Interlock
Hi hotpoinfan,
this generation of machines with the flush door, uses a mechanical interlock which has a micro switch, so the machine can only run with the door shut. To lock the door during the wash, it has a pressure latch to lock the door whist the drum contains water and a rotation sensor on the motor to prevent door opening whilst the drum is rotating. If you think about it the drum is either rotating or has water in it, the advantage of this method is that there is no time delay at the end of the programme.
The previous generation with the proud door, used the same arrangement, the door being locked whilst it contained water and whist draining and spinning the door was locked electrically, as in the more common interlock, this is why you hear a buzzing when the machine pumps out and it has a delayed door release at the end of the programme.
Over the years of working on the flush door machines, the most common door problem was the pecker on the motor, which bent out of alignment and the door itself, the small pillars the screws for the hinges, latch plate and bowl retainers used to regularly break, I used to reinforce them with epoxy putty which certainly helped prolong the life of the door.
I hope you enjoy this machine, whatever your views on this basic machine, throughout the late 80's early 90's they were very popular, and with a few simple repairs along the way they would last years, as the ebay threads keeps proving.
Mathew
