Central fire sprinklers with O-ring seals — recall 01201

Reported risk: This replacement program includes two kinds of sprinklers, "wet" and "dry." "Wet" sprinklers are installed in piping that is filled with water. "Dry" sprinklers are used in areas that may be exposed to very cold temperatures and the exposed piping does not contain water. Central manufactured 33 million "wet" sprinklers with O-rings from 1989 until 2000 that are covered by this program. Central also manufactured 2 million "dry" sprinklers with O-rings from the mid-1970's to June 2001 that are covered by this program. The program also covers 167,000 sprinklers with O-rings manufactured by Gem Sprinkler Co. and Star Sprinkler Inc. from 1995 to 2001. A listing of all the models covered under this voluntary replacement follows: AFFECTED MODELS CENTRAL "WET" SPRINKLERS (Manufactured from 1989 to 2000) GB GB4-FR GB-R1 BB2 ELOC ELO-GB QR GB-J GB4-EC GB-RS BB3 ESLO LD GB-1 GB4-QREC GB-R SD1 ELO SW-20 K17-231 GB-ALPHA GB-20 ROC SD2 ELO SW-24 Ultra K17 GB4 GB-20 QR BB1 17/32 SD3 ESLO-20 GB ELO-16 GB GB-QR GB-LO BB2 17/32 HIP ELO-231 GB GB MULTI-LEVEL GBR-2 LF BB3 17/32 WS ELO-GB GB-QR MULTI-LEVEL GB-EC GBR BB1 ELO-LH ELO-231 GBQR ELO-16 GB FR CENTRAL "DRY" SPRINKLERS (Manufactured rom Mid-1970s to 2001) A-1 GB GB4-EC ELO-16 GB H-1 GB-QR GB4-QREC ELO-16 GB FR J GB4 ELO-231 GB K GB4-FR ELO-GB QR GEM "WET" SPRINKLERS (Sold under Gem name from 1995 to 2001) F927 STAR "DRY" SPRINKLERS (Manufactured from 1996 to 1998) ME-1 SG SG-QR Q Q-QR. The fire sprinkler heads have the words "CENTRAL" o Hazards: These sprinkler heads can corrode or minerals, salts and other contaminants in water can affect the rubber O-ring seals. These factors could cause the sprinkler heads not to activate in a fire.