8.5.2.1 Changing the desiccant
Figure 14. Changing desiccant-Dryspell Plus models 20 and 30
l Remove the dome nut and washer
l Remove the top chamber with the filter and controller
l Discard the tower gaskets (top)
l Remove the top diffuser screens
l Remove the tower pipe assembly (The bottom screen fits tightly in the bottom.)
l Discard the tower gaskets (bottom)
l Remove the old dessicant from the tower
l Using the rods passing through the towers, push the bottom diffusers to detach them from the towers
l Fill the desiccant tower with Activated alumina CD067A and then Molecular sieves CC447. Fix new top diffusers
l Reassemble the towers in the bottom chamber. Replace the discarded components with corresponding new parts.
Reassemble the top chamber and fasten with the dome nut
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