Originally Posted by ricfr
not sure if this posted .try again. I don't see any valves under the sink where the tank is located. just red and blue lines going in the tank.
As an alternate method. can i drain all the tanks and blow out the lines with air pressure safely?
The lines, yes!
The tank, I doubt it, my best guess is if you put enough air to the tank to blow all the water out you might blow out a wall or something just as expensive to replace.
And the price of the rig has nothing to do with installed accessories.
Fact is they may not have put it in figuring you would not do it yourself.
Have you seen the low point drains under it?
Or it might have a valve on it.