Hi Bob
No, this particular door was not warped but then the unit had not been fitted for very long. It would be unfair to blame the Dorgard for this anyway since warping is caused by incorrect installation of the hold-back relative to the closer. The trouble is that this is the only place you can mount a Dorgard unit whereas most other kinds can be mounted in the correct position to avoid diagonal stress over the door leaf.
And before someone points out with relish that this would be caught by the maintenance regime, I entirely accept that it should. In the same way as the carpet rucking up and the unit not clearing one in every three tries and the local sounder developing a fault and - and - and. It was the difficulty in gauranteeing against human error; that all the faults would be caught, that persuaded us against them. There are enough problems using system integrated units, why introduce more ?
Remember too, I was talking about an old peoples home with frail occupants. they may well be acceptable in another, more robust, environment.............subject to risk assessment and the statutory bagpipe conservation survey.
Nice to know the old folks would be safe at least once a year on Burn's night when they would all be out the way tucking into the 'cratur' when the doors suddenly release. =D