Installer Manual Autotrol 368 / 604-606 - Maintenance
44 / 54 Ref. MKT-IM-007 / A - 16.12.2016
9.2.7. Cleaning or replacing the flappers
No. Operation
Note
To replace or clean the flappers, you first have to disassemble the camshaft and the motor.
See “Motor and camshaft replacement”, page 42.
A
The optical sensor (5) is clipped on the front edge, gently press on the clips to release the
optical sensor (5) from its location.
Caution
Take care with sharp edges.Use of protective glove is highly recommended to remove the
spring (4).
B Loosen the four screws (6).
C
Using a screwdriver, release the spring (4) from the flappers (1) and swipe the spring (4) on
the bosses to remove it.
D Loosen all the screws (3).
E Remove the front plate (2) in order to access to the flappers (1).
F Clean or replace the flappers (1).
Note
The outline of the flapper seat can be seen on the flapper side. If the outline is irregular,
this may indicate that debris is or has been preventing the flapper (1) from closing, and
potential damage.
G Reverse above procedure steps to rebuild.
Note
When refitting the front plate (2), always follow the screwing order indicated in green.
Note
When refitting the spring (4), always follow the screwing order indicated in red.
A
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