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Just a quick video on how to install, adjust, and test a Potter VSR waterflow switch. I'm sorry when I was installing the switch on the pipe I said 10ft-lb of torque, I meant to say 20ft-lb. I also said the switch should be installed 24" from an alarm valve, I got lost in thought but what I meant to say was the switch SHOULD be installed 24" from any valve (control valve, check valve, alarm valve, drain valve, etc). At the very end of the video I mentioned testing the flow switch that is already wired- ALWAYS CHECK VOLTAGE WITH A METER BEFORE REMOVING WIRES JUST IN CASE IT'S HOOKED UP TO A 120V ELECTRIC BELL. I'm actually going to remove this video tomorrow and edit this in as I really don't want anyone getting hurt because they didn't read this (my fault for not mentioning that in the video). 00:00- VSR flow switch specs/general installation good practice 02:38- Installing the VSR flow switch. Proper Hole size for drilling and pipe preoperation 10:25- Inside the VSR flow switch- how the switch works, and how to adjust the time delay 12:11- 2 pole switch (what does that mean?) 13:00- Is it acceptable to pull the lever inside the switch to test the switch?- NO 13:30- Installing a proper test connection for mechanically flow testing the VSR flow switch 15:22- Testing the VSR flow switch with a multimeter 16:33- How does the time delay work on the VSR flow switch? Testing the delay with a multimeter 19:12- Where would I install a VSR flow switch? 20:20- VSR flow switches on a Shotgun riser application 25:00- VSR flow switches on Large/High volume wet system applications 30:40- Testing the VSR flowswitch on an existing building that is already wired up to the fire alarm panel. 31:50- Checking existing wires for voltage