When we pump up our pneumatics with the tubes in the correct places in the solenoid and the solenoid closed, the piston extends. when we open the solenoid it lets out all of the air in the tank. When we switch the tubes the solenoid lets out all of the air as we pump it. Can anyone explain this to us?
I would double check that you are properly connecting the solenoid valve to the pneumatic cylinder and to the air supply. It is unlikely, but possible, that the solenoid is not operating properly. The attached white paper may be helpful, in addition to the instruction provided by VEX. pneumatics information.pdf (313 KB)