Note Several parts included in this kit are not used in this application. ▲
1. Remove the shelves and side duct sheets from
the interior of the unit.
2. Remove and discard the access port stopper.
See Figure 5.
3. Unfasten the temperature sensor from the
clip on the top duct. If the unit is equipped
with the optional RH sensor, unfasten it from
its clip. See Figure 4.
4. Remove the HEPA filter by pulling down on it. Discard the filter.
5. Remove the wingnuts securing the top duct to the chamber ceiling.
Carefully slide the top duct down and off the temperature sensor (and
RH sensor, if applicable).
6. Remove and discard the air sample filter and tubing. See Figure 6.
7. Remove the blower scroll by first pushing the black lever closest to you
toward the scroll. Then turn the scroll to the right to disengage it from
the blower scroll plate. Some manipulation may be required as the
alignment holes are keyhole-shaped. See Figure 6. Retain the scroll.
8. Pull down firmly to remove the blower wheel from the motor shaft.
Discard the wheel.
9. Remove the blower scroll plate by first pushing the black lever clip
toward the chamber ceiling. Then turn the scroll plate to the left to
disengage it from the alignment keyholes. See Figure 6.
Installation - Release 4
5Preventive Maintenance Kit 2270105
Figure 5. Back Corner of
Chamber
Figure 6. Air Sample Filter Location
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