2702 HOYT AVE 2018-01-02 MF Import

March 28, 2013 VII� 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 bar/wrench, part number 02977BM 11. Close all auxiliary drains, the system test valve, and the priming water level test valve on the dry valve trim. The main drain (located on the inlet of the dry valve) should remain open. 12. If equipped with a Viking accelerator and external anti -flood device: a. Close the I/V (15 mm) anti -flood isolation valve. b. Observe the air pressure gauge on top of the accelerator. The gauge must read zero before the accelerator will automatically reset. It may be necessary to loosen, remove, and re -install (use the appropriate wrench) the air gauge to vent trapped air pressure from the upper chamber. 13. Open the dry system air supply and establish desired system pressure. See Table 3 for suggested air pressure to water pressure settings. NEVER EXCEED 60 PSI (4 1 bar) AIR PRESSURE Table 3 - Air Pressure Settings Maximum Water Pressure Minimum Maximum PSI I bar PSI bar PSI I bar 50 3,45 15 1.03 25 172 75 5.17 20 1.38 30 2.07 100 16.90 25 11.72 35 2.41 125 18.62 30 2.07 45 3.10 150 10.34 35 2.41 50 3.45 175 1: 45 3.10 60 4.14 14. Verify that the intermediate chamber of the dry valve is free of water. No water should flow from the drip check when the plunger is pushed. 15. If equipped with a Viking accelerator and external anti -flood device: When pressure on the accelerator air pressure gauge equals the system set pressure, OPEN and secure the Vz' (15 mm) anti -flood isolation valve 16. Slowly open the water supply main control valve. 17. When flow is developed from the main drain, CLOSE the main drain valve. 18. Fu!ly open the water supply main control valve. 19. Secure all valves in their normal operating position. 20 Notify Authorities Having Jurisdiction and those in the affected area that the system is in service. 5. OPERATION (Refer to Figure 3) The clapper (5) and air plate (11) assemblies combine to form a floating member assembly. With the clapper assembly (5) latched closed, system air pressure forces the member assembly down, sealing the water seat (16) from the intermediate chamber. When a sprinkler operates, the system air pressure is reduced. When system air pressure is reduced to the differential tripping point of the valve, water supply pressure in the inlet chamber lifts the member assembly off the water seat (16) and flows into the intermediate ch,;Mhpr. As the member assembly continues to rise, the hook assembly 115) is forced against socket set screw (23), which causes the hook assembly (15) to pivot on hook rod (6b) and unlatch the clapper The dapper is spring loaded and swings to a full -open locked position (se: Figure 2-A). When using the optional accelerator, the accelerator senses the system air pressure drop and trips. Upon tripping, the accelerator allows the system air pressure to enter the dry valve intermediate chamber This immediately destroys the differential causing the member assembly to rise faster. The intermediate chamber is normally at atmospheric pressure and is connected to the alarm line. When the valve trips, the interme- diate chamber and alarm line are pressurized with system water pressure, activating alarms connected to the dry valve trim. 6. INSPECTIONS, TESTS AND MAINTENANCE NOTICE: THE OWNER IS RESPONSIBLE FOR MAINTAINING THE FIRE PROTECTION SYSTEM AND DEVICES IN PROPER OPERATING CONDITION. The Viking Model F-1 Dry Valve and trim must be kept free of foreign matter, freezing conditions, corrosive atmospheres, contami- nated water supplies, and any condition that could impair its operation or damage the device. It is imperative that the system be inspected and tested on a regular basis. The frequency of the inspections may vary due to con- taminated water supplies, corrosive water supplies, corrosive atmospheres, as well as the condition of the air supply to the system. For minimum maintenance and inspection requirements, refer to NFPA 25. In addition, the Authority Having Jurisdiction may have additional maintenance, testing, and inspection requirements that must be followed. WARNING: ANY SYSTEM MAINTENANCE WHICH INVOLVES PLACING A CONTROL VALVE OR DETECTION SYSTEM OUT OF SERVICE MAY ELIMINATE THE FIRE PROTECTION CAPABILITIES OF THAT SYSTEM. PRIOR TO PROCEEDING, NOTIFY ALL AUTHORITIES HAVING JURISDICTION. CONSIDERATION SHOULD BE GIVEN TO EMPLOYMENT OF A FIRE PATROL IN THE AFFECTED AREAS. I. INSPECTION Weekly inspection is recommended If the system is equipped with a low air (or nitrogen) alarm, monthly inspections may be adequate. 1. Check pressure gauges located on the supply side and system side of the dry valve. Verity that the proper ratio of air (or nitrogen) pressure to water supply pressure is being maintained (refer to Table 3).