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March 28, 2013 0 <br />Dry 120, <br />1 DRY VALVE <br />NAUNIG <br />TECHNICAL DATA <br />MODEL F-1 <br />_ <br />The Viking Corporation, 210 N Industrial Park Drive. Hastings MI 49058 <br />Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818.1680 Email: techsvcs@vikingcorp.com <br />c. Replace and tighten hex -head screw (17). DO NOT over -tighten. <br />9. To Remove Clapper Assembly (5), <br />a. While holding spring loaded clapper arm assembly (8) down, remove a retaining ring (7) from one end of the clapper <br />rod (6a). <br />b. Release the spring -loaded clapper arm assembly (8) and allow it to latch in the open position, <br />c. Slide the rod (6a) out of the clapper arm assembly (8) to free the clapper assembly (5). <br />d. Remove the clapper assembly (5) for inspection or replacement. <br />10. To Re -install Clapper Assembly (5). <br />a. Reverse disassembly procedures a through d in step 9above. <br />11. To Remove the Latch (2): <br />a. Remove the %' NPT pipe plug (4) (outside of the valve) to expose the latch pin (3). <br />b. While holding the latch (2) with one hand, remove the latch pir (3). <br />c. Remove the latch (2). <br />12. To Re -install the Latch (2) and Latch Pin (3). reverse disassembly procedures a through c in step 11 above. <br />The internal member assembly of the dry valve consists of sever at sub -assemblies. To service these sr,S-assemblies, it is necessary <br />to disassemble the dry valve. <br />13, To Disassr!mble The Dry Valve: <br />a. Disconnect the trim and remove the valve from the system piping. <br />b. Use dry valve reset barhvrench, part number 02977BM, to remove hand -hole cover bolts (21) from the base (22) <br />c. Remove the housing (1) from the base (22). Member assembly components (5-15), and (17-19. 21, 25) are accessible for <br />replacement <br />d. When inspection and/or replacement of member assembly components is complete, re -assemble the dry valve. <br />14. To Re -assemble the Dry Valve <br />a. Reverse disassembly procedures a through c in step 13 above. <br />b. The socket -set screw (23) will need adjustment. After the valve has been completely reassembled, latch the clapper in <br />place. With a 1l4' (6.35 mm) Allen wrench, turn the screw clockwise until it contacts the hook assembly (15). Then, turn <br />the screw one complete turn counter -clockwise. Set the system and trip test the valve to verity proper operation of the <br />valve <br />15. To Remove the Hook Assembly (15)� <br />a. Remove a retaining ring (7) from one end of the hook rod (6b). <br />b. Slide the rod (6b) out of the bushings in the air plate assembly (11) to free the hook assembly (15). <br />c. Remove the hook assembly (15). <br />16. To Re -install the Hook Assembly (15): <br />a Reverse the disassembly procedures a through c in step 15 above <br />17. To Remove the Clapper Arm Assembly (8) and Spring (9): <br />a. Remove a retaining ring (7) from one end of the clapper arm rod (10). <br />b. Slide the clapper arm rod (10) out of the bushings in the air plate assembly (11) to free the clapper arm assembly (8). <br />taking care to retrieve the spring (9). <br />c. Remove the clapper arm assembly (8), and spring (9). <br />18. To Re -install the Clapper Arm Assembly (8) <br />a. Reverse disassembly procedures a through c in step 17 above. <br />19 To remove the Diaphragm (12) and Diaphragm Retainer (13): <br />a. " ^ , 9116' wrench to remove the hex -head screws (14). <br />b. yve the diaphragm retainer (13) and diaphragm (12) for replacement If the diaphragm rubber shows signs of wear, <br />sucn as cracking or cuts, replace the rubber diaphragm. <br />20. To Re -install the Diaphragm (12) and Diaphragm Retainer (13): <br />a. Reverse disassembly procedures a and b in step 19 above. <br />b. When re -installing the diaphragm retainer (13), cross tighten hex -head screws (14) to 20 ft. lbs. of torque for even com- <br />pression of the diaphragm (12). <br />c. When assembling the base (22) to the housing (1): <br />i. Invert the housing (1) on a work bench so the holes for the hand -hole cover bolts (21) are facing up. <br />ii. Position the complete member sub -assembly (5-15 8 17-19, 21, 25) with the screw holes in the diaphragm (12), <br />aligned with the screw hales in the inverted housing (1). Use care to align the screw holes so the hook assembly <br />(15) properly aligns with the set screw (23). <br />iii. Position the base (22) over the inverted housing (1) with the member assembly (5-15 8 17-19, 21, 25). Align the <br />screw holes so the %i' (15 mm) NPT trim connection in the base (22) aligns with the 'A" (15 mm) NPT trim con nec- <br />_:o31 <br />