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TFP171 Page 7 of 10 SPRINKLER FINISH K TYPE NATURAL CHROME SIGNAL LEAD FACTOR BRASS PLATED WHITE COATED PENDENT(TY1231) and UPRIGHT(TY1131) 2.8 175 PSI(12,1 BAR) N/A 1/2"NPT RECESSED PENDENT(TY1231) PENDENT(TY2231) and 4.2 UPRIGHT(TY2131) 175 PSI(12,1 BAR) N/A 1/2"NPT RECESSED PENDENT(TY2231) PENDENT(TY3231) 175 PSI and (12,1 BAR) 5.6 UPRIGHT(TY3131) 25OR 1075 PSI17,2(12,1 BAR) 1/2"NPT RECESSED (SEE NOTE 1) PENDENT(TY3231) N/A PENDENT(TY4231) 175 PSI and (12,1 BAR) 8.0 UPRIGHT(TY4131) 3/4"NPT 175 PSI(12,1 BAR) RECESSED N/A PENDENT(TY4231) 8 0 PENDENT(TY4931) 175 PSI 1/2"NPT and 175 PSI(12,1 BAR) (12,1 BAR) UPRIGHT(TY4831) NOTES: 1. The maximum working pressure of 250 psi(17,2 bar)only applies to the Listing by Underwriters Laboratories Inc.(UL);the Listing by Underwriters Laboratories,Inc.for use in Canada(C-UL);and,the Approval by the City of New York. TABLE C MAXIMUM WORKING PRESSURE Care and corrosive products of combustion, but tion Service in accordance with local have not operated, should be replaced requirements and/or national codes. Maintenance if they cannot be completely cleaned Care must be exercised to avoid by wiping the sprinkler with a cloth or dam- The TYCO Series TY-FRB must be by brushing it with a soft bristle brush. age to the sprinklers -before, during, and after installation. Sprinklers dam- maintained and serviced in accordance Care must be exercised to avoid dam- aged by dropping, striking, wrench with this section. age to the sprinklers - before, during, twist/slippage, or the like, must be Before closing a fire protection system and after installation. Sprinklers dam- replaced. Also, replace any sprinkler main control valve for maintenance aged by dropping, striking, wrench that has a cracked bulb or that has lost work on the fire protection system twist/slippage, or the like, must be liquid from its bulb. (Ref. Installation that it controls, obtain permission to replaced. Also, replace any sprinkler Section). shut down the affected fire protection that has a cracked bulb or that has lost systems from the proper authorities liquid from its bulb. (Ref. Installation Initial and frequent visual inspections of and notify all personnel who may be Section.) random samples are recommended for for the corrosion-resistant sprinklers to verify affected by this action. The owner is responsible the integrity of the corrosion-resistant Absence of the outer piece of an inspection,testing,and maintenance of material of construction. Thereafter, escutcheon, which is used to cover their fire protection system and devices annual inspections per NFPA 25 should a clearance hole, can delay sprinkler in compliance with this document, as suffice. operation in a fire situation. well as with the applicable standards of the National Fire Protection Associa- Inspections of corrosion-resistant Sprinklers which are found to be leak- tion (e.g., NFPA 25), in addition to the sprinklers are recommended at close ing or exhibiting visible signs of corro- standards of any other authorities hav- range, instead of from the floor level sion must be replaced. ing jurisdiction. Contact the installing per NFPA. Inspection at close range Automatic sprinklers must never be contractor or sprinkler manufacturer can better determine the exact sprin painted, plated, coated, or other- regarding any questions. kler condition and the long-term integ wise altered after leavingthe factory. rity of the corrosion-resistant material, Y Automatic sprinkler systems are rec- which can be affected by the corrosive Modified sprinklers must be replaced. ommended to be inspected, tested, conditions present. Sprinklers that have been exposed to and maintained by a qualified Inspec-