Waters Micromass ZQ 2000, Operator'S Manual, Page: 84 / 133

Maintaining 84
5
Note: Venting interrupts electrical power to the turbomolecular pump. Nevertheless,
the pump continues to operate briefly, until rotational speed decreases to less than
50%, at which point its vent valve opens.
6. Disconnect the appropriate front panel gas and electrical connections.
7. Unscrew the probe’s two knurled thumbscrews, and retract it from the source
(
Figure 5-7 )
Figure 5-7 Probe Assembly in Position on the Source
STOP
Attention: If you are cleaning only the sample and cone gas nozzles, you
need not vent the system.
Caution: The probe might be too hot to handle. Allow time for it to cool.
STOP
Attention: Never remove a probe before it cools to below 100 °C and the
source heater cools to below 50 °C. Doing so shortens the life of the probe
heater. To reduce cooling time, continue flowing API gas.
Thumbscrew
Clip
Clip
Fastener
Fastener
Source Enclosure Cover
Source