Victaulic FireLock NXT 769 Series Installation, Maintenance, And Testing Manual
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Victaulic FireLock NXT 769 Series Installation, Maintenance, And Testing Manual

Preaction valve with electric/pneumatic actuator 767 series
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INSTALLATION, MAINTENANCE, AND TESTING MANUAL
FireLock NXT™ Preaction Valve
with Series 767 Electric/Pneumatic Actuator
SERIES 769
(DOUBLE-INTERLOCKED, ELECTRIC/PNEUMATIC RELEASE)
WARNING
www.victaulic.com
VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA.
REV_D
HANG THESE INSTRUCTIONS ON THE
INSTALLED VALVE FOR EASY FUTURE REFERENCE
WARNING
•
Failure to follow instructions and warnings can cause product
failure, resulting in serious personal injury and property
damage.
•
Read and understand all instructions before attempting to
install any Victaulic piping products.
•
Wear safety glasses, hardhat, and foot protection.
•
Save this installation, maintenance, and testing manual for
future reference.
If you need additional copies of any literature, or if you have any
questions concerning the safe installation and operation of this
product, contact Victaulic, P.O. Box 31, Easton, PA 18044-0031,
USA, Telephone: 1-800 PICK VIC, e-mail: pickvic@victaulic.com.
I-769P-EPA

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  • Page 1 Victaulic, P.O. Box 31, Easton, PA 18044-0031, USA, Telephone: 1-800 PICK VIC, 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_D...

  • Page 3: Table Of Contents

    Troubleshooting – System ....... . . 39 www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D...

  • Page 4: Installer Safety Instructions

    REASON, AND SYSTEM SUPPLY PRESSURE TO THE VALVE DECREASES, MAKE SURE THE DIAPHRAGM CHARGE LINE IS FULLY PRESSURIZED BEFORE PLACING THE SYSTEM BACK IN SERVICE. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-769P-EPA_2...

  • Page 5: Introduction

    SERIES 769 (DOUBLE-INTERLOCKED, ELECTRIC/PNEUMATIC RELEASE) INTRODUCTION The following instructions are a guide for proper installation of Victaulic Series 769 FireLock NXT Preaction Valves. These instructions involve pipe that is properly prepared and grooved in accordance with current Victaulic specifications. NOTICE •...

  • Page 6: Exploded View Drawing - Trim Components

    For information regarding installation of the Series 75B Supplemental Alarm Device or the Series 7C7 Air Maintenance/Compressor Assembly (not shown), refer to the instructions supplied with the product. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-769P-EPA_4...

  • 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_D I-769P-EPA_5...

  • Page 8: Section View Drawing And Description - Series 767 Electric/Pneumatic Actuator

    To Drain and the screw elevated. 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_D I-769P-EPA_6...

  • 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_D I-769P-EPA_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. REV_D I-769P-EPA_8...

  • 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_D I-769P-EPA_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. REV_D I-769P-EPA_10...

  • 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_D I-769P-EPA_11...

  • Page 14: Placing The System In Service

    3a. Confirm that the system has been depressurized. The gauges should indicate zero pressure. Open the diaphragm-charge-line ball valve. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-769P-EPA_12...
  • Page 15 Series 767 Electric/Pneumatic Actuator. If a Series 746-LPA Dry Accelerator is installed, make sure the accelerator is not flooded. Close the diaphragm-charge-line ball valve. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-769P-EPA_13...
  • Page 16 AMTA. 15. Open the manual pull station to bleed off any air that is present. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-769P-EPA_14...
  • Page 17 19b. If pressure in the diaphragm charge line does not drop, re- open the diaphragm-charge-line ball valve, and proceed to the following step. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-769P-EPA_15...
  • Page 18 24. Open the water supply main control valve slowly until water flows 10-kPa/0.1 Bar leakage in 24 hours. steadily from the open 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_D I-769P-EPA_16...
  • Page 19 27. If water is flowing from the drip check, close the water supply main control valve, and start over at step 1. Refer to the “Troubleshooting” section. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-769P-EPA_17...

  • Page 20: External Inspection

    If the air chamber’s pres- sure 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. REV_D I-769P-EPA_18...

  • Page 21: Required Tests

    While the water supply main drain valve is fully open, record the water supply pressure (from the water supply gauge) as the r esidual pressure. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-769P-EPA_19...
  • Page 22 Isolation Ball Valve for Series 746-LPA Dry Accelerator (if Open applicable) 1/4-Turn Vent Ball Valve for Series 746-LPA Dry Accelerator (if Closed applicable) www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-769P-EPA_20...

  • Page 23: Water Flow Alarm Test

    Push in the plunger of the drip check to verify that there is no pressure in the alarm line. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-769P-EPA_21...

  • Page 24: Water Level And Low Air Alarm Tests

    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_D I-769P-EPA_22...
  • Page 25 “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. REV_D I-769P-EPA_23...
  • Page 26 Failure to follow this instruction could result in property damage. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-769P-EPA_24...
  • Page 27 18. Confirm that all valves are in their normal operating positions (refer to the table on this page). www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-769P-EPA_25...

  • Page 28: Required Operational (Trip) Tests

    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_D I-769P-EPA_26...
  • Page 29 15. Perform all steps in the “Placing the System in Service” section. Control Valve 11. 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. REV_D I-769P-EPA_27...

  • Page 30: Full Operational (Trip) Test

    10. 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_D I-769P-EPA_28...

  • Page 31: Required Internal Inspection

    15. Close the system main drain valve. 16. 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. REV_D I-769P-EPA_29...
  • Page 32 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_D I-769P-EPA_30...
  • Page 33 18. Place the system back in service by following the “Placing the System in Service” section. 13. Push the latch back (toward the diaphragm). www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-769P-EPA_31...

  • Page 34: Maintenance

    Use only Victaulic-supplied replacement parts. Failure to follow this instruction could cause improper valve operation, resulting in property damage. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-769P-EPA_32...
  • Page 35 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. REV_D I-769P-EPA_33...

  • Page 36: Removing And Replacing The Clapper Assembly

    Keep the clapper spring for re-installation. 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_D I-769P-EPA_34...
  • Page 37 12. Place the system back in service by following the “Placing the 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. REV_D I-769P-EPA_35...

  • Page 38: Installing The Cover Plate Gasket And Cover Plate

    DO NOT over-tighten the cover plate bolts. Failure to follow this instruction could cause damage to the cover plate gasket, resulting in valve leakage. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-769P-EPA_36...

  • Page 39: Removing And Replacing The Diaphragm Assembly

    Failure to follow this instruction could cause damage to the diaphragm, resulting in improper valve operation and valve Remove the diaphragm from the valve body. leakage. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-769P-EPA_37...

  • Page 40: Replacing The Strainer Screen For Series 767 Electric/Pneumatic Actuators

    ATTEMPTING TO PLACE THE SYSTEM BACK IN SERVICE. 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_D I-769P-EPA_38...

  • Page 41: Troubleshooting - Series 767 Electric/Pneumatic 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. REV_D I-769P-EPA_39...
  • Page 44 Series 767 Electric/Pneumatic Actuator SERIES 769 (DOUBLE-INTERLOCKED, ELECTRIC/PNEUMATIC RELEASE) WCAS-7EFFHK For complete contact information, visit www.victaulic.com I-769P-EPA 4258 REV D UPDATED 05/2008 Z000769767 VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-769P-EPA...

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