Sensidyne Gilian BDX-II, Operation & Service Manual

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Gilian ®
BDX II ABATEMENT AIR SAMPLING PUMP
Document No. 801863M (Rev A) 17
Figure 3.2
Internal Filter Maintenance
3.3 FILTER MAINTENANCE
The BDX II internal filter should be
changed whenever it becomes clogged or
dirty. The condition of the internal filter is
visible through the clear window on the
filter assembly.
To change the BDX II filter, refer to Figure
3.2 and follow the steps below.
1) Make certain the pump is turned off.
2) Remove any tubing attached to the
pump.
3) Remove the 4 housing screws on the
filter housing. Remove the filter hous-
ing from the unit.
4) Remove the filter O-ring from the filter
housing. Remove and discard the old
filter.
CENTER O-RING (Orange)
FILTER O-RING (Black)
FILTER
FILTER
HOUSING
HOUSING
SCREWS (4)
5) Insert a new filter in the filter housing.
Make certain the filter is properly cen-
tered and flat.
6) Insert the filter O-ring in the filter
housing. Make certain the O-ring is
properly seated.
7) Reinstall the center O-ring (orange) in
its place on the pump. Make certain it
is properly seated.
8) Reinstall the filter assembly back on
the unit.
9) Insert and tighten the 4 screws.
Repeat this procedure on a periodic basis
or whenever the filter becomes clogged or
dirty.