Troubleshooting
Troubleshooting Guides
6-2
Model 15
i
Instruction Manual
Thermo Fisher Scientific
Table 6–1.
Troubleshooting - General Guide
Malfunction
Possible Cause
Action
Does not start
(The light on display does
not come on and the pump
motor is not running.
No power or wrong power
configuration
Check the line to confirm
that power is available and
that it matches the voltage
and frequency configuration
of the instrument.
Main fuse is blown or
missing
Unplug the power cord, open
the fuse drawer on the back
panel, and check the fuses
visually or with a multimeter.
Bad switch or wiring
connection
Unplug the power cord,
disconnect the switch and
check operation with a
multimeter.
Pressure transducer does not
hold calibration or is noisy
Pressure transducer
defective
Replace pressure transducer.
Run output noisy
Recorder noise
Replace or repair recorder.
Sample HCl concentration
varying
Run instrument on a span
HCl source - if quiet, there is
no malfunction.
Foreign material in optical
bench
Clean optical bench.
Analyzer does not calibrate
properly
System leak
Find and repair leak.
Pressure or temperature
transducer out of calibration
Recalibrate pressure and
temperature transducer.
Dirty system
Clean cells and flow
components.
Leaky correlation wheel
Replace with a known good
wheel.