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
″
H
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
1⁄2
″
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
1⁄2
″
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.