It turns out my machine is perhaps ten years older than the one covered in the manual. Most of the mechanical functions are identical, however the controller for my vintage machine is a digital logic (TTL logic - date about 1982/1983) based system, whereas the manual describes a machine that uses a 6809 CPU and a LCD type of display. My machine has simpler LED displays that show just numeric values (Temperature, number of cycles, etc.).
A quick question for those of you with CPU controlled machines - have you backed up the EPROM? The EPROM is a 2764 and can be easily read and stored or copied as a backup - highly recommended!!!
I would like to find the manual on the earlier machine like what I have, but I suspect this is a bit of a wild goose chase. My serial number is P300 by the way - I wonder if that is for Prototype? That may be wishful thinking though on my part.
My next project will be to get this controlled by an Arduino like device so the parameters can be set more easily. The suggestion was raised that I use more than one injection stroke in order to make products of greater than 2 grams, this may not be too difficult to accomplish using the Arduino or other controller.
I do see that the schematics show a company named CIRRUS REYNOLDS LTD. drew up the schematics, and perhaps they designed the electronics. I will see if they still exist (don't seem to) and have records going back that far. I would prefer to interface my controller to the existing electronics rather than make everything more from scratch. Of course I first will test the device using the controller I have to see if it performs correctly and learn how to use it. Should be a bit of fun!