So, I watched this video (linked halfway into the video where he gets to business) on YouTube and got all excited about installing an auto-drain on a 60-gallon compressor I recently scored off Craigslist, a SpeedAire 60-gallon upright compressor which, typical of most sub-$2,000 compressors, uses a pressure switch to activate the motor.
The gist of what I'd like to accomplish:
Every time the compressor motor powers on to rebuild pressure in the air tank, I'd like the timing relay to open the solenoid for a period of about one second... That's it. Oh, and I want it all powered off the 3-wire 220v coming into the compressor, no secondary 110v outlet. There are plenty of kits of Amazon for doing this, but they all require secondary 110v power connection which also means the solenoid is operating all the time... Not just when the compressor is on. I will seldom use this compressor so I'd really like an auto-drain that only fires when I'm actually using it.
Here's the components I've ordered to make this work (all capable of running on 220v):
The solenoid has three wires, two red and one green/ground. I have one of those wires going to the always-powered side of the pressure switch, and the other red wire going to the timing relay. I've tried putting this wire in literally every other contact on this switch and it seems like the solenoid is simply not opening up for one second as I'd like.
Here's the wiring diagram for the timing relay:
Any idea what I might be doing wrong here? Thanks.
The gist of what I'd like to accomplish:
Every time the compressor motor powers on to rebuild pressure in the air tank, I'd like the timing relay to open the solenoid for a period of about one second... That's it. Oh, and I want it all powered off the 3-wire 220v coming into the compressor, no secondary 110v outlet. There are plenty of kits of Amazon for doing this, but they all require secondary 110v power connection which also means the solenoid is operating all the time... Not just when the compressor is on. I will seldom use this compressor so I'd really like an auto-drain that only fires when I'm actually using it.
Here's the components I've ordered to make this work (all capable of running on 220v):
- Solenoid Valve, Normally Closed, 1/4" NPT, 220/50V (Asco RED HAT model 8262H202 - spec sheet)
- Time Delay Relay, Power On Time Delay Relay, 0.2 to 5.0 seconds, DPDT (Omron H3Y-2 - spec sheet)
- Miscellaneous 1/4" NPT brass piping (elbow and nipple) for the drain assembly
The solenoid has three wires, two red and one green/ground. I have one of those wires going to the always-powered side of the pressure switch, and the other red wire going to the timing relay. I've tried putting this wire in literally every other contact on this switch and it seems like the solenoid is simply not opening up for one second as I'd like.
Here's the wiring diagram for the timing relay:
Any idea what I might be doing wrong here? Thanks.