In both of those cases, they had to be completly torn down, new filters, seats, orings, even had to replace the gauge line due to mud in it. On both of them, somehow, mud had been forced all the way to the filters, blocking the 1st stage. I have had 2 come into the shop with the complaint of the vibralert going off early, or all the time. My guess, and I stress guess, is that the 1st stage filter is very dirty, and or clogged. The vibralert only actuates with the higher pressure (250psi).
Now, the higher (250psi) pressure causes the vibralert to actuate. So, the low cylinder pressure causes the regulator to get high pressure. The air is moveing through the 2nd stage to the regulator at about 250psi. At about 1/4 of the bottle, the pressure on the transfer valve is such that it causes the transfer to actuate, and close the 1st stage valve, and open the 2nd stage valve. Air comming through the 1st stage is at 125psi to the regulator.Īs the cylinder is used, the pressure falls. Air is moving through the 1st stage to the reducer. Because the air is at high pressure, it causes the transfer valve to hold the 2nd stage closed. The air is supplied to the 1st stage, 2nd stage and the transver valve. Normal operation air comes from the cylinder to the reducer. Let me walk you through how the vibralert works when it works correctly, then I'll tell you what I think your problem is. Its always when I am stopped and the car shuts off, but when I take my foot off the break. For the last few months Ive had this random thing happen during an auto start/stop session. I know that sounds strange, but it is correct. This is only my second time to post so I apologize if Im putting this in the wrong place. First, we have to understand that the vibralert is activated by high pressure.