Maintenance and Service 8-7
4. Remove the tubing from the barbed fitting at the back of the
filter.
5. Unscrew the filter and separate it from the threaded bulkhead
panel fitting. Discard the old filter after removing fittings at both
ends.
6. Find in the accessory kit the new exhaust filter (P/N 1602094)
with the stainless steel fitting and the elbow plastic fitting.
7. Reinstall the new exhaust filter, by screwing the filter housing
onto the bulkhead fitting and connect the barbed fitting with
the corresponding tubing.
Bypass Filter
The Bypass air filter is identified in Figure 8-2 and is referenced in
the schematic,
Figure 5-1. This filter is used to protect a variable
orifice controlling flow at a nominal 1.2 L/min. The Bypass filter is
used during the high-flow operation mode. This filter is generally
not replaced unless the instrument sample flow is compromised as
the filter loads.
Figure 8-2
Replacing the Bypass Air Filter
1. Read warnings and cautions at the beginning of this chapter.
2. Unplug the instrument and remove the instrument cover by
loosening the six side panel screws (they don’t have to be fully
removed). Lift the cover up. Do not remove the screws holding
the clear butanol reservoir cover.
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