51
8 SENSOR MAINTENANCE…
Fig. 8.1 7320 100 Low Range Sensor – Dismantling and Cleaning
…8.2.1 Dismantling and Cleaning – Figs. 8.1 to 8.4
Clean the inside of the flowcell and other
assemblies using mild detergent.
Rinse thoroughly with de–ionized water.
Inspect the wiper blade for wear or damage and
fit a new one if necessary, ensuring that it is
fitted in the 'parked' position.
Refit the receiver and emitter modules using new seals,
ensuring that the module locating pins are seated
correctly in their keyways before tightening the collars.
5
6
Unscrew the collar and carefully
withdraw the emitter module.
Unscrew the collar and
carefully withdraw the
cleaner module.
Unscrew the collar and carefully
withdraw the receiver module.
Perform a manual clean (see Section 2.3)
to ensure that the wiper blade is in
the 'parked' position.
Apply power to the sensor and perform a
manual clean (see Section 2.3) to ensure
that the wiper blade is fitted correctly and is
positioned as shown above when 'parked'.
Refit the cleaner module using a new seal,
ensuring that the module locating pin is
seated correctly in its keyway before
tightening the collar.
8
Flow chamber as
viewed from above
(not to scale)
1
7
Flowcell
Drain
valve
Inlet/Isolating
Valve
Wiper Blade
(parked position)
– see inset
Seal
Seal
Locating Pin
Keyway
Locating
Pin
Keyway
Wiper in
'parked'
position
9
2
3
4
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