Preaction System Technical Manual for Installation, Operation and Maintenance February 19, 2010 Form No.
February, 2010 Page II TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com Table of Contents I. SYSTEM DESCRIPTION II. SYSTEM TYPES AND APPLICATIONS A. Single Interlock Preaction System 1. Pneumatic Release 2. Hydraulic Release 3. Electric Release B. Double Interlock Preaction System 1. Electric/Pneumatic Release 2.
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Page 4 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
February, 2010 Page 5 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com Figure 2 NFPA 13 defines three basic types of preaction systems: • • • Single Interlocked: Admits water to sprinkler piping upon operation of detection devices only.
Page 6 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
February, 2010 Page 7 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
Page 8 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com II. S Y S T E M T Y P E S A ND APPLICATIONS Preaction systems are used in areas where a common wet pipe or dry pipe sprinkler system would present a greater potential of facility damage in the unlikely event of unintentional water discharge.
February, 2010 Page 9 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 8a: Single Interlock Preaction System with Pneumatic Release The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
Page 10 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 8b: Single Interlock Preaction System with Pneumatic Release - Priming Water in Set Position The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
February, 2010 Page 11 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 8c: Single Interlock Preaction System with Pneumatic Release - Priming Water After Pneumatic Actuator Opens The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
Page 12 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 9a: Single Interlock Preaction System with Hydraulic Release The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
February, 2010 Page 13 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 9b: Single Interlock Preaction System with Hydraulic Release - Priming Water in Set Position The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
Page 14 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 10a: Single Interlock Preaction System with Electric Release The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
February, 2010 Page 15 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 10b: Single Interlock Preaction System with Electric Release - Priming Water in Set Position The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
Page 16 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 10c: Single Interlock Preaction System with Electric Release - Priming Water After Solenoid Opens The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
February, 2010 Page 17 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com With the Model G-2000, G-3000, or G-4000 Valve: When the detector operates, the solenoid valve opens (Figure 10d). Prime water is drained from the prime chamber, causing the G series valve to open, filling the sprinkler piping with water.
Page 18 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com B. Double-Interlocked Preaction System (Figures 11a-13c) This system is commonly used in freezers where flooding of the pipe can have serious consequences.
February, 2010 Page 19 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 11a: Double Interlock Preaction System with Electric/Pneumatic Release The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
Page 20 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 11b: Double Interlock Preaction System with Electric/Pnematic Releaes - Priming Water in Set Position The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
February, 2010 Page 21 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 11c: Double Interlock Preaction System with Electric/Pneumatic Release - Priming Water After Solenoid and Pneumatic Actuator Open The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
Page 22 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 12a: Double Interlock Preaction System with Pneumatic/Pneumatic Release The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
February, 2010 Page 23 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 12b: Double Interlock Preaction System with Pneumatic/Pneumatic Release - Priming Water in Set Position The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
Page 24 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 12c: Double Interlock Preaction System with Pneumatic/Pneumatic Release - Priming Water After Releases Have Activated The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
February, 2010 Page 25 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 13a: Double Interlock Preaction System with Electric/Pneu-Lectric Release The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
Page 26 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 13b: Double Interlock Preaction System with Electric/Pneu-Lectric Release - Priming Water in Set Position The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
February, 2010 Page 27 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 13c: Double Interlock Preaction System with Electric/Pneu-Lectric Release - Priming Water After Solenoid Opens The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
Page 28 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com C. Non-Interlock Preaction System (Figures 14a-15c) The non-interlock preaction system utilizes a Viking deluge valve, which may be opened either by the fusing of a sprinkler in the sprinkler piping or by the operation of the detection system.
February, 2010 Page 29 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 14a: Non-Interlock Preaction System with Electric Release The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
Page 30 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 14b: Non-Interlock Preaction System with Electric Release - Priming Water in Set Position The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
February, 2010 Page 31 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 14c: Non-Interlock Preaction System with Electric Release - Priming Water After Solenoid or Pneumatic Actuator Open The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
Page 32 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 15a: Non-Interlock Preaction System with Pneumatic Release The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
February, 2010 Page 33 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 15b: Non-Interlock Preaction System with Pneumatic Release - Priming Water in Set Position The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
Page 34 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 15c: Non-Interlock Preaction System with Pneumatic Release - Priming Water After Pneumatic Actuator Has Opened The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
February, 2010 Page 35 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com D. TRIMPAC® Figure 16: Viking Trimpac® Viking’s Trimpac® is a factory assembled trim package including a specific release device for a single or double interlocked preaction system, with the standard trim contained in a single cabinet (Figure 16).
Page 36 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com Trimpac® can be utilized for systems regardless of valve size. A valve drain package is required for the deluge/flow control valve and is ordered based on valve size.
February, 2010 Page 37 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
Page 38 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
February, 2010 Page 39 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com In fire conditions, when the detection system operates, the VFR400 Control Panel activates the system alarm and initiates the appropriate detection alarms. No water enters the system piping at this time.
Page 40 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
February, 2010 Page 41 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com III. SYSTEM REQUIREMENTS Section 7.3 of NFPA 13† provides the installation rules and characteristics that are unique to preaction systems. Also, refer to NFPA 72 National Fire Alarm Code for specific requirements on the design of electrical detection systems.
Page 42 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com TABLE 2: RECOMMENDED PNEUMATIC SUPERVISORY PRESSURES AND SETTINGS FOR VIKING DOUBLE INTERLOCK PREACTION SYSTEMS WITH ELECTRIC/PNEU-LECTRIC RELEASE (FOR SYSTEMS USING A MODEL E OR F SERIES DELUGE VALVE) Device For Supervisory Pressure of 30 PSI (2.
February, 2010 Page 43 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com Figure 20a: Preaction System with Pilot Line Loss of Air Activates General Alarm NOTE: Section 6.9.2.
Page 44 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 20b: Preaction System with Electric Detection Activates General Alarm The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
February, 2010 Page 45 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 20c: Preaction System with Electric Detection - Emergency Release The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
Page 46 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com Releasing devices, including automatic sprinklers used as releasing devices, are listed with specific spacing requirements that must be followed.
February, 2010 Page 47 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com The force pulling on the lever arm depresses a schrader valve stem, sending the pressure above the diaphragm faster than it can be replenished through the small hole in the diaphragm (Figure 23).
Page 48 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com Device Compatibility All components of pneumatic, hydraulic, or electrical systems shall be compatible to ensure that all system components function as an integrated unit.
February, 2010 Page 49 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
Page 50 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com Pressure to be Maintained in a Pneumatic Release System: For recommended pneumatic (air or nitrogen) pressures to be maintained in pneumatic release systems, refer to current Viking technical data for the system used.
February, 2010 Page 51 TECHNICAL DATA PREACTION SPRINKLER SYSTEM Figure 32: Release Line Dehydrator (Shown with a Model F-1 Deluge Valve and Trim) The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
Page 52 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.
February, 2010 Page 53 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com Location of Release and Pressure Switch: The location of the solenoid valve is shown on the various system data sheets. Flow through the release must be in the direction indicated. The pressure switch in the release control unit system is located in the alarm line.
Page 54 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com Figure 36 Water Control Valves Section 7.3.1.2 of NFPA 13† requires the automatic water control valve to be provided with hydraulic, pneumatic, or mechanical manual means for operation that is independent of detection devices and of the sprinklers (Figure 36).
February, 2010 Page 55 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com Auxiliary Drains Section 8.16.2.5.3 of NFPA 13† requires auxiliary drains where a change in piping direction prevents drainage of system piping through the main drain valve. Where the capacity of trapped sections of pipe is less than 5 gal (18.
Page 56 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com A. Quarterly Water Flow Alarm Test Quarterly testing of water flow alarms and performance of a main drain test is recommended and may be required by the Authority Having Jurisdiction. 1.
February, 2010 Page 57 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com 3. Close the flow test valve. 4. Trip the system by operating the release system. Allow a full flow to pass through the deluge valve. Water flow alarms should operate. 5. When test is complete: a. b. c. d. Close the main water supply control valve.
Page 58 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com Halar® Coating Repair If the Halar® coating becomes chipped, immediately repair the damaged area to inhibit the potential for corrosion. Follow instructions below: 1. Wipe clean and prepare the area to be repaired as instructed. 2.
February, 2010 Page 59 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com NOTE: THE SPACER’S OUTSIDE DIAMETER IS TAPERED. THE DIAMETER OF THE BOTTOM IS GREATER THAN THE DIAMETER OF THE TOP. b. Align bolt holes and tighten screws. 4. Place the cover, with cap screws inserted in the holes, upside down on a work bench. 5.
Page 60 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com e. Close the water supply control valve. 9. To remove / replace the prime coupling (Figures 46-47): a. b. c. d. Remove the 1/4” socket set screw and nylon ball (for the Model G-4000P Valve only). Open the 1/2” union on the prime line.
February, 2010 Page 61 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com 3. Open all auxiliary drain valves and inspectors test valve. 4. Silence alarms (optional). To silence electric alarms controlled by pressure switch and to silence water motor alarm, close alarm shut-off valve.
Page 62 February, 2010 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com B.
February, 2010 Page 63 TECHNICAL DATA PREACTION SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com 5. The hole through the diaphragm at the discharge end of the PORV is plugged. The PORV must be disassembled and the diaphragm checked for obstructions in the diaphragm hole, by bending the diaphragm back and fourth at the location of the hole.
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