Teledyne Car Video System 460L Benutzerhandbuch

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TELEDYNE INSTRUMENTS
 
 
Maintenance 
460L Instruction Manual 
46 
05228 Rev B 
 
PRINTED DOCUMENTS ARE UNCONTROLLED 
DCN 5164 
9.1.2. Mounting the Particulate Filter Externally 
In applications where the 460L is sampling ambient air at its own location and no inlet gas line is 
being used, the particulate filter can be mounted on the outside of the instrument  so that it may 
be replaced without turning off the monitor or opening the case. 
To mount the particulate filter outside the monitor enclosure: 
1.
 Turn the monitor off and ensure that the gas delivery line is not under pressure 
2.
 Purge the gas delivery line of ozone. 
3.
 Unscrew the pressure attached to the internal gas line (Fitting A in Figure 9-2) from the 
union fitting. 
4.
 Unscrew the union fitting from the fitting at the top of the filter (fitting B in Figure 9-2).  
Although the union fitting is no longer needed, save it in case you wish to return the 
particulate filter to the inside of the monitor at a later date. 
5.
 Unscrew the pressure fitting at the bottom of the filter (Fitting C in Figure 9-2) from the 
ozone inlet. 
6.
 Reattach the filter to the external side of the ozone inlet.  
7.
 Attach the internal gas line to the internal side of the ozone inlet using Fitting A. 
8.
 After reassembly, the gas line should be pressurized with oxygen or dry air and checked 
for leaks using a bubble solution. 
Pressure
Fitting A
Filter
Ozone Inlet
Pressure
Fitting B
Pressure
Fitting C
AFTER 
Ozone Inlet 
Filter
BEFORE 
Pressure 
Fitting A 
Union
Fitting 
Pressure 
Fitting C 
Pressure
Fitting B 
Inlet Gas Line 
No Inlet Gas Line
 
Figure 9-2  Changing the Particulate Filter