Leica Biosystems PELORIS_PELORIS II - Manual (Page 37)

Hardware
Leica PELORIS™ User Manual Rev K © Leica Biosystems Melbourne Pty Ltd 2011 37
Returning to the Internal Filter System
Use the following procedure to reconfigure an externally connected instrument to internal carbon
filter use.
1. Ensure a new carbon filter is correctly installed (see 2.4.3 Carbon Filter).
2. Turn the vapor select valve a quarter turn clockwise to direct the vapors to the internal carbon
filter (see Figure 20).
Note: to access the valve you may need to remove a blanking plug.
Figure 20. Vapor select valve in the internal filter position
3. If required, disconnect the external system from the vapor outlet (see item 2 in Figure 18). 
You may leave the external system connected as the vapor valve effectively isolates this outlet.
4. Set the carbon filter threshold to a value appropriate for your instrument’s work load.
We recommend an initial threshold of 60 days with adjustments only if you are sure the carbon
filter is becoming saturated earlier or is still in good condition after this time (see 6.2.1
Instrument Settings).
If the carbon filter threshold has been overridden the carbon filter buttons will not be available.
Arrange for your service representative to cancel the override.
WARNING
When the vapor select valve is in the internal position, you must ensure the carbon filter is
correctly installed or potentially dangerous fumes will be released into the laboratory
environment.