Hach-Lange ORBISPHERE 6110 Basic User Manual - Manual (Page 23)

Message Probable cause Solution
E100: Ultrasound error.
The ultrasound power supply is
OFF.
Check the ultrasound power supply.
The emergency STOP button is not
released. Release emergency STOP button
by turning it clockwise.
There is too much water in the
ultrasound generator.
Remove any excess water.
E200: Motor error - High limit.
The motor is above the reference
position.
Go to the maintenance menu, move
the motor down and initialize it.
An upper or lower limit is ON.
E400: Problem to initialize the motor
displacement. The measurement is
aborted. Please restart the
instrument.
N/A
Turn the instrument off and restart
it.
Warning messages
Message Probable cause Solution
W1: Unstable reference pressure.
The variation of reference pressure
is too high. Check the pressure stability of the
input reference gas.
W2: Unmatched package size.
The measured package height is
different from the value defined in
the package definition.
Check the package size definition.
W4: Measurement timeout.
Accuracy of dissolved O2 not
guaranteed.
The measurement pressure is lower
than 3.5 bar.
Check the black seal on the piercing
unit.
Check the purge gas pressure.
Check the forcing gas pressure.
Check the Goretex filter.
Gas path not airtight.
Check the airtightness of the gas
path between the piercing unit and
the measurement chamber.
W20: Measurement process
incomplete. Insufficient initial
package pressure. The pressure in the package is too
low to continue with a
measurement.
Restart the measurement with
another package.
W40: Spontaneous degassing...
A spontaneous degassing is
detected at the end of the first
expansion.
Restart the measurement with
another package.
W80: Measurement process
incomplete. Insufficient package
pressure during ultrasound stage. The measured pressure is too low
to compute the second phase of the
measurement.
Check foam intrusion in the gas
path.
Check Goretex filter.
Measurement problems
Observation Explanation
Negative TPO results. CO
2
purge gas is not of the required purity of > 99.9%.
The instrument never reaches the threshold value. CO
2
purge gas is not of the required purity of > 99.9%.
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