water in air tanks

[davidbrady]

Last I checked the 120VAC aux compressor is plumbed to the AD9 air dryer input. If the desiccant, purge valve, and dryer are in good shape then the system can probably withstand a few cycles of the 120VAC compressor on humid days. It's probably a good idea to occasionally start the engine to let out a good burp from the air dryer.

For these reasons I always tried to minimize my use of the 120VAC air compressor. Try to keep your 12VDC Thomas compressor in good working order. Also, you can ditch the air operated Dupree valves in favor of electrically powered alternatives. My H3 uses electric dump valves. These make life a lot easier.

Humid air, debris, dust, and associated rust are definitely items you don't want in your air system. The resulting sludge and gunk will over time wreak havoc with valves and seals.