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TFP151 Page 7of8 sprinkler. Readjust the position of the The Series TY -B Recessed Pendent and after installation. Sprinklers dam - sprinkler fitting to suit. Sprinklers must be installed in ac- aged by dropping, striking, wrench The Series TY -B Pendent and Up- cordance with the following instruc- twist/slippage, or the like, must be re- right Sprinklers must be installed in tions. placed. Also, replace any sprinkler accordance with the following instruc- Step A. After installing the Style 10 or that has a cracked bulb or that has lost tions. 40 Mounting Plate, as applicable, over liquid from its bulb. (Ref. Installation the sprinkler threads and with pipe Section). Step 1. Pendent sprinklers are to be thread sealant applied to the installed in the pendent position, and PP pipe Frequent visual inspections are rec- upright sprinklers are to be installed in threads, hand tighten the sprinkler into ommended to be initially performed for the upright position. the sprinkler fitting. corrosion resistant coated sprinklers, Step B. Tighten the sprinkler into the after the installation has been com Step 2. With pipe thread sealant ap- sprinkler fitting using o nly the W -Type pl eted, to verify the integrity of the cor- plied to the pipe threads, hand tighten 7 Recessed Sprinkler Wrench (Ref. rosion resistant coating. Thereafter, the sprinkler into the sprinkler fitting. annual inspections per NFPA 25 Figure 8). With reference to Figure 3 Step 3. Tighten the sprinkler into the or4, the W -Type 7 Recessed Sprinkler should suffice; however, instead of in- sprinkler fitting using only the W -Type Wrench is to be applied to the sprinkler specting from the floor level, a random 6 Sprinkler Wrench (Ref. Figure 7), wrench flats. sampling of close -up visual inspec- except that an 8 or 10 inch adjustable tions should be made, so as to better Crescent wrench is to be used for wax Step C. After the ceiling has been in- determine the exact sprinkler condi- coated sprinklers. With reference to stalled or the finish coat has been ap- tion and the long term integrity of the Figures 1, 2, 3, and 4 the W -Type 7 plied, slide on the Style 10 or 40 Clo- corrosion resistant coating, as it may Sprinkler Wrench or the adjustable sure over the Series TY -B Sprinkler be affected by the corrosive conditions Crescent wrench, as applicable is to and push the Closure over the Mount- present. be applied to the wrench flats. ing Plate until its flange comes in con- tact with the ceiling. The owner is responsible for the in- When installing wax coated sprinklers spection, testing, and maintenance of with the adjustable Crescent wrench, their fire protection system and de- additional care needs to be exercised Care and vices in compliance with this docu- to prevent damage to the wax coating ment, as well as with the applicable on the sprinkler wrench flats or frame Main t enance standards of the National Fire Protec- arms and, consequently, exposure of tion Association (e.g., NFPA 25), in bare metal to the corrosive environ- The Series TY -B Sprinklers must be addition to the standards of any other ment. The jaws of the wrench should maintained and serviced in accord- authorities having jurisdiction. The in- be opened sufficiently wide to pass ance with the following instructions: stalling contractor or sprinkler manu- over the wrench flats without damag- N OTES facturer should be contacted relative ing the wax coating. Before wrench to any questions. tightening the sprinkler, the jaws of the Before closing a fire protection system wrench are to be adjusted to just con- main control valve for maintenance Automatic sprinkler systems should be tact the sprinkler wrench flats. After work on the fire protection system that inspected, tested, and maintained by wrench tightening the sprinkler, loosen it controls, permission to shut down the a qualified Inspection Service in ac- the wrench jaws before removing the affected fire protection system must be cordance with local requirements wrench. obtained from the proper authorities and /or national codes. and all personnel who may be affected After installation, the sprinkler wrench by this action must be notified. flats and frame arms must be in- spected and the wax coating re- The owner must assure that the sprin- touched (repaired) whenever the coat- klers are not used for hanging of any ing has been damaged and bare metal objects; otherwise, non - operation in is exposed. The wax coating on the the eventofa fire or inadvertent opera - wrench flats can be retouched by gen- tion may result. tly applying a heated 1/8 inch diameter Absence of an escutcheon, which is steel rod to the areas of wax that have used to cover a clearance hole, may been damaged, to smooth it back over delay the time to sprinkler operation in areas where bare metal is exposed. a fire situation. NOTES Sprinklers that are found to be leaking Only retouching of the wax coating ap- or exhibiting visible signs of corrosion plied to the wrench flats and frame must be replaced. arms is permitted, and the retouching Automatic sprinklers must never be is to be performed only at the time of painted, plated, coated or otherwise the initial sprinkler installation. altered after leaving the factory. Modi- The steel rod should be heated only to fied sprinklers must be replaced. the point at which it can begin to melt Sprinklers that have been exposed to the wax, and appropriate precautions corrosive products of combustion, but need to be taken, when handling the have not operated, should be replaced heated rod, in order to prevent the if they cannot be completely cleaned installer from being burned. by wiping the sprinkler with a cloth or by brushing it with a soft bristle brush. Care must be exercised to avoid dam- age to the sprinklers - before, during,