The instrument seems to be in working condition but I would like to replace the auto sampler with a simple manual injector. This way it should not require N2 gas to operate the auto injector. A Manual would be a great help.
If you message me with your email address, then I can send you a PDF copy of the "user manual", but you will be very disappointed. The manual is nearly worthless.
Adding a manual injection valve to the system is easy if you are experienced with proper chromatography plumbing principles. Use a Rheodyne 7125 std valve and plumb it directly into the flow path (under the top cover plates) after the pump outlet and before the column compartment union. You can bypass the entire A/I in this way.