one is removable knock out If a NEMA 4 UL 4x waterproof unit is required flexible metallic conduit and appropriate fittings must be used Recommended connectors Thomas and Betts PN 5332 180 cid 176 coupling PN 5352 coupling and PN 5262 seal ring Connect wiring to terminals see Figure 3 and Table 1 3 Switch terminals 1 2 I T WIRE AS SHOWN FOR OF CONNECTION NOT ALLOW STRIPPED WIRE TO EXTEND BEYOND HOUSING DO NOT WIRES Manuals Online To Factory Settings EPS10 1 and EPS10 2 devices are pre adjusted at the to alarm at 4 PSI on rising pressure see Table 2 switch settings may be adjusted in the field to ob a different pressure alarm response from 4 PSI to 20 The switch has an override feature on the adjustment to prevent exceeding the 20 PSI max setting of switch This override feature carries with it a tolerance that may limit the upper adjustment to 16 PSI must be used when setting the switch to ensure that lower limit of 4 PSI is not exceeded This will allow the to reset within the 3 PSI differential stated Install pressure switch as stated in of instruction manual Attach pressure test to system Back off locking screw see Figure 1 to allow main ad wheel to rotate freely Test trip point by slowly introducing pressure from the test source When trip point is found reduce to zero Rotate main adjustment wheel coun to increase pressure and retest until switch point is at the desired pressure setting 4 PSI Each number represents an approximate trip change of 0.2 PSI One full rotation changes the point setting by approximately 2.5 PSI A reset dif of approximately 3 PSI is typical throughout the adjustment range of switch Retest the set point several times to ensure accuracy of Re seat locking screw The sensor assembly is not field replaceable Do attempt to disassemble these parts If you have questions consult System Sensor System Sen recommends careful consideration of the fol factors when specifying and installing Pressure Switches Always refer to the In and Maintenance Instruction for specific on individual devices before in the unit Electrical ratings stated in literature and on name should not be exceeded Overload on switch can cause failure on the first Always wire devices according to national and electrical codes Install units away from shock and vibration Proper fittings should be used to prevent moisture entering the enclosure via the conduit Test all devices for proper operation after initial instal Perform preventive maintenance and periodic as required by the applicable NFPA standards not less than bi monthly Install a back up control for all critical applications control failure could endanger life or property backup control to serve as a high or low limit con is especially recommended for applications where runaway condition could result 2 SETTINGS PSI Do not mount unit where ambient temperatures will Switch Switch 8 8 PSI Diff PSI Diff published limits Avoid impact or mechanical loading Manuals Online Limited Warranty Sensor warrants its enclosed pressure switch to be free from de in materials and workmanship under normal use and service for a of three years from date of manufacture System Sensor makes no express warranty for this pressure switch No agent representative or employee of the Company has the authority to increase or alter obligations or limitations of this Warranty The Company obligation this Warranty shall be limited to the repair or replacement of any part of pressure switch which is found to be defective in materials or work under normal use and service during the three year period com with the date of manufacture After phoning System Sensor toll num