Teledyne GC-Pro/TCD - Gas Chromatograph - Manual (Page 103)

GC-Pro TCD Maintenance
Teledyne Analytical Instruments 89
Maintenance & Troubleshooting
WARNING: DANGEROUS HIGH VOLTAGES EXIST INSIDE THIS
INSTRUMENT.
THERE ARE NO USER SERVICEABLE PARTS INSIDE
THE HOUSING OF THE ANALYZER. WORK IN THESE
AREAS MUST BE PERFORMED BY AUTHORIZED
AND TRAINED PERSONNEL ONLY.
CAUTION: MANY OF THE ELECTRICAL PARTS WITHIN THE
ANALYZER ARE SUSCEPTIBLE TO DAMAGE FROM
ELECTROSTATIC DISCHARGE (ESD). USE ESD
SAFE PROCEDURES WHEN HANDLING OR
WORKING WITH ELECTRONIC COMPONENTS
.
If the analyzer is suspected of incorrect operation, always evaluate
performance with span gas flowing in the sample path. Never attempt to
evaluate performance on sample gas. If analyzer sensitivity is
questionable, use the span gas. For all other evaluations, connect a zero
gas and use low range for maximum sensitivity. The important
consideration is to control as many variables as possible. Using cylinder-
supplied gases of known content eliminates the possibility of
introducing an unknown variable.
Do not overlook the seemingly obvious. Check to see that power is
available for the instrument (and of the proper voltage, etc.), and that
connections are correct. Also verify that support/calibration gases are
not depleted.