Hach BioTector B3500C User Manual

Page 144
89_TC SPAN CAL FAIL
90_TC SPAN CHCK FAIL
TC Span Calibration/Check result is
outside the specified TC BAND defined
in Span Program menu. See Section
8.3.4.3 Span Program for details.
Check the concentration of the
standard solution used.
Check the settings in Span
Calibration menu.
Check the operation of the
BioTector.
91_TC OVERFLOW
High TC readings at the end of TC
phase, even though the TC time has
been automatically extended to its
maximum time of 300s. See Section
8.3.6 Reaction Check for details.
Exceptionally high TC.
Check system operation ranges in
System Range Data menu.
Increase operation range to
reduce injected sample volume.
Increase the TC SPARGE TIME in
System Program, System
Program 1 menu.
92_HI AIR PRESSURE 2
Air pressure supply has been more
than 2.0 bar for longer than 5 seconds.
When the oxygen concentrator is
running, the pressure typically cycles
from 1.5 bar to 0.9 bar.
If system does not detect the air
pressure drop to normal levels, the air
supply is isolated from the system and
oxygen is not generated.
Extreme fluctuations in air supply
pressure or faulty external air
regulator.
Reduce the external air supply
pressure to 1.5 bar when the
oxygen concentrator is not
running.
When the problem is rectified,
acknowledge the warning by
pressing the ENTER key in the
Fault Archive menu, to reset the
O2-Controller Board.
93_HI AIR PRESSURE 1
Air pressure supply has been more
than 1.8 bar for longer than 60
seconds.
When the oxygen concentrator is
running, the pressure typically cycles
from 1.5 bar to 0.9 bar.
Extreme fluctuations in air supply
pressure or faulty external air
regulator.
Stop the BioTector and reduce the
external air supply pressure to 1.5
bar when the oxygen concentrator
is not running.
When the problem is rectified,
acknowledge the warning by
pressing the ENTER key in the
Fault Archive menu, to reset the
O2-Controller Board.
94_LO AIR PRESURE 2
Air pressure supply has been less than
0.6 bar for longer than 5 seconds.
When the oxygen concentrator is
running, the pressure typically cycles
from 1.5 bar to 0.9 bar.
If system does not detect the air
pressure increase to normal levels, the
air supply is isolated from the system
and oxygen is not generated.
Extreme fluctuations in air supply
pressure or faulty external air
regulator.
Increase air supply pressure to
1.5 bar when the oxygen
concentrator is not running.
When the problem is rectified,
acknowledge the warning by
pressing the ENTER key in the
Fault Archive menu, to reset the
O2-Controller Board.

Hach BioTector B3500C Specifications

General

Brand	Hach
Model	BioTector B3500C
Category	Measuring Instruments
Language	English