System-sensor OSYEXP Manuel d'utilisateur télécharger pdf

D770-27-00 1 I56-1429-002R

OSYEXP Explosion Proof

Gate Valve Supervisory 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 manual contains important information about the

installation and operation of supervisory switches. These

instructions apply to System Sensor switches for outside

screw and yoke valves only. Read all instructions carefully

before beginning installation.

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.

General Installation Considerations

The OSYEXP Supervisory Switch can be mounted on open

yoke valves between

/2″ and 12″ in diameter. The switch

is designed to supervise the open condition of the OS & Y

Gate Valve in hazardous locations.

All OSYEXP models are equipped with a ground screw

inside the switch housing for those applications where

grounding is required.

Narrow Yoke Valves

As Figure 1 suggests, installing the valve with mounting

bolts inside the yoke is recommended. However, some

valves may have yokes that are too narrow for this arrange-

ment. If this is the case, the bolts can be positioned on the

outside of the yoke.

Limited Clearance Valves

The OSYEXP mounting bracket fits most of the open yoke

valves used in fire protection systems. However, some of

these valves, especially those less than 1

/2″ in diameter,

have irregularly shaped yokes or such limited clearances

that the clamping bar cannot be installed properly and/or

it causes the valve to bind. If this is the case, the use of

the supplied J-bolts is required to attach the OSYEXP to the

valve (see J-Bolt Detail, Figure 1).

Installation Procedure

See Figures 2 and 3, as required, while performing the pro-

cedure that follows.

Perform step 1 on valves 1

/2″ in diameter and smaller

only. Proceed directly to step 2 if the switch is being

installed on a valve larger than 1

/2″ in diameter.

1. Remove and discard the two C-clips and roller from the

actuating lever.

2. Set the valve to its fully open position. Remove the

OSYEXP Supervisory Switch from the carton and adjust

the position of the retaining washers to provide suffi-

cient bolt length for the yoke thickness of the valve.

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: 7″L X 3.125″D X 4.875″H

Maximum Stem Extension: 2.875″

Bracket Span: 7″

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

Shipping Weight: 2-1/4 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

1 2 3 4

Résumé du contenu

Page 1 - Gate Valve Supervisory Switch

D770-27-00 1 I56-1429-002ROSYEXP Explosion ProofGate Valve Supervisory SwitchINSTALLATION AND MAINTENANCE INSTRUCTIONS 3825 Ohio Avenue, St. Char

Page 2 - D770-27-00 2 I56-1429-002R

D770-27-00 2 I56-1429-002RFigure 1:J-Bolt Detail:Switch HousingActuating LeverMounting BracketYokeRetaining WasherNutHex WrenchClamping BarCarriage

Page 3 - D770-27-00 3 I56-1429-002R

D770-27-00 3 I56-1429-002R Position the switch on the valve with the bolts on the inside (preferably) or outside of the yoke, depending on c

Page 4 - Typical Local Bell Connection

D770-27-00 4 I56-1429-002R © System Sensor 20051. Alarms generated by the actuation of the activating lever may not be received by a central statio

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System-sensor OSYEXP Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Équipement System-sensor OSYEXP. System Sensor OSYEXP User Manual Manuel d'utilisatio

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