TELEDYNE ELECTRONIC TECHNOLOGIES
Analytical Instruments
5-14
5.0 Maintenance &
5.0 Maintenance &
5.0 Maintenance &
5.0 Maintenance &
5.0 Maintenance & T
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Trrrrroub
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oubleshooting
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Model 306W
Model 306W
Model 306W
Model 306W
Model 306WA
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Symptom
Symptom
Symptom
Symptom
Symptom
Cause
Cause
Cause
Cause
Cause
What
What
What
What
What T
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To Do
o Do
o Do
o Do
o Do
Calibrator current is erratic.
Proper calibration current exists,
but there is no cell response.
a) Poor electrical connections.
a) Short circuit in calibrator.
a) Check for proper
connections between
the control unit and
calibrator on terminal
strip TS5.
b) Ensure that brown (13)
and yellow (14) wires
connect to brown and
yellow posts respec-
tively on calibrator
assembly in the cell
compartment.
c)
Moisten wick. See
section 4.3.
a) Verify cell response to
oxygen by loosening the
calibrator assembly to
introduce air, and then
bolt back in place.
Recorder/meter should
show increase.
b) If there is no response,
inspect the calibrator for
obvious shorts. If not
easily repairable,
replace the calibrator.