8.5.1.1 Changing the desiccant
Figure 9. Changing desiccant-Dryspell Plus model 10
l Using a screwdriver, disconnect the controller wire from the exhaust solenoid valve and prefilter solenoid valve
l Remove the dome nuts and M8 washers
l Remove the top chamber with the filter and controller
l Discard the O-ring (55.4 mm * 4 mm)
l Discard the top diffuser screens (two)
l Remove the tower assembly. (The bottom screen fits tightly in the bottom assembly)
l Discard the O-ring (55.4 mm * 4 mm).
l Detach the bottom diffusers by pushing them using the rod passing through the tower. Discard the bottom diffusers.
l Empty the desiccant in the tower.
l Fill the desiccant tower with Activated alumina CD067A and then Molecular sieves CC447
l Replace the discarded parts with corresponding new components. Reassemble all the parts. Tighten the screws and
dome nuts
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