Air Vent up High From: Sprinklerforum [mailto:[email protected]] On Behalf Of rongreenman . Sent: Thursday, July 21, 2016 1:15 PM To: [email protected] Subject: Resi Riser - Character set not allowed
Anyone experienced this before? The original CSC version of the Tyco rest riser in four inch. http://tyco-fire.com/index_link.php?link=TFP962&_ga=1.123267982.464632162.1469119864 Flow throw the IT port and you can watch the lever in the flow switch move and then, before alarming, move back to the static condition and essentially reset the diaphragm timing. Watch it long enough and listen to the flow and you can identify the flows changing the pitch suggesting turbulence. After a bit you can identify and the tones and know when the paddle will move (indicated by the lever) and when it will retreat back to what appears a low flow situation. The flow switch works fine when flowing the main drain but not throw the test orifice, although the technician asking me this question says it worked last year. All I can figure is there are lots of corners in solved and the flow keeps going from a laminar to turbulent pattern and the paddle resets during the turbulent period. It seems to me the flow switch and the test outlet are too close together but this is the only one of these I've ever seen this particular problem occur on and it is a listed device that's been around for a long time in both CSC and Tyco livery. I suggested the technician try the flow test again at a different time of day and see what happens. That won't correct the problem but if it works it suggests that the problem was due to a temporary condition (maybe repeating) of the water supply. Any other ideas? -- Ron Greenman 4110 Olson Dr., NW Gig Harbor, WA 98335 [email protected]<mailto:[email protected]> 253.576.9700 A problem well stated is a problem half solved. -Charles F. Kettering, inventor and engineer (1876-1958)
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