6.
Remove any contamination from the seal groove and the mating surface for the
sensor head. If possible use a plastic cleaner that does not leave residues.
NOTE
If necessary smear a thin coating of Vaseline in the seal groove of the front screen.
This makes mounting easier.
7.
Insert the new seal
1
, starting in the middle. During this process first align the
centre markings on the sensor head (
2
and
3
) and seal (
4
and
5
).
2
4
1
3
5
Figure 86: Inserting the rubber seal
NOTICE
If the front seal is not inserted correctly, the front screen may be damaged.
b
Do not use any pointed or sharp tools.
8.
First place the seal only lightly in the rounded sections of the seal groove. This will
avoid stretching the seal.
9.
Only then press the seal home. Do not rotate the seal while inserting it.
2
1
3
Figure 87: Depth for pressing in the seal
1
Housing
2
Seal edge flush with housing edge
3
Seal
The seal is pressed in far enough when the edge of the seal and the sensor head
are flush.
10. It is imperative to check that the seal is seated evenly all the way around the
groove.
11. Check whether the mirror on the motor is dirty and, if necessary, remove any cont‐
amination using an optic brush.
12. Take the new front screen from the packaging.
9
MAINTENANCE
124
O P E R A T I N G I N S T R U C T I O N S | S3000
8009942/ZA18/2019-11-14 | SICK
Subject to change without notice
