But you didn't just visually check the appliance mate, you said that you took the broken insulation panel out to show the customer.
That constitutes unnecessary and unrequested 'work' in my book.
Do your bosses expect you go the extra mile and do a flue flow and spillage test too?
I visually checked it.....saw that something was wrong so moved the panel to confirm my suspicion .....even if I hadn't moved the broken panel it would've resulted in the same outcome. So I dont think I did any unnecessary work. No.....no spillage or flue flow....no need if you can see any evidence of sooting or missing coals, broken panels etc.