Models 947, 948 and 960 Leak Detectors Operations and Service Manual
1-6
1.2.3 Removing Loose Packing from Interior of 947/948/960
Once the 947/948/960 is off the skid, the loose packing inside the enclosure must be
removed.
1. Open the front panel of the 947/948/960, which is the main access to service the pumps
and the spectrometer tube.
2. Take out and remove all loose packing from inside the leak detector.
1.3 Front Panel Controls and Indicators
The front panel controls and indicators are identified by number in Figure 1-3. Descriptions
of each numbered item follow Figure 1-3.
Figure 1-3
Front Panel Controls and Indicators
1
Volume Control
Controls the volume of the audible leak rate signal.
2
Display Button
Displays the selected reject level of the leak detector using the
50-segment leak rate bar graph and the appropriate range exponent.
3
Rough Pump
Power Switch
Controls the power to the roughing pump.
4
Detector Power
Switch
Controls the power to the backing pump and high vacuum pump.
1
2
3
4
5
6
7
9
10
11
12
13
8
14
15
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Summary of Contents for 948
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