Wipe Test; Cleaning Or Replacing The Collecting Electrode (Anode) - Thermo Scientific TRACE 1600 Hardware Manual

Wipe Test

Cleaning or Replacing the Collecting Electrode (Anode)

Thermo Scientific
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.
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.
 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.
Note By pressing the Maintenance button, the GC cool down is automatically
carried out.
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 Figure 153.
4
Performing Detectors Routine Maintenance
Maintaining an Electron Capture Detector (ECD)
TRACE 1600/1610 Hardware Manual 183