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Troubleshooting
Troubleshooting Guides
6-6
Model 146i Instruction Manual
Table 6-2. Troubleshooting - Alarm Messages, continued
Alarm Message
Possible Cause
Alarm - Pressure
High pressure indication
Alarm - Intensity
Defective detector
Defective measurement interface
board
See "Cell Frequency High" and
"Cell Frequency Low or Zero" in
Table
Alarm - Oz Level 1
Does not reach the level 1 setting
Check (Opt)
Oz Level 2 Check (Opt)
Does not reach the level 2 setting
Oz Level 3 Check (Opt)
Does not reach the level 3 setting
Oz Level 4 Check (Opt)
Does not reach the level 4 setting
Alarm - O
Conc.
Concentration has exceeded range
3
limit
Concentration low
Alarm - Motherboard
Internal cables not connected
Status
properly
Defective motherboard
Alarm - Interface
Internal cables not connected
Status
properly
Defective measurement interface
board
Alarm - I/O Exp Status
I/O expansion board was installed,
but is not currently installed.
6-1.
Action
Check the pump for a tear in
the diaphragm, replace with
pump repair kit if necessary.
Refer to "Preventive
Maintenance" chapter.
Check that capillaries are
properly installed and
O-rings are in good shape.
Replace if necessary. Check
flow system for leaks. See
the "Servicing" chapter.
Replace detector.
Replace measurement
interface board.
See "Cell Frequency High"
and "Cell Frequency Low or
Zero" in
Table
6-1.
See
Table 6-1
for
troubleshooting information.
See
Table 6-1
for
troubleshooting information.
See
Table 6-1
for
troubleshooting information.
See
Table 6-1
for
troubleshooting information.
Check to insure range
corresponds with expected
value. If not select proper
range.
Check user-defined low set
point, set to zero.
Check that all internal cables
are connected properly.
Recycle AC power to
instrument. If still alarming,
replace board.
Check that all internal cables
are connected properly.
Recycle AC power to
instrument. If still alarming,
replace board.
Re-install board, if desired,
and recycle power.
Thermo Fisher Scientific
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Troubleshooting
