It was. Didn't ring true to me at first. But the nozzle hadn't been fitted correctly by the manufacturer.
Up to the installer to check that before it is handed over
No it isn't, nobody is checking the bolts inside diffusers, to check nozzles are correctly attached - you'd be taking them apart and voiding warranties in many cases.
Cheers, I didn't doubt it, unless they were looking at getting sued by blaming them.
Are they doing Grease?
well somebody must check them before they leave the factory unless they have got from a cheap skate firm. All my years in Engineering and everything was checked and tested by an inspector before they left the factory.
That’s what I would have thought. Surely these units are run for a period to see if anything falls off or rattles. I doubt we’ll know the truth but I’m guessing if the company wants to carry on supplying such units for other developments then a mutual agreement has been made.
By installer I assumed you meant actually installing on site. It should have been picked up by the QA in the factory hence why it's a factory defect.