4
Performing Detectors Routine Maintenance
Maintaining an Electron Capture Detector (ECD)
Thermo Scientific
TRACE 1300 and TRACE 1310 Hardware Manual
169
Wipe Test
Before leaving the factory, each ECD is leak tested for surface radio contamination by means
of the
Wipe Test
method. Each detector is provided with a
Wipe Test Certificate
reporting
the results of the values found and the procedure followed.
Cleaning or Replacing the Collecting Electrode (Anode)
To clean or replace the collecting electrode
1. Put the GC in standby condition.
2. Cool the detector to room temperature.
3. Turn the make-up gas off.
4. Power off the GC.
a.
Push down the power switch (breaker), located at the back of the instrument, to the
position O.
b. Unplug the power cable from the AC Input connector into the back of the GC and
from the wall outlet.
5. If external modules are present, unplug the power cable from the AC Input connector of
each external module, and from the wall outlet.
6. Open the module flap cover.
7. Disconnects the signal and excitation cables from their contacts on the cell top cover.
See
IMPORTANT
The users of the ECD detector in the United States are required to perform
a
Wipe Test
on their ECD at intervals not exceeding 6 months, following the reported
procedure. For other countries, please refer to the appropriate agency for equivalent
requirements.
Note
By pressing the
Maintenance
button, the GC cool down is automatically
carried out.
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