Max300-LG : Description - Specifications - Installation Guide
Extrel
Core Mass Spectrometers
Page 16
To perform maintenance on the pumps or components within the vacuum chamber, the
system must first be cooled down and vented.
1. With the control software, choose Control Parameters under the
Configuration Tab.
2. To turn off the Filaments, Multiplier and Ion Gauge, remove the check in
the boxes next to them.
3. Under Ionizer, note the original temperature and set the Temperature
Setpoint to 0
o
C.
4. Set the sample inlet valve to a stream not containing condensable
components. The zero gas is usually suitable.
5. On the transfer line heater control panel, switch off the transfer line heater.
6. Unplug the heater, which is bolted to the ionizer flange and plugged into a
plastic connector directly behind the ionizer, Figure 7.
Figure 7: Ionizer Flange
7. Open Instrument Status and monitor the ionizer temperature.
8. When the ionizer temperature is below 100
o
C, remove the electronics
power by unchecking the box for Power in the Control Parameters section of the
Configuration Tab.
9. Turn off the pumps via the Vac System & AC switch visible in Figure 8
below.
10. Turn off the Heater switch also visible in Figure 8.
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