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D770-28-00 1 I56-1430-002R

PIBVEXP Explosion Proof

Post Indicator and Butterfly Valve 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

on the installation and operation of supervisory switches.

Purchasers who install supervisory switches for use by oth-

ers must leave this manual or a copy of it with the user.

These instructions apply to System Sensor switches for post

indicator and butterfly type valves. Read all instructions

carefully before beginning. Follow only those instructions

that apply to the model being installed.

CAUTION

To prevent ignition of hazardous atmospheres, disconnect

supply circuit before opening. Keep assembly tightly closed

when in operation. Do NOT leave unused wires exposed.

All supervisory switch installations must comply with local

codes and ordinances and the requirements of the author-

ity having jurisdiction. Additional information is available

in National Fire Protection Association standards NFPA 13,

13D, 13R, 71, and 72.

Specifications

Contact Ratings: One SPDT (Form C) Switch

15 A @ 125/250/480 VAC; 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC

1/2 A @ 125 VDC; 1/4 A @ 250 VDC

Dimensions: 3.75

″

L X 3.25

″

D X 4.5

″

Operating Temperature Range: –40°F - 160°F (–40°C – 71°C)

Maximum Stem Extension: 2.1875

″

Shipping Weight: 1-3/4 lb.

Enclosure Rating: UL Listed explosion proof switch enclosure for use in hazardous locations.

Class I, Groups C and D; Class II, Groups E. F and G

General Information for Post Indicator Valves and

Butterfly Valves

1. Model PIBVEXP is designed for installation in a

⁄2″ NPT

tapped hole and located so that the actuating lever of the

switch engages the target or flag of the valve . The switch

actuating lever is spring loaded against the flag or target

of the valve and is released when the valve moves toward

the closed position from the fully open position.

2. Model PIBVEXP is equipped with a removable

⁄2″ NPT

pipe nipple which is locked in place with two set screws.

A hex wrench is provided for this feature. These models also

include an adjustable length actuating lever which elimi-

nates any need for alteration of the length of the lever.

1 2 3 4

Indice de contenidos

Pagina 1 - PIBVEXP Explosion Proof

D770-28-00 1 I56-1430-002RPIBVEXP Explosion ProofPost Indicator and Butterfly Valve SwitchINSTALLATION AND MAINTENANCE INSTRUCTIONS 3825 Ohio Ave

Pagina 2

D770-28-00 2 I56-1430-002RSection 1Installation Instructions For Post Indicator Valves1. There are two types of post indicator valves - ri

Pagina 3 - D770-28-00 3 I56-1430-002R

D770-28-00 3 I56-1430-002R7. Slide the actuating arm into the valve until it bottoms on the flag, but do not tighten the lever screw.8. Open the

Pagina 4

D770-28-00 4 I56-1430-002R © System Sensor 2005System Sensor warrants its enclosed supervisory switch to be free from defects in material

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