Ryobi 3302HA plates not clamping

[jorjh]

Hi, we have a Ryobi 3302HA press that we only use for 1 or 2 color prints. Two days ago, out of a sudden, when changing the plates, they don't clamp anymore, neither the leading edge or the tail edge. The plate cylinder spins as if loading the plate, and nothing. Has anyone encountered this before?

 

[jef]

plate clamps

Is your compressor to the press working?

 

[jorjh]

We emptied it out, and it started pulling in air as we started loading the plates, but no luck. We're gonna try checking all the hoses that go from the compressor into the press.