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e) Place the front door on the new front as shown. Turn the front
door a quarter turn clockwise until it is neatly vertical.
Make sure that the round disc of foam, in the hole against the
changer between the door and the changer, is present.
(g) Fit both filter holders.
The ventilation unit is now 'mirrored' and ready for
further assembly.
f) Place on the bayonet at the new rear as shown. Turn the bayonet
a quarter turn clockwise until the bayonet is secure.
Make sure that the foam disc is between the changer and the
bayonet.