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Victaulic FireLock 758-EPA Series Installation, Maintenance, & Testing Manual

Preaction valve with series 79n electric/pneumatic actuator double-interlock electric/pneumatic release
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Installation, Maintenance, & Testing Manual
Series 758-EPA
™
FireLock
Preaction Valve
with Series 79N
Electric/Pneumatic Actuator
Double-Interlock Electric/Pneumatic Release
Hang these instructions on the
installed valve for easy future reference.
Failure to follow instructions and warnings can result in serious personal injury, property damage, and/or product failure.
• Read and understand all installation instructions before attempting to install any Victaulic piping products.
• Wear safety glasses, hardhat, and foot protection.
If you need additional copies of any literature, or if you have any questions about the safe installation and operation of this product,
contact Victaulic Company, P.O. Box 31, Easton, PA 18044-0031, USA, Telephone: 1-800-PICK VIC, e-mail: pickvic@victaulic.com.
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Summary of Contents for Victaulic FireLock 758-EPA Series

  • Page 1 Failure to follow instructions and warnings can result in serious personal injury, property damage, and/or product failure. • Read and understand all installation instructions before attempting to install any Victaulic piping products. • Wear safety glasses, hardhat, and foot protection.

  • Page 2: Table Of Contents

    NOTICE The use of the word “NOTICE” identifies special instructions that are important but not related to hazards. ® Registered Trademark of Victaulic © Copyright 2002 Victaulic Printed in U.S.A.

  • Page 3: Installer Safety Instructions

    If you need additional copies of any literature, or if you have any questions about the safe installation and operation of this valve, contact Victaulic Company, P.O. Box 31, Easton, PA 18044-0031 USA, Telephone: 1-800-PICK Vic, e-mail: pickvic@victaulic.com. • Depressurize and drain piping systems before attempting to install or remove any Victaulic piping products.

  • Page 4: Introduction

    INTRODUCTION The following instructions are a guide for proper installation of Victaulic Series 758 Preaction Valves. These instructions involve pipe that is properly prepared and grooved in accordance with current Victaulic specifications. TRIM DIMENSIONS NOTE: The drawings below show a 4-inch (100-mm) configuration.

  • Page 5: Exploded View Drawing - Trim Components

    EXPLODED VIEW DRAWING – TRIM COMPONENTS Series 758 Actuated Valve With Double-Interlock, Pneumatic/Electric Release - Preaction Trim (Optional Accessories Also Shown) WATER MOTOR ALARM SERIES 760 LISTED U L C Drain Drip Cup Atmosphere Drip Cup Drip Cup To Upper Alarm Outlet Drip Cup Drain...

  • Page 6: Exploded View Drawing - Internal Valve Components

    EXPLODED VIEW DRAWING – INTERNAL VALVE COMPONENTS Piston Clapper Assembly Latch Alarm Seal Outlet "WEEP" Hole Alarm (Deluge and Preaction Valves) Test Seat Exaggerated for Clarity NOTE: Valve is in the set position. BILL OF MATERIALS 1 Valve Body 8 Bolt Seal 15 Cover Plate Bolts (Qty.

  • Page 7: Section View Drawing And Description - 79N Electric/Pneumatic Actuator

    SECTION VIEW DRAWING AND DESCRIPTION – SERIES 79N ELECTRIC/PNEUMATIC ACTUATOR The Series 79N Electric/Pneumatic Actuator is a single- Since the area of the lower diaphragm is greater than the unit device used in the actuation of Series 758 Preaction area of the lower chamber, the lower chamber seals; Valves with double-interlock electric/pneumatic trim.

  • Page 8: Section View Drawing And Description - Series 746 Dry Accelerator

    SECTION VIEW DRAWING AND DESCRIPTION – SERIES 746 DRY ACCELERATOR The Series 746 Dry Accelerator exhausts air from the actuator to speed the operation of the valve. A diaphragm separates the Series 746 Dry Accelerator into two chambers. The closing chamber contains a compression spring, which maintains this chamber in the closed position.

  • Page 9: Compressor And Air Maintenance Trim Requirements

    5 psi (34 kPa) above the set point of the regulator. 4) The Victaulic air regulator is a relief-type design. Any pressure in the system that is above the set point of the regulator will be released.

  • Page 10: Proper Air Supplies For Series 758 Preaction Valves Used With Series 79N Electric/Pneumatic Actuators

    7. Air supplies must be regulated, restricted, and continu- Actuator, it is not necessary to use the air maintenance ous. NOTE: Victaulic recommends the use of an air main- trim assembly with the air regulator. In this case, the air- tenance device on any system with an automatic air line of the compressor connects to the trim at the fitting...

  • Page 11: Valve/Trim Installation

    5. Install valve, trim, and accessories per applicable trim drawings. The Victaulic Series 758 Preaction Valve is manufactured and listed for a maximum working pressure of 300 psi (2065 kPa) and is factory tested to 600 psi (4135 kPa). The...

  • Page 12: Placing The System In Service

    Accelerator PLACING THE SYSTEM Isolation IN SERVICE Ball Valve • Make sure the Series 758 Preaction Valve is properly heated and protected from freezing temperatures and physical damage. Failure to follow this instruction could cause improper valve operation, resulting in serious personal injury and/or property damage.
  • Page 13 Fast-Fill Auto Drain Ball Valve Knob 6a. Pull up on the auto drain knob, and confirm that water 8. Charge the system with air by turning on the compres- is flowing through the Series 79N. sor or by opening the fast-fill ball valve on the air mainte- nance device (fast-fill ball valve is shown above).
  • Page 14 Slow-Fill Auto Vent Ball Valve Knob 8d. When the system reaches approximately 8 psi (55 9. Open the slow-fill ball valve on the air maintenance kPa), pull up on the Series 79N auto vent knob. NOTE: device. The auto vent should seal and remain in the "UP" posi- tion.
  • Page 15 Auto Drain Knob Accelerator ¹⁄₄-turn Vent Ball Valve 14. If a Series 746 Dry Accelerator is used, open the ¹⁄₄- 12. Pull up on the auto drain knob until it is set in the “UP” position. Verify that there is pressure on the piston gauge. turn vent ball valve on the accelerator.
  • Page 16 Alarm Line Ball Valve Water Supply Main Drain Valve 19. When a steady flow of water occurs, close the water 16. Confirm that the alarm line ball valve is open. supply main drain valve. Water Supply Main Drain Valve Drip Check 17.
  • Page 17 Water Supply's Main Control Valve 21. Open the water supply’s main control valve fully. 22. Record the system air pressure and water supply pressure. 23. Ensure all valves are in their normal operating posi- tions (refer to table below). Normal Operating Valve Position Piston Charge Line Ball Valve...

  • Page 18: External Inspection

    • It is important that the system is inspected regularly, according to proper procedures. Failure to follow these instructions could result in serious personal • The Victaulic Series 758 Preaction Valve and trim must not be exposed to foreign injury and/or property damage. material, corrosive environments, freezing conditions, contaminated water supplies, or any other condition that could impair proper system operation.

  • Page 19: Water Flow Alarm Test

    14. Provide test results to the authority having jurisdic- tion, if required. Water Supply Water Flow Alarm Test Main Drain Valve Perform the water flow alarm test on a frequency required by the current NFPA-25 code. The authority having juris- diction in your area may require that you perform these tests on a more frequent basis.
  • Page 20 Alarm Line Alarm Drain Ball Valve Ball Valve 4. Close the alarm line ball valve. 7. Open the alarm drain ball valve, as shown above. 8. Verify that all alarms stopped sounding, that the alarm Alarm Test Ball Valve line drained properly, and that remote station alarms reset properly.

  • Page 21: Water Level And Low-Air Alarm Tests

    Alarm Line Accelerator Ball Valve Isolation Ball Valve 2. If the valve is equipped with a Series 746 Dry Accelera- 11. Open the alarm line ball valve. tor, close the isolation ball valve. Water Supply Main Drain Valve Drip Check 12.
  • Page 22 Fast-Fill Ball Valve Water Supply's Main Control Valve 5. Close the water supply’s main control valve. 9. Open the fast-fill ball valve on the air maintenance device. Bring the pressure back up to normal system pres- sure. Fast-Fill Ball Valve System Main Drain Valve 6.
  • Page 23 Water Supply Main Drain Valve Accelerator ¹⁄₄-turn Vent Ball Valve 10. If a Series 746 Dry Accelerator is used, open the ¹⁄₄- 11. Open the water supply main drain valve. turn vent ball valve on the accelerator. • Take precautions when opening the water supply main control valve, since water will flow from all open system valves.

  • Page 24: Trip Tests

    Partial trip tests are required to confirm proper valve oper- ation; however, this test does not confirm full system operation. Victaulic recommends that the partial trip test be performed annually. NOTE: The authority having juris- diction in your area may require that you perform this partial trip test on a more frequent basis.

  • Page 25: Full Trip Test

    8. Record the system air pressure when the valve actu- Full Trip Test ates. Victaulic recommends full trip testing every three years. 9. Confirm that the piston charge line pressure drops to This test allows a full flow of water into the sprinkler sys- zero and that water is flowing through the auto drain to...
  • Page 26 Water Supply Main Drain Valve Water Supply's Main Control Valve 3. Open the water supply main drain valve fully to flush 9. Close the water supply’s main control valve. the water supply of any contaminants. Piston Charge Line Ball Valve Water Supply Main Drain Valve...

  • Page 27: Required Internal Inspection

    • Depressurize and drain piping systems before attempting to disassemble any Victaulic piping products. 3. Close the water supply main drain valve. Failure to follow this instruction could result in serious personal injury, property damage, and/or product damage.
  • Page 28 Piston Charge Line • Make sure valve is depressurized and drained Ball Valve before removing cover plate bolts. The cover plate will blow off if these bolts are removed while the valve is pressurized, resulting in serious personal injury and/or property damage. 7.

  • Page 29: Maintenance

    It is important that care be taken to avoid damage to parts. • Depressurize and drain piping systems before attempting to disassemble any Victaulic piping products. Failure to follow this instruction could result in se- rious personal injury, property damage, and/or product damage.
  • Page 30 Smaller diameters of seal ring and clapper seal Larger diameter • DO NOT pry the seal washer out of the clapper seal from the inner hole. of clapper seal Failure to follow this instruction could damage the seal washer, resulting in improper is installed in clapper sealing and property damage.

  • Page 31: Removing And Replacing Clapper Assembly

    10. Place seal retaining ring onto seal washer of clapper seal. 2. Remove clapper shaft-retaining plugs from valve body. • Use only Victaulic-supplied replacement seal assembly bolt/bolt seal when reassembling clapper. Failure to follow this instruction could result in property damage and/or valve leak- age.

  • Page 32: Installing Cover Plate Gasket And Cover Plate

    Installing Cover Plate Gasket and Cover Plate 1. Verify cover plate gasket is in good condition. If gasket is torn or worn, replace with a new, Victaulic-supplied gasket. 8. Place other spacer between clapper and valve body, and finish inserting clapper shaft through clapper arm and valve body, as shown above.

  • Page 33: Removing And Replacing Piston Assembly

    3. Insert one cover bolt through cover plate and cover gas- ket to ease alignment. • Depressurize and drain piping systems before attempting to disassemble any Victaulic piping products. Failure to follow this instruction could result in serious personal injury, property damage, and/or product dam- age.

  • Page 34: Replacing The Strainer Screen For Series 79N Electric/Pneumatic Actuators

    26. 2. Remove the Series 79N Electric/Pneumatic Actuator from the trim. 5. Replace piston with a new, Victaulic-supplied assem- bly. Make sure o-ring is installed flush to piston body. • Make sure piston is reassembled and reinstalled correctly.

  • Page 35: Troubleshooting Series 79N Electric/Pneumatic Actuator

    No water pressure on piston. Check water pressure in piston charge line. Auto drain is not set. Set auto drain. Water leaking from piston assembly. Diaphragm is damaged. Contact Victaulic. Air leaking from piston assembly. Piston rod seal is damaged. Contact Victaulic.

  • Page 36: Warranty

    DAMAGES FOR LOST PROFITS, LOST SALES, INJURY TO PERSON OR PROPERTY OR ANY OTHER INCIDENTAL OR CON- SEQUENTIAL LOSS) SHALL BE AVAILABLE TO HIM. Victaulic neither assumes nor authorizes any person to assume for it any other liability in connection with the sale of such products.

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