Heidelberg PM46

Heidelberg PM 46-2 year 2001
Having Problem with Pressure tank
Although all press functions are working and the pressure tank is full, the
compressor will not shut off. I opened the side panel and checked for leaks
didn't find any but air is coming out of this air fitting pictured.
I have the S24 cover switch off but can't determine what's wrong with it or
how to go about fixing the problem. Faulty switch maybe?

 

I don't have PM46-2 schematics, is it with CPTronics? usually in the pneumatics system, there is pressure sensor at feeder 15B14 (for CD102), which controls compressor. if air isn't leaky, possibly pressure sensor is defective.

 

you said you have S24 cover switch off, where is it located?

 

In the picture just to the left of the pencil (silver box with two springs showing).

 

please post more images about the image you post before from different angle, does S24 located at feeder OS side?

 

The valve pointed out in the pic was "clogged", (always open) so compressor wouldn't shut off so the sensors are ok,
called Stan at Intermountain Press service he gave me the sf to turn it on and off and cleared right out.
Also gave me instruction to take apart and clean. Problem solved.

 

good fix.
Thank you for feedback!