Water Buildup in Pneumatic System?

[Kevin Thorp]

Originally Posted by apples000

On the topic of valves sticking, we stored our all of our old robots in a shed with the valves on them, and we've only been able to get about half working by taking them apart and cleaning them out.

There are some tiny parts in a solenoid valve. I hope you were very careful about cleaning them, just as though you were working in an operating room (maybe surgical masks are overkill). Perhaps a very light film of air tool oil would help.

Most solenoid valves have a manual override; maybe a tiny button to press or screwdriver slot to rotate. This can help determine if the problem is electrical or with the valve spool.

Solenoid valves have a minimum operating pressure. Did you check that? Some are 24V. If you send 12V to a 24V coil you might see the LED light up but the valve wont work. This has frustrated many teams until they checked their valve specs.