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TFP171 <br />Page 9 of 10 <br />Sprinkler Finish <br />K- <br />Factor <br />Type <br />Natural <br />Brass <br />Chrome <br />Plated <br />polyester <br />Lead Coated <br />Pendent(TY1231) <br />and <br />2.8 <br />Upright (TY1131) <br />1/2 in. <br />175 psi (12,1 bar) <br />N/A2 <br />Recessed <br />NPT <br />Pendent(TY1231) <br />Pendent(TY2231) <br />and <br />4.2 <br />Upright (TY2131) <br />1/2 in. <br />175 psi (12,1 bar) <br />N/A <br />NPT <br />Recessed <br />rp <br />ndent(TY2231) <br />Pendent(TY3231) <br />and <br />5.6 <br />Upright (TY3131) <br />250 psi (17,2 bar) <br />1/2 in. <br />or 175 psi (12,1 bar)' <br />Recessed <br />NPT <br />Pendent(TY3231) <br />Pendent (TY4231) <br />175 psi <br />8.0 <br />and <br />Upright (TY4131) <br />(12,1 bar) <br />3/4 in. <br />175 psi (12,1 bar) <br />Recessed <br />N/A <br />NPT <br />Pendent(TY4231) <br />8.0 <br />Pendent (TY4931) <br />177 5 psi <br />1/2 in. <br />and <br />175 psi (12,1 bar) <br />(1 bar) <br />NPT <br />Upright (TY4831) <br />NOTES <br />1. Them eximum working pressure of250 psi (17,2 bar) only app l ies to the Listing by Underwriters Laboratories Inc (UQ the Listing by Under- <br />writers Laboratories, Inc. for use in Canada (C-UQ and the Approval by the City of New York <br />2. Not applicable (Ni <br />TABLE C <br />MAXIMUM WORKING PRESSURE <br />Care and <br />Maintenance <br />The TYCO Series TY-FRB 2.8, 4.2, 5.6, <br />and 8.0 K-factor Upright, Pendent, and <br />Recessed Pendent Sprinklers must be <br />maintained and serviced in accordance <br />with this section. Before closing a fire <br />protection system main control valve <br />for maintenance work on the fire pro- <br />tection system that it controls, obtain <br />permission to shut down the affected <br />fire protection systems from the proper <br />authorities and notify all personnel who <br />may be affected by this action. <br />Absence of the outer piece of an <br />escutcheon, which is used to cover <br />a clearance hole, can delay sprinkler <br />operation in a fire situation. <br />Sprinklers which are found to be <br />leaking or exhibiting visible signs of <br />corrosion must be replaced. <br />Automatic sprinklers must never be <br />painted, plated, coated, or other- <br />wise altered after leaving the factory. <br />Modified sprinklers must be replaced. <br />Sprinklers that have been exposed to <br />corrosive products of combustion, but <br />have not operated, should be replaced <br />if they cannot be completely cleaned <br />by wiping the sprinkler with a cloth or <br />by brushing it with a soft bristle brush. <br />Care must be taken to avoid damage <br />to the sprinklers before, during, and <br />after installation. Sprinklers damaged <br />by dropping, striking, wrench twist/ <br />slippage, orthe like, must be replaced. <br />Also, replace any sprinkler that has a <br />cracked bulb orthat has lost liquid from <br />its bulb. (Ref. Installation Section). <br />The owner is responsible for the <br />inspection, testing, and maintenance of <br />their fire protection system and devices <br />in compliance with this document, as <br />well as with the applicable standards <br />of the National Fire Protection Asso- <br />ciation (e.g., NFPA 25), in addition to <br />the standards of any other authorities <br />having jurisdiction. Contact the install- <br />ing contractor or sprinkler manufac- <br />turer regarding any questions. <br />Automatic sprinkler systems are rec- <br />ommended to be inspected, tested, <br />and maintained by a qualified Inspec- <br />tion Service in accordance with local <br />requirements and/or national codes <br />Care must be exercised to avoid <br />damage to the sprinklers before, <br />during, and after installation. Sprin- <br />klers damaged by dropping, striking, <br />wrench twist/slippage, or the like, must <br />be replaced. Also, replace any sprin- <br />kler that has a cracked bulb orthat has <br />lost liquid from its bulb. (Ref. Installa- <br />tion Section). <br />Initial and frequentvisual inspections of <br />random samples are recommended for <br />corrosion -resistant sprinklers to verify <br />the integrity of the corrosion -resistant <br />material of construction. Thereafter, <br />annual inspections per NFPA25 should <br />suffice. Inspections of corrosion -resis- <br />tant sprinklers are recommended at <br />close range, instead of from the floor <br />level per NFPA. Inspection at close <br />range can better determine the exact <br />sprinkler condition and the long-term <br />integrity of the corrosion -resistant <br />material, which can be affected by the <br />corrosive conditions present. <br />