Thermo Scientific TRACE GC Ultra Maintenance And Troubleshooting Manual page 227

Clean the Collecting Electrode
1. Press LEFT DETECTOR or RIGHT DETECTOR,
depending on the location of the ECD, to access
the ECD control table. In the following
example, an ECD installed on the right channel
is considered.
2. Scroll subsequently to
and press OFF.
temp
3. Scroll to
Mkup(N2)
4. Disconnect the signal, excitation and heater
cables from the detector.
5. Remove the cover and the detector chimney
unscrewing the two retaining Allen screws. Use
a 1.5 mm Allen wrench.
6. Unscrew the collecting electrode and remove it
using tweezers.
7. Clean the collecting electrode, washing it with
toluene and hexane, preferably in an ultrasonic
bath. In the most critical cases fine emery paper
can be used.
Maintenance and Troubleshooting Manual
and
Base temp ECD
and press OFF.
Maintaining an Electron Capture Detector
RIGHT DETECTOR (ECD)
Base temp
ECD temp
Ref current nA
Freq kHz
Pulse amp V
Pulse width us
Mkup (N2)
Chapter 12
.
250 Off <
250 Off
1.0
(2.15)
25
1.0
40 Off
227