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Instrument Maintenance Model T101 Instruction Manual
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8.3. MAINTENANCE PROCEDURES
The following procedures need to be performed regularly as part of the standard
maintenance of the Model T101.
8.3.1. CHANGING THE SAMPLE PARTICULATE FILTER
The particulate filter should be inspected often for signs of plugging or excess dirt. It
should be replaced according to the service interval in Table 8-1 even without obvious
signs of dirt. Filters with 1 and 5 µm pore size can clog up while retaining a clean look.
We recommend handling the filter and the wetted surfaces of the filter housing with
gloves and tweezers. Do not touch any part of the housing, filter element, PTFE
retaining ring, glass cover and the O-ring with bare hands.
To change the filter according to the service interval in Table 8-1:
1. Turn OFF the analyzer to prevent drawing debris into the sample line.
2. Open the T101’s hinged front panel and unscrew the knurled retaining
ring of the filter assembly.
Figure 8-1. Sample Particulate Filter Assembly
3. Carefully remove the retaining ring, glass window, PTFE O-ring and filter
element.
4. Replace the filter element, carefully centering it in the bottom of the
holder.
5. Re-install the PTFE O-ring with the notches facing up, the glass cover,
then screw on the hold-down ring and hand-tighten the assembly.
Inspect the (visible) seal between the edge of the glass window and the
O-ring to assure proper gas tightness.
6. Re-start the analyzer.
07266B DCN6485