I have an Ingersoll-Rand recirprocating type two stage compressor. We need to convert to a Low Pressure type compressor. I do not have any information or manuals related to this unit. As we want to convert this Compressor Model H50 to a L50 compressor. I would like to have a operation & maintainence manual, parts manual, and a workshop (Service) manual. Could you please help. Regards. Eddy Maung Maung.