Shield - Sprinkler Water Motor Alarmshieldglobal.com/sprinkler_water_motor_alarm.pdf · 41 Shield -...
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Shield - Sprinkler Water Motor Alarm Fire F ighting & Building Service Products Shield/2005 Shield reserves the right to change the contents without notice.
Transcript of Shield - Sprinkler Water Motor Alarmshieldglobal.com/sprinkler_water_motor_alarm.pdf · 41 Shield -...
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Shield - Sprinkler Water Motor Alarm
Fire Fighting & Building Service Products
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Shield - Sprinkler Water Motor Alarm
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TYPE - A
INSTALLATION OF SPRINKLER ALARM Model GA MOUNTING TYPE - AThe Sprinkler Alarm with mounting Type-A is supplied pre-assembled. Connect the Alarm port of the Alarm valve or Deluge valve to the inlet ofthe sprinkler alarm assembly with 20NB pipe with proper support. A 20NB strainer is to be provided as close as possible to the Sprinkler Alarmassembly. Connect the 25NB drain pipe to the housing, taking due care that the drain discharge is running to a safe location and keep the drainfree from obstruction. A blocked drain discharge may create back pressure and prevent the Sprinkler Alarm from operating properly.The 20NB inlet and 25NB drain pipe should be properly supported with the help of the bracket so that in turn proper support is available for theSprinkler Alarm. The inlet and the drain pipe is to be preferably connected with an union for easy removal and re-fixing of the Sprinkler Alarm dur-ing maintenance. The Sprinkler Alarm must be installed in accordance with the requirement of NFPA, TAC or to the requirement of the local author-ity having jurisdiction.
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TYPE - B
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INSTALLATION OF SPRINKLER ALARMModel SD-GA MOUNTING TYPE SD-GB
1. Locate and cut a hole through the building wall toaccommodate a 20NB pipe with coupling (galvanised-pipe to be supplied by the installer). The required lengthof support pipe is equal to the thickness of the wallminus 20 millimetres. The pipe is to be threaded with thestandard 20NB pipe threading on the both ends to alength of 20 millimetres. Cut the drive shaft length, equalto the wall thickness plus40 millimetres.
2. Insert one end of the drive shaft (19) into the square holeprovided in the impeller (2) of the Sprinkler Alarm gongassembly. One end of 20NB support pipe is to bescrewed to the coupling (25) provided with the assemblyand the other end of the pipe is to be screwed to thehousing (1) of the Sprinkler Alarm motor assembly asshown in the figure. Position this assembly against thebuilding wall through a washer(24) with the support pipeextending through the wall.
3. Connect the alarm port of the Alarm Valve or DelugeValve to the inlet of the Sprinkler Alarm assembly with20NB pipe, with proper support. A 20NB strainer is to beprovided as close as possible to the Sprinkler Alarmassembly.
4. Move to the other side of the wall, place protection cover(6) on to the pipe coupling (screwed to thepipe) and holdagainst the wall. Insert the bush (5,assembly with driveshaft adaptor) in to the hole provided in the protectioncover and there by hand tighten the coupling extendingthrough the wall. Make sure that the drive shaft is prop-erly fitted inthe square hole of impeller and drive shaftadaptor. This can be ensured by rotating the drive shaftadaptor. The drive shaft adaptor should rotate withoutany binding while tightening the bush. If any binding isnoticed then unscrew the bush and refit. After ensuringthat the drive shaft is properly placed in the square holesat both ends, wrench tight the bush.
5. Place the gong over the gong post with washers as shownin the cross-sectional drawing and hand tighten the domenut, rotate the gong until the lettering is properly origi-nated. Wrench tighten the dome nut.
6. Connect the 25NB open drain pipe to the motor housing,taking due care that the drain discharge is running to asafe location and keep it free from obstruction.
TYPE - B
