25.
Rinse the sensor under a tap for about 5 seconds to remove any excess electrolyte, then gently
wipe with a soft tissue to ensure all parts are completely dry. Drain the overflow electrolyte from
the container into a sink and flush away. Discard the used container.
26.
If not using a protection cap with grille proceed to step
. Otherwise, take a new Dacron
®
mesh
patch from the box of O-rings in the recharge kit. Place the mesh in the center of the protection
cap. It is very important that the mesh is in the center of the protection cap and covering the
entire grille. Lower the sensor onto the protection cap making sure not to disturb the mesh.
27.
Push the protection cap firmly into place, making sure one of the four slots in the protection cap
fits over the small locking pin (highlighted right). If it is necessary to turn the protection cap to fit
over the locking pin, ensure you only turn it
clockwise
to avoid unscrewing the cartridge.
28.
Finally, screw the protection cap locking washer back into place in a clockwise motion, and
tighten finger tight.
Section 7 Troubleshooting
7.1 Oxygen sensor
Problem
Probable cause
Possible solution
Sensor won't calibrate, even after
cleaning and/or membrane
change.
Instrument internal
barometric pressure
sensor needs calibration.
Calibrate using a certified barometer. Do not
correct for sea level !
Wet membrane
interface.
Wipe dry with a tissue and re-calibrate.
"H
2
S insensitivity" option
enabled.
Disable from the menu on the measuring
instrument.
"0000" O
2
levels displayed.
Wrong reading scale
"XXXX" selected for
display unit.
Change reading scale by selecting "X.XXX, XX.XX
or XXX.X" on the instrument.
Shorter than expected sensor
operation in relatively high
dissolved O
2
concentration.
High O
2
concentrations
generate deposits more
quickly.
Install a less permeable membrane.
Turn off the analyzer when sensor is not in a low
O
2
concentration.
20
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