I recently bought and installed this moisture filter system - https://www.ebay.com/itm/Arrow-Pneum...53.m2749.l2649
The filters all have drains installed on the bowls. The "manual" lists them as overnight drains. For the life of me, I cannot figure out how they work. I cannot figure out a way to manually trigger the drain action, and the only way I've figured out how to activate the auto drain feature is to shut off the air with the ball valve, then empty the remaining air in the lines. Once the air lines are empty, the drains open up and water drips out. Is this really how this type of system is supposed to operate? We typically just turn off the power to the compressor overnight and I'm worried that we're not going to be able to remember to drain the air lines on top of that.