Thermo Scientific ISQ 7000 Hardware Manual page 120

1
Performing Routine Maintenance
Replacing a Dual Filament
92 ISQ 7000 Hardware Manual
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.
3. Click Shut Down on the ISQ Dashboard or on the ISQ 7000 status page within the
instrument software.
4. 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.
5. 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.
6. If you are using hydrogen as a carrier gas, unscrew the hydrogen safety screw on the front
door.
.
Figure 90. Powering Off the ISQ 7000 Instrument
Hydrogen Safety Screw
(On Front Door Panel)
Hydrogen Safety Screws
Vacuum Interlock Shield
Power Switch
Vent Valve
Knob
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