Acorn stairlift (Thurlstone S36)

Acorn stairlift. The rail is 4m long, but is in two pieces for transport. I was gifted this but it doesn’t fit our stairs. I do not know if it works or not. It’s been stored for a while so it will need a good clean. The model number label has been removed at some point so I’m not sure what model it is. There is no remote control.