Victaulic FireLock NXT 764 Series Installation, Maintenance, And Testing Manual
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Victaulic FireLock NXT 764 Series Installation, Maintenance, And Testing Manual

Alternate wet/dry valve
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INSTALLATION,MAINTENANCE,ANDTESTINGMANUAL
FireLockNXT™AlternateWet/DryValve
SERIES764
WARNING
www.victaulic.com
VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA.
REV_C
HANG THESE INSTRUCTIONS ON THE
INSTALLED VALVE FOR EASY FUTURE REFERENCE
WARNING
 •  Failuretofollowinstructionsandwarningscancauseproduct
failure,resultinginseriouspersonalinjuryandpropertydamage.
• Readandunderstandallinstructionsbeforeattemptingto
installanyVictaulicpipingproducts.
• Wearsafetyglasses,hardhat,andfootprotection.
• Savethisinstallation,maintenance,andtestingmanualfor
future r eference.
Ifyouneedadditionalcopiesofanyliterature,orifyouhaveany
 q uestionsconcerningthesafeinstallationandoperationofthis
product,contactVictaulic,P.O.Box31,Easton,PA18044-0031,
USA,Telephone:1-800PICKVIC,e-mail:pickvic@victaulic.com.
I-764

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Summary of Contents for Victaulic FireLock NXT 764 Series

  • Page 1  •  Failuretofollowinstructionsandwarningscancauseproduct failure,resultinginseriouspersonalinjuryandpropertydamage. • Readandunderstandallinstructionsbeforeattemptingto installanyVictaulicpipingproducts. • Wearsafetyglasses,hardhat,andfootprotection. • Savethisinstallation,maintenance,andtestingmanualfor future r eference. Ifyouneedadditionalcopiesofanyliterature,orifyouhaveany  q uestionsconcerningthesafeinstallationandoperationofthis product,contactVictaulic,P.O.Box31,Easton,PA18044-0031, USA,Telephone:1-800PICKVIC,e-mail:pickvic@victaulic.com. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C...

  • Page 3: Table Of Contents

    Troubleshooting – Wet Configuration ......43 www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C...

  • Page 4: Installer Safety Instructions

    PROTECTTHESYSTEMFROMFREEZINGCONDITIONS.THE VALVEANDSUPPLYPIPINGMUSTBEPROTECTEDFROM FREEZINGTEMPERATURESANDMECHANICALDAMAGE. IFTHEINLETWATERSUPPLYISINTERRUPTEDFORANY REASON,AND S YSTEMSUPPLYPRESSURETOTHEVALVE DECREASES,MAKESURETHEDIAPHRAGMCHARGELINEIS FULLYPRESSURIZEDBEFOREPLACINGTHE S YSTEMBACK INSERVICE. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_2 REV_C...

  • Page 5: Introduction

    INSTALLATION,MAINTENANCE,ANDTESTINGMANUAL FireLockNXT™AlternateWet/DryValve SERIES764 INTRODUCTION The following instructions are a guide for proper installation of Victaulic Series 764 FireLock NXT Alternate Wet/Dry Valves. These instructions involve pipe that is properly prepared and grooved in accordance with current Victaulic specifications. NOTICE • Drawingsand/orpicturesinthismanualmaybeexaggeratedforclarity.

  • Page 6: Exploded View Drawing - Trim Components

    764 FireLock NXT Alternate Wet/Dry Valve, a ball valve must be added to the inlet of the Series 75D. This inlet ball valve must be closed while the valve is in the “wet configuration” to prevent water from continuously draining from the system. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_4 REV_C...

  • Page 7: Exploded View Drawing - Internal Valve Components

    * NOTE: The 1½-inch/48.3-mm and 2-inch/60.3-mm valve sizes contain washers under the heads of the cover plate bolts. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_5...

  • Page 8: Section View Drawing And Description - Series 776 Low-Pressure Actuator

    Middle Chamber Outlet Eyelet Upper Diaphragm Assembly Lower Chamber VENT TO ATMOSPHERE AIR IN INLET OUTLET Exaggerated for Clarity www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_6 REV_C...

  • Page 9: Series 746-Lpa Dry Accelerator

    To Pressure Gauge Air Inlet CROSS-SECTION WITH UPPER CHAMBER ROTATED 45° AND BOLT REMOVED FOR CLARITY Exaggerated for Clarity www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_7...

  • Page 10: Air Supply Requirements

    Strainer (100 Mesh) Spring-Loaded, Soft-Seated Ball Check Valve Fast Fill Ball Valve (Normally Closed) System Capacity (in gallons) www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_8 REV_C...

  • Page 11: Victaulic Series 757P Air Maintenance Trim Assembly (Amta) With Pressure Switch Option

    Therefore, charging the air regulator above the set point could cause premature operation of a valve installed with a Series 746-LPA Dry Accelerator. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_9...

  • Page 12: Important Installation Information

    * Teflon is a registered trademark of the DuPont Company www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_10 REV_C...

  • Page 13: Compression Fitting And Tube Installation

    NEVER insert a plug into the out- let of the auto drain, drip check, or actuator in place of the compression fitting/tube. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_11...

  • Page 14: Setup Instructions For Placing The Dry Configuration In Service

    3a. Confirm that the system has been depressurized. The gauges should indicate zero pressure. Open the dry system air supply ball valve. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_12 REV_C...
  • Page 15 Auto Drain Sleeve, and confirm that water is flowing through the Series 776 Low-Pressure Actuator. 9. Close the alarm line drain ball valve. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_13...
  • Page 16 Repair any leaks or openings and restart the setup procedures. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_14 REV_C...
  • Page 17 19. Pull up on the Auto Drain Sleeve until the screw is in the set (“UP”) position. Verify that there is pressure on the gauge to the diaphragm charge line. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_15...
  • Page 18 0.1-Bar/10-kPa/11/2-psi leakage in 24 hours. 26. Close the water supply main drain valve when a steady flow of water occurs. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_16 REV_C...
  • Page 19 31. Confirm that all valves are in their normal operating positions (refer to the table to the right). www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_17...

  • Page 20: Setup Instructions For Converting The Dry Configuration To The Wet Configuration

    Confirm that the alarm test ball valve is closed. Open the alarm line drain ball valve. Close the dry system air supply ball valve. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_18 REV_C...
  • Page 21 14. Confirm that all valves are in their normal operating positions (refer to the following table). www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_19...

  • Page 22: External Inspection

    If the air chamber’s pressure is below the system air pressure, follow the “Troubleshooting” section. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_20 REV_C...

  • Page 23: Monthly Inspection For The Wet Configuration

    Wet System Bypass Ball Valve Open Drip Check Isolation Ball Valve Closed Alarm Line Drain Ball Valve Open www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_21...

  • Page 24: Required System Tests

    Confirm that there is no leakage from the intermediate valve chamber. The drip check in the alarm line should not be leaking water or air. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_22 REV_C...

  • Page 25: Main Drain Test For The Wet Configuration

    Verify that all valves are in their normal operating positions (refer to the table on the next page). www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_23...

  • Page 26: Water Flow Alarm Test For The Dry Or Wet Configuration

    Open the water supply main drain valve fully to flush the water supply of any contaminants. Close the water supply main drain valve. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_24 REV_C...
  • Page 27 Verify that all alarms stopped sounding, that the alarm line drained properly, and that remote station alarms reset properly. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_25...

  • Page 28: Water Level And Low Air Alarm Tests For The Dry Configuration

    “Placing the System in Service” section. Record the system air pressure at which the low air alarm activates. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_26 REV_C...
  • Page 29 13. If a Series 746-LPA Dry Accelerator is installed, open the isolation ball valve. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_27...
  • Page 30 20. Provide test results to the authority having jurisdiction, if required. 16. Close the water supply main drain valve when a steady flow of water occurs. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_28 REV_C...

  • Page 31: Required Operational (Trip) Tests For The Dry Configuration

    Open the water supply main drain valve fully to flush the water supply of any contaminants. Close the water supply main drain valve. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_29...
  • Page 32 14. Perform all steps in the “Placing the System in Service” section. Control Valve 10. Close the water supply main control valve fully. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_30 REV_C...

  • Page 33: Full Operational (Trip) Test For The Dry Configuration

    Close the water supply main control valve. Open the water supply main drain valve fully to flush the water supply of any contaminants. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_31...

  • Page 34: Required Internal Inspection

    14. Close the system main drain valve. 15. Perform all steps in the “Placing the System in Service” section. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_32 REV_C...
  • Page 35 Confirm that water is not flowing from the water supply main drain valve. Close the slow-fill ball valve on the AMTA. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_33...

  • Page 36: Valve Body

    17. Place the system back in service by following the “Placing the 13. Push the latch back (toward the diaphragm). System in Service” section. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_34 REV_C...

  • Page 37: Maintenance

    Remove the seal assembly bolt/bolt seal from the clapper seal. ture that is under the seal washer and on the clapper seal. CAUTION • UseonlyVictaulic-suppliedreplacementparts. Failuretofollowthisinstructioncouldcauseimpropervalve operation,resultinginpropertydamage. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_35...

  • Page 38: Clapper

    Insert the seal washer carefully underneath the sealing lip of the gasket. Remove any contaminants, dirt, and mineral deposits from the clapper. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_36 REV_C...

  • Page 39: Removing And Replacing The Clapper Assembly

    13. Place the system back in service by following the “Placing the System in Service” section. Remove the clapper from the valve body. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_37...
  • Page 40 10. Place the system back in service by following the “Placing the and valve body. System in Service” section. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_38 REV_C...

  • Page 41: Installing The Cover Plate Gasket And Cover Plate

    CAUTION • DONOTover-tightenthecoverplatebolts. Failuretofollowthisinstructioncouldcausedamagetothe coverplategasket,resultinginvalveleakage. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_39...

  • Page 42: Removing And Replacing The Diaphragm Assembly

    Clean the back of the valve body to remove any debris that may interfere with proper diaphragm seating. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_40 REV_C...

  • Page 43: Replacing The Strainer Screen For Series 776 Low-Pressure Actuators

    Refer to the applicable trim drawing for details. Place the system back in service by following the “Placing the System in Service” section. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_41...

  • Page 44: Troubleshooting - Series 776 Low-Pressure Actuator

    The diaphragm is damaged. Contact Victaulic. Air is leaking from the diaphragm assembly. The diaphragm is damaged. Contact Victaulic. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764_42 REV_C...

  • Page 45: Troubleshooting - Wet Configuration

    VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_C I-764_43...
  • Page 48 I-764 INSTALLATION,MAINTENANCE,ANDTESTINGMANUAL FireLockNXT™AlternateWet/DryValve SERIES764 WCAS-7JUNZH For complete contact information, visit www.victaulic.com I-7644656REVCUPDATED11/2008Z000764000 VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-764...

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