Thermo Scientific ISQ 7000 Hardware Manual page 128

1
Performing Routine Maintenance
Replacing the Electron Multiplier
100 ISQ 7000 Hardware Manual
3. Click Shut Down on the ISQ Dashboard or on the ISQ 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 98. Powering Off the ISQ 7000 Instrument
Hydrogen Safety Screw
(On Front Door Panel)
7. Open the front door of the instrument.
Hydrogen Safety Screws
Vacuum Interlock Shield
Power Switch
Vent Valve
Knob
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