Aztec ATS430 | Turbidity sensor
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OI/ATS430–EN Rev. H 23
7 Maintenance
7.1 Fitting and replacing the wiper blade
Referring to Fig. 7.1:
1.
Refer to the AWT440 transmitter operating instruction
(OI/AWT440-EN and stop wiper operation.
2. Remove sensor from sample and clean the sensor.
3. Using a 5.5 mm spanner or hex nut driver, remove nyloc
retaining nut
A
.
4. Remove wiper arm
B
complete with blade and captive
O-ring.
5. Thoroughly clean wiper motor shaft
C
and sensor end face
and check condition. If the shaft is damaged, consult the
factory.
6. Lightly grease captive O-ring within the new wiper arm
assembly.
7.
Align the flat in the new wiper arm assembly with the flat on
wiper motor shaft
C
and fit the arm to the shaft, ensuring
the wiper blade faces the sensor end cap.
8. Insert supplied feeler gauge
D
between the wiper arm
captive O-ring and the sensor end cap.
9. Fit a new nyloc M3 nut and tighten until feeler gauge
D
is
lightly pinched but can be removed without excessive force.
Remove the feeler gauge.
10. Refer to the AWT440 transmitter Operating instruction
(OI/AWT440-EN) and re-start the wiper operation. Ensure
the wiper arm functions correctly by issuing a manual clean
request from the transmitter.
11. Replace the sensor in the sample.
12. Refer to Section 5.1, page 9 to reset the wiper lifetime.
Fig. 7.1 Fitting and replacing the wiper
C
A
B
D
