specs for Blanchard-Ness Dehumidifier

has anyone worked on or know where or how to get some info on a 20+ year old Blanchard-Ness Dehumidifier?? I can't find anything on the web. all I have is a model and serial without a name plate charge. (m- DA 5G) changing a leaking suction accumulator and would like to know specs for charge and/or at least subcooling..It's at a curling club..thanks

Started finding lots on the web for these but maybe not in your age group...
http://krack.ingersollrand.com/SiteC...BROC-KRACK.pdf

thanks, i'll look into that