I was called to Doncaster Magistrates Court, for problems with disabled access doors, where Orions are still in place. It turned out not to be the Orions that were the problem, the innards had been removed, retaining the pivot, and a Dorma ED200 fitted.
The ED200 was also working correctly, this time the problem with the door was down to adjustment, original bad fitting of the cover plate surrounding the top pivot and loose fittings in general.