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...8 SENSOR MAINTENANCE
...8.2.1 Dismantling and Cleaning – Figs. 8.1 to 8.4
Wiper Drive Shaft
(square section)
Lower Wiper –
Large
blade facing out
Rear
Spacer
54
Upper Wiper –
blade facing in
Metal
Nut
Washer
Small Nylon
Washers
Wiper Blades in the Parked Position
Flowcell
Receiver Glass
Fig. 8.4 7320 200 High Range Sensor – Replacing the Wiper Blades
Notes.
• The proper functioning of the cleaner system depends
on the correct assembly of the washers and orientation
of the wiper blades.
• Do not use the wiper blade arms to rotate the wiper drive
shaft.
1
Remove the wiper blade securing nut.
2
Remove the blades and washers from the drive shaft.
Ensure the blade drive shaft is correctly positioned by
3
performing a manual clean (see Section 2.3) to 'park' the
blades.
Reassemble the components on the drive shaft in the order
4
shown, ensuring the wiper blades are in the parked position,
i.e. horizontal.
Using suitable spanners, prevent the wiper drive shaft from
5
turning and tighten the wiper blade securing nut.
Perform a manual clean (see Section 2.3) to check system
6
operation. Ensure blades 'park' correctly.
Securing Nut
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