How can this be done ? In a double oven there is no access from the top and the glass cover will not come free - despite what it says in the handbook!

Robert M.Donald, December 2012

Remove trays,liners etc to improve access.
Pour a little olive oil onto a thin strip of cloth and wrap it around the gap between the glass cover and the lamp housing. Leave it to soak through to the threads for a couple of hours. (Alternatively, use a pastry brush to apply olive oil directly to the threads.)
The glass cover unscrews anti-clockwise - imagine looking up at it with your head in the oven!! - but glass threads tend to bind, and need lots of force.
After a small rotation the cover will seem to reach a stop - apply firm and increasing pressure and the cover will eventually and suddenly come free.
The lamp is a small edison screw 40 watt 300 degrees C bulb - from Maplin for about £2.99
After cleaning the cover, put a little olive oil on the threads.
Good luck

rafapp, January 2013

Glass unscrews can be very tight, special plastic tool available from Neff makes it easy, if not can try oil filter removal tool for cars if you have one. Cheers

Kenjo, January 2013

If the handbook says it will come free the chances are that it will come free - they would not go out of their way to deliberately lie in the handbook. It's Neff not Naff.

If the cover is rectangular it will be held in place by some kind of spring clip and will need to be prized out using a flat bladed screwdriver - a big one.

If the cover is circular then it will unscrew anti-clockwise - a damp cloth will help to get a good grip on it.

Keep trying - good luck...

Peccavi, December 2012