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System Sensor WFD Series User Manual

System Sensor WFD Series
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D770-01-00 8 I56-459-07
© System Sensor 1996
Three-Year Limited Warranty
System Sensor warrants its enclosed waterflow detector to be free from de-
fects in materials and workmanship under normal use and service for a
period of three years from date of manufacture. System Sensor makes no
other express warranty for this waterflow detector. No agent, representa-
tive, dealer, or employee of the Company has the authority to increase or
alter the obligations or limitations of this Warranty. The Company’s obli-
gation of this Warranty shall be limited to the repair or replacement of any
part of the waterflow detector which is found to be defective in materials
or workmanship under normal use and service during the three year pe-
riod commencing with the date of manufacture. After phoning System
Sensor’s toll free number 800-SENSOR2 (736-7672) for a Return Authori-
zation number, send defective units postage prepaid to: System Sensor,
Repair Department, RA #__________, 3825 Ohio Avenue, St. Charles, IL
60174. Please include a note describing the malfunction and suspected
cause of failure. The Company shall not be obligated to repair or replace
units which are found to be defective because of damage, unreasonable
use, modifications, or alterations occurring after the date of manufacture.
In no case shall the Company be liable for any consequential or incidental
damages for breach of this or any other Warranty, expressed or implied
whatsoever, even if the loss or damage is caused by the Company’s negli-
gence or fault. Some states do not allow the exclusion or limitation of inci-
dental or consequential damages, so the above limitation or exclusion may
not apply to you. This Warranty gives you specific legal rights, and you
may also have other rights which vary from state to state.
1. Waterflow detectors may not work or operate properly if
sprinkler piping being monitored is plugged with pipe
scale, mud, stones or other foreign material. Sprinkler
systems should be checked regularly for such blocking
material, following the instructions in Chapter 5 of NFPA
Standard 13A.
2. Alarms generated by the activation of waterflow detec-
tors may not be received by a central station if telephone
or other communication lines to the detector are out of
service, disabled, or open.
3. Vane-type waterflow detectors have a normal service life
WARNING
The Limitations of Waterflow Alarm Devices
of 10-15 years. Hard water systems, however, may re-
duce waterflow detector service life to 4 or 5 years.
4. Waterflow detectors are not a substitute for insurance.
Building owners should always insure property and lives
being protected by sprinkler systems.
5. If valves controlling the water supply to a sprinkler sys-
tem are closed, vane-type waterflow detectors will not
work. All valves controlling a sprinkler water supply
should be sealed or locked in the normally open posi-
tion. The normally open position should be monitored
by a sprinkler supervisory switch.
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Table of Contents

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System Sensor WFD Series Specifications

General IconGeneral
BrandSystem Sensor
ModelWFD Series
CategorySecurity Sensors
LanguageEnglish

Summary

WFD Vane-type Waterflow Detectors Specifications

Contact Ratings

Electrical specifications for device contacts.

Flow Rate Threshold

Minimum flow rate required for detector activation.

Pressure and Temperature Limits

Static pressure and operating temperature ranges.

Physical and Environmental Specs

Dimensions, pipe compatibility, and enclosure rating.

Important Information

Read Manual Carefully

Crucial information for safe and proper installation and use.

Principles Of Operation

Detector Functionality

How vane-type detectors work based on water flow.

Installation Guidelines

Detector Mounting Location

Recommendations for mounting location to ensure proper function.

Mounting Instructions

Pipe Hole Preparation

Procedure for drilling and preparing the pipe for installation.

Attaching the Detector

Steps to secure the detector to the pipe using U-bolts.

Preoperation Testing

System Leak Check After Installation

Verifying the installation for leaks before system activation.

Wiring

Switch Configuration and Connections

Details on the SPDT switches and wiring options.

Mechanical Delay Adjustment

Setting the Delay Mechanism

How to set the pneumatic delay to prevent false alarms.

Operational Testing

Testing Detector Activation

Procedure to verify the detector's activation and delay function.

Maintenance

Pre-Maintenance Safety Steps

Steps to prevent water damage and ensure safety during maintenance.

Limitations of Waterflow Detectors

Factors Affecting Detector Performance

Conditions or issues that may prevent proper detector operation.

Three-Year Limited Warranty

Warranty Coverage Details

Manufacturer's warranty terms and conditions.

WFDT/WFDTH Vane-type Waterflow Detectors Specifications

Contact Ratings and Flow

Electrical contact ratings and activation flow rate.

Dimensions and Temperature Range

Physical size and operating temperature limits.

Pipe Tee Compatibility

Types of pipe tees the detector is designed for.

Important Information

Manual Usage Guidance

Instructions for purchasers and installers on manual use.

Principles Of Operation

Detector Activation Mechanism

How water flow deflects the vane to produce an output.

Installation Guidelines

Compliance Standards

Relevant NFPA standards and local codes for installation.

Mounting Instructions

Paddle Selection and Installation

Choosing and attaching the correct paddle to the actuator.

Preoperation Testing

Switch Continuity Test

Checking switch contacts with an ohmmeter before system use.

Field Wiring

Initiating Circuit Connections

Wiring for FACP connection and local bell.

Mechanical Delay Adjustment

Adjusting Delay Settings

Modifying the delay mechanism for optimal performance.

Operational Testing

Testing Detector Response Time

Verifying detector reaction to test valve operation.

Maintenance

Detector Component Replacement

Information on replacing faulty delay or switch enclosure components.

WFDTNR Vane-type Waterflow Detector Specifications

Contact Ratings and Flow

Electrical contact ratings and activation flow rate.

Dimensions and Weight

Overall dimensions and shipping weight.

Pipe Tee Requirements

Tee depth requirements for various pipe types.

Important Information

Manual Reading Instructions

Instructions for purchasers and installers on manual use.

Principles Of Operation

Vane Detector Operation

How water flow activates the detector's switched output.

Installation Guidelines

NFPA Standard Compliance

Adherence to NFPA standards for alarm device installation.

Mounting Instructions

Fitting the Detector to the Tee

Procedure for threading the detector into the appropriate tee fitting.

Preoperation Testing

Testing Switch Contacts

Verifying switch function using an ohmmeter before system use.

Field Wiring

Connecting to Alarm Panels

Wiring instructions for connecting to fire alarm control panels.

Maintenance

Paddle Damage and Replacement

Procedure for ordering and replacing damaged paddle components.

OSY2 Gate Valve Supervisory Switch Specifications

Contact Ratings and Dimensions

Electrical contact ratings and physical dimensions of the switch.

Stem Extension and Bracket Span

Specifications for valve stem engagement and mounting.

Important Information

Manual for Valve Switches

Instructions for installation and operation of supervisory switches.

General Installation Considerations

Mounting Orientation Warning

Avoiding upward actuator mounting to prevent water ingress.

Mounting Bolts for Narrow Yokes

Recommendations for bolt positioning on narrow valve yokes.

Using J-Bolts for Limited Clearance

Instructions for using J-bolts on valves with limited space.

Installation Procedure

Valve Stem Adjustment

Steps for adjusting the valve stem for switch engagement.

General Installation Instructions

Acceptable Mounting Positions

Examples of correct and incorrect mounting positions for the switch.

Testing

Supervisory Switch Operation Test

Procedure to test switch function during valve operation.

PIBV2 Post Indicator and Butterfly Valve Supervisory Switch Specifications

Contact Ratings and Dimensions

Electrical contact ratings and physical size of the switch.

Stem Extension and Shipping

Maximum stem extension and shipping weight.

Important Information

Supervisory Switch Manual

Instructions for installation and operation of supervisory switches.

General Information for Post Indicator Valves and Butterfly Valves

Switch Engagement with Valve Flag

How the actuating lever engages the valve's target or flag.

Installation Instructions For Post Indicator Valves

Rising vs. Falling Flag Installation

Types of post indicator valve installations and switch setup.

Installation Instructions For Butterfly Valves

Mounting on Butterfly Valve Gear Housing

Procedure for installing the switch on butterfly valve gear housings.

General Installation Instructions

Actuator Lever Adjustment

Adjusting the actuating arm for proper travel and clearance.

Reversing The Action Of Pibv2

Switch Enclosure Reorientation

How to reverse the switch action by repositioning the enclosure.

Cover Tamper Switch Specifications

Contact Ratings and Dimensions

Electrical contact ratings and physical size of the tamper switch.

General Information

Tamper Switch Functionality

How the switch detects cover removal and resets.

Installation Guidelines

NFPA Compliance for Tamper Switches

Adherence to NFPA standards for alarm device installation.

Mounting Instructions

Attaching Switch to Terminal Block

Procedure for mounting the cover tamper switch bracket and switch.

Field Wiring

Wiring Tamper Switch Circuits

Wiring diagrams for connecting the tamper switch to FACP.

Operational Testing

Verifying Tamper Switch Reset

Checking that the circuit resets correctly after cover replacement.

546-8000 Cover Tamper Switch Specifications

Contact Ratings and Operating Temp

Electrical contact ratings and operating temperature range.

General Information

Cover Removal Detection

How the switch monitors removal of the pressure switch cover.

Wiring Instructions

Routing Wires for Tamper Switch

Instructions for routing wires from the tamper switch mechanism.

EPS10 Series Alarm Pressure Switches Specifications

Contact Ratings and Dimensions

Electrical contact ratings and physical size of the pressure switch.

Pressure and Temperature Limits

Maximum service pressure and operating temperature range.

Operation

Diaphragm Actuated Switches

How diaphragm movement actuates snap action switches.

Installation

Pressure Switch Mounting

Guidelines for mounting the pressure switch in various positions.

Adjustments To Factory Settings

Setting Pressure Alarm Response

Adjusting pressure switch settings for desired alarm points.

Single-Switch Model Adjustments

Procedure for adjusting EPS40-1 and EPS120-1 settings.

Dual-Switch Model Adjustments

Adjusting EPS40-2 and EPS120-2 pressure windows and settings.

EPS40 Series and EPS120 Series Supervisory Pressure Switches Specifications

Contact Ratings and Pressure Ranges

Electrical contact ratings and adjustment ranges.

Operating Temp and Enclosure

Operating temperature range and enclosure ratings.

Important Information

Manual for Supervisory Switches

Instructions for purchasers and installers on manual use.

Operation

Diaphragm Actuation of Switches

How diaphragm movement triggers switch actuation.

Installation

Pressure Switch Mounting

Guidelines for mounting the switch where vibration is minimal.

Adjustments To Factory Settings

Setting Pressure Switch Points

Adjusting factory settings for fall and rise pressure points.

Single-Switch Model Adjustment

Procedure for adjusting EPS40-1 and EPS120-1 settings.

Dual-Switch Model Adjustment

Adjusting EPS40-2 and EPS120-2 pressure windows and settings.

SSM and SSV BELL Series Specifications

Bell Series Voltage and Current

Operating voltage and average current for SSM and SSV bells.

Sound Output Levels

Sound output in decibels (dBA) for different models.

Important Information

Bell Installation Guidance

Recommendations for installing bells per NFPA and local codes.

General Description

Bell Application and Polarization

Intended use of bells and SSM series polarization for wiring supervision.

Before installing any alarm device, be thoroughly familiar with

Relevant Installation Standards

NFPA standards and local codes applicable to alarm devices.

Operation

Bell Power Requirements

Requirement for continuous power from the alarm system or panel.

Installation

Mounting the Bell Mechanism

Steps for mounting the bell mechanism to an electrical box.

Audibility Rating Measurement

Sound Level Measurement Standards

How sound output is measured according to UL Standard 464.

The Limitations of Alarm Devices

Factors Affecting Bell Audibility

Conditions that may affect the loudness or hearing of the alarm bell.

Three-Year Limited Warranty

Warranty for Bell Devices

Manufacturer's warranty terms for SSM and SSV bell series.

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