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6
MAINTENANCE PROCEDURES
Note: disconnect power supply before removing the instrument cover.
6.1
Measuring cell maintenance
Refer to Section 5.1 and 5.2 of this manual.
6.2 Flowmeter
6.2.1 For Model T17CA4100
Clean tube and float whenever dirt has accumulated causing malfunction.
Using a screwdriver loosen and slide the top tube retainer ring towards the enter of the tube.
Remove tube by pulling forward.
WARNING
TAKE CARE NOT TO LOSE THE O-RING AND THE FLOATS!
Clean all parts in mild detergent, rinse and wipe dry using clean tissue paper.
To reassemble, place the tube retainer ring over the tube, replace the O-ring, drop the float
in the tube and re-position tube between inlet and outlet connections.
Gently slide the tube retainer ring back into position, making sure it is properly located by
carefully rotating (red mark on the tube should be on the front side).
6.2.2 For Model T17CA4200
Clean tube and float whenever dirt has accumulated causing malfunction.
Remove the plastic flow tube retainer by unclipping from the flow tube.
Using a screwdriver loosen and slide the top tube retainer ring towards the enter of the tube,
also lift the optical sensor housing towards the center of the tube.
Remove tube by pulling forward.
WARNING
TAKE CARE NOT TO LOSE THE O-RING AND THE FLOATS!
Clean all parts in mild detergent, rinse and wipe dry using clean tissue paper.
To reassemble, place the tube retainer ring and optical sensor over the tube, replace the O-ring, drop the
float in the tube and re-position tube between inlet and outlet connections.
Gently slide the tube retainer ring and sensor housing back into position, making sure they are properly
located by carefully rotating (red mark on the tube should be on the front side).
6.3
Electronic circuit board
It is recommended that in the event of failure of the electronic board a replacement is fitted and the
faulty board is returned to factory for repair.
6.4
Optical sensor (Only for Mod. T17CA4200)
The flow sensor is housed in a heat shrunk sleeve. For this reason it is recommended that the faulty
unit is replaced with a spare item.
