Extended Systems ExStik DO600, User Manual

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DO600-en-EU_V7.2 09/14 11
Appendices
Troubleshooting Guide
Symptom Possible Causes Action
Unit will not power on ‐ Batteries not in place
‐ Dead batteries
‐ Battery polarity incorrect
‐ Replace Batteries
‐ Replace Batteries
‐ Reorient/Replace
Batteries
“BAT” indicator shown on
display
‐ Batteries are weak ‐ Replace Batteries
Unstable Readings ‐ Insufficient electrolyte in
probe (Air bubbles present
when probe is inverted.)
‐ Electrolyte is depleted
‐ Replace electrolyte, and
membrane cap assembly.
Readings drift down ‐ Insufficient stirring (the
probe consumes oxygen at
the measuring surface,
requiring constant sample
movement across
membrane)
‐ Move probe in sample or
stir sample
Slow Response ‐ Dirty or damaged
membrane
‐ Replace electrolyte and
membrane cap
Electrode cannot be
calibrated
‐ Depleted electrolyte
‐ Dirty or damaged
membrane
‐ Replace electrolyte and
membrane cap
Electrode cannot be
calibrated after replacing
the electrolyte and
membrane cap
‐ Dirty probe (Cathode is not
a shiny gold color)
‐ Clean cathode with
Polishing paper * perform
the electroninc Zero
calibration
Sample reading is frozen ‐ Unit is in “HOLD” mode
‐ Unit is locked
‐ Release HOLD
(momentarilly press
Mode/Hold button)
‐ Remove batteries, press
ON/OFF button, replace
batteries and restart
* Polishing paper is available in the DO603 membrane kit
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