Note There are several parts included in the kit that will not be used in this
application.
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1. Locate and remove the access port stopper (Figure 1). Discard.
2. Unfasten the temperature sensor from the clip on the top duct. See
Figure 2. If the unit is equipped with the optional RH sensor, unfasten
it from its clip also.
3. Remove the HEPA filter by pulling it straight down. Discard the filter.
4. Remove the wingnuts securing the top duct to the chamber ceiling.
Carefully slide the duct down and off the temperature sensor (and RH
sensor, if applicable).
5. Remove the air sample
filter and tubing, and
discard. See Figure 3.
6. Remove the blower scroll
secured by four screws.
Retain the scroll and
screws.
Installation -
Release 1 through 3
2 Preventive Maintenance Kit 2270105
Figure 1. Back Corner of Chamber
Figure 2. Filter and Sensor Locations
Figure 3. Two Configurations
for Releases 1-3