Thanks to all of you for your suggestions. Waross, I had not thought of using a pressure switch. I'm sure that would work. I'm going to try repositioning quick-release valves. I wish I could put one in the middle of the run, but it's all buried. The boss wants to add a compressor near the...
If you have the genset for emergency backup, and have an automatic transfer switch, your transfer switch may be able to synchronize the genset with your mains and switch to generator power with barely a flicker of the lights. I wondered why the startup tech set our 400kw generator @ 60.1hz. The...
Thanks Scotty, Its the lines that supply the VFDs that run with the air hose through a bigger pvc conduit in the same trench. I added a separate 1" conduit thinking I might have to run some control wires eventually. The VFDs run on remote radio control and when I run them I can hear some...
Thanks Cranky. Mike, I tried a quick-release valve (two actually). This helps, but the valve doesn't dump the air from the control (supply) quickly enough. I'll try to post a schematic of the air circuit later, but a quick written description follows: air valve opens at receiver, sends pressure...
I could use a control relay to send 120volts to the valve, though I would have to change coils on the valve. I am concerned about voltage drop and about interference from the VFDs. I'm trying to decide what type of wire to pull given the length of the run and the fact that we may eventually want...
We have built an air actuated gate valve that needs to be controlled by a radio receiver located 800 feet away. The receiver puts out 12vdc. 460vac and 120vac are also available where receiver is. I designed an air operated control system which works OK to close the valve on application of...
