New homeowner in the winterize zone, I have a Febco 765 BFP and 7 zone sprinkler system, followed all the steps from the available information source on the web and Home Depot for prep steps. shut off the supply valve, turn of the control box, opened the ball valve on the test cock, etc. Hooked up a 2.5hp 21 gallon compressor with 40-60psi output to each zone at a time, manually turned the valve to start the each zone, not the control box. no water blowing out, only some noise from the BFP. coul...
