Audio Desk vinyl cleaner disassembly

After my vinyl cleaner passed the 2-year mark, the water pump failed.  It was sent to Germany for repair and it costs a lot.  When it came back, one of the blower fans was not working, which means Audio Desk did not do a good job checking everything before shipping it back.

I will not send it back to Germany for repair and would like to try self repair.  But trying to disassemble the vinyl cleaner is a real challenge.  I remove the bottom rubber legs but cannot find any fasteners.  The front, back, and top covers are glued together, I think using PVC glue.

If anyone here have experience with the vinyl cleaner disassembly and/or self repair, please can share the methods which worked.  Thank you.