12
Installing and removing the valve drive
Tools
3.0 mm and 2.5 mm Allen wrenches
Cross-head screwdriver size 1
Oscilloscope
Soldering iron
Duration
Approx. 15 min
Level of difficulty
Level 3 (from 1 to 7, very easy to very difficult)
Removing the gearbox and motor
Process
Figure
1. Use pliers to loosen
both circlips (A,B)
on the the gearbox
mounting inside the
device; use a screw-
driver to lift them
off.
Fig. 9
The drive is fastened down
by circlips
2. Pull the drive and
motor together with
the slotted disk and
photoelectric sensor
away from the
mounting to
remove.
Fig. 10
Slotted disk (A), photoelec-
tric sensor (B), gearbox (C),
and motor (D)
B
A
A
B
C
D