2702 HOYT AVE 2018-01-02 MF Import

L sir L- - March 28, 2013 DRY VALVE MODEL F-1 The Viking Corporation, 210 N Industrial Park Driie, Hastings MI 4905E Telephone: 269-945.9501 Techn'cal Services: 877.384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com lion in the housing (1). iv. Install the hand -hole cover bolts (21) finger tight only. v. Cross -tighten all hand -hole cover bolts (21), to 90 ft. Ibs of torque to evenly compress the diaphragm (12) and maintain proper alignment of the member sub -assembly (5-15 8 17-19, 21. 25). 7. AVAILABILITY The Viking Model F-1 Dry Pipe Valve is available through a network of domestic and intemational distributors. See the Viking Corp. Web site for closest distributor or contact The Viking Corporation. 8. GUARANTEES FL( details of warranty, refer to Viking's current list price schedule or contact Viking directly. Table 3 - Troubleshooting Guide Condition: Possible causes: Suggested action: Check the system for leaks and chr.,ck for proper air supply A Viking Air Mamlenance Device should be installed on each system equipped with Loss or art pressure in the system an automatic air supply Consider adding a maintenance air compres- The valve trips when no sprin. sor. kler has fused Increase the air pressure on the system The maximum limit is 60 P51 An extreme pressure surge in the (4.1 bar). Note: IaUeaSmg system pressure may increase trip time or water Supply the dry valve. Inspect and clean the water seat and clapper rubber (see paragraph 4-B Water leaking over the water seal Placing the Valve in Service). Consider replacing the clapper rubber If Water constantly passing into the intermediate chamber the water seat has been pitted or damaged by debris, it may be noes through the drip check when sary to replace the base assembly the valve is In the SET posi- - Alarm test valve in the bypass con. tion nection of the dry valve trim not tight- Verify that water is not getting past alarm lest valve. ly closed Inspect and clean the air seat and Uapper rubber (see paragraph 4-B Air leaking over the air seat into the Placing the Valve in Service). Consider replacing the clapper rubber. If Air constantly passing through intermediate chamber the air seal has been pitted or damaged by debris, it may be necessary the drip check when the valve to replace the air plate assembly. is in the SET position Air leaking past the rubber dia- Inspect the rubber diaphragm for deterioration. It necessary, replace the phragm diaphragm. Verity that the re -selling loot used Is smooth and of the proper strength and diameter' to provide the required force at the appropriate angle to cause the latching hook to slide over the clapper arm when setting the Incorrect resetting tool dry valve • The W :1 re -setting tool is a 3/4" (19 mm) diameter cold rolled stecl Clapper will not latch bar. chamfered at one end and a standard 15116" hex -socket on other end (PN 029778M). The hook not sliding on the re -setting File or grind the re -selling tool Remove any rough spots to provide a tool smootn sliding surface and proper clearance. Clapper rubber worn Replace the clapper rubber. Internal parts damaged by accidental Replace the valve member assembly application of high pressure Improper resetting procedure See paragraph 4-B Placing the Valve in Service. Inadequate air supply See paragraph 4-B Placing the Valve in Service. The valve latches but will not remain set Air pressure and priming water pass- Clean the air seat and the clapper rubber. Replace the clapper rubber, ing through the Intermediate sham- if worn ber and out of the drip check