Thermo Scientific ISQ 7000 Hardware Manual page 72

1
Performing Routine Maintenance
Maintaining the Foreline Pump
44 ISQ 7000 Hardware Manual
22. If you are using hydrogen as a carrier gas, cool down the injector to prepare the GC for
powering off. See the GC documentation for more information. After the heated zones
are cooled down, power-off the GC.
CAUTION BURN HAZARD: The oven may be hot. Allow it to cool to room temperature
before opening it. The injector will still be hot, so do not touch it.
ATTENTION RISQUE DE BRÛLURE : le four peut être chaud. Laissez-le refroidir à la
température ambiante avant de l'ouvrir. L'injecteur sera toujours chaud, donc ne le touchez
pas.
WARNING FIRE HAZARD: If you are using hydrogen as a carrier gas, you must cool down
and shut off the GC to prevent the buildup of hydrogen in the vacuum manifold. See the
"Hydrogen Safety Precautions"
AVERTISSEMENT RISQUE D'INCENDIE : si vous utilisez de l'hydrogène comme gaz vecteur,
vous devez refroidir et mettre hors tension le CG pour éviter l'accumulation d'hydrogène
dans le collecteur à vide. Reportez-vous aux « Précautions de sécurité relatives à
l'hydrogène » à la page xvi de la préface pour plus d'informations.
23. Click Shut Down on the ISQ Dashboard or on the ISQ 7000 status page within the
instrument software.
24. Click Yes to continue the shutdown process. The high voltages, heaters, and
turbomolecular pump power off. Once the turbomolecular pump reaches 50% speed, or
five minutes elapses, the foreline pump powers off and you may vent the system.
Note The amber vacuum light on the front of the instrument starts blinking rapidly,
indicating the mechanical pump has powered off after a five minute period with the
turbomolecular pump off (such as when the instrument is shut down), or due to a
sustained vacuum fault lasting five minutes. When the turbomolecular pump spins down
below 50% speed due to the shut down process, the vacuum light turns off.
25. Reach around the right side to the back of the instrument and push down on the power
switch to power-off the ISQ 7000 instrument.
26. If you are using hydrogen as a carrier gas, unscrew the hydrogen safety screw on the front
door.
on page xvi of the Preface for more information.
Thermo Scientific