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English 18259
Display is totally clear or totally dark
•
Set the rotary dial to MENU switch on and leave unit for five minutes.
•
Press UP
three
times (listen for three beeps) then press ENTER
•
Press and hold down UP until the display becomes visible again (this can take
up to 20 seconds). Use UP and DOWN to adjust the display's contrast.
•
Press ENTER to exit.
The analyser continually beeps and the display has frozen.
•
You have exited a menu function without completing the required sequence.
•
Rotate the dial back to MENU
•
Press ENTER until MENU appears on the top line
- (NB You may be changing settings when you do this)
•
Rotate the dial to the required display position.
The unit will not turn off.
•
Do not hold down the on/off button.
•
Try connecting the charger.
9. ANNUAL RECALIBRATION AND SERVICE
Although sensor life is typically more than two years the analyser should be re-
calibrated and serviced annually to stop any long-term sensor or electronics drift or
accidental damage.
Local regulations may require more frequent re-calibration.
SERVICE MODE
This mode can be selected from MENU and gives password protected access to
certain functions
WARNING: entering inappropriate codes may corrupt the
calibration of this instrument
.
The User level pass code to view software issue is 1111
