Instruction Book
9829 2115 69 96
Replacing desiccant
Do NOT overfill dryer.
Always check the state of the strainers inside the vessels, replace them if
necessary
When replacing desiccant, make sure that the desiccant is disposed of
according to the local regulations.
When replacing the desiccant, never use an ejector or similar equipment
as this might shatter the beads. The beads must be gravity-fed into the
tower.
After replacing the drying medium, the amount of dust released can
increase. Therefore, it is recommended to replace the dust filter
downstream of the dryer one week after replacing the desiccant
Emptying
1. Let the dryer program run to the pressure equalization step.
2. Stop the dryer when the pressure is equalized in both towers.
3. Shut off the power supply.
4. Isolate the dryer from the air net by closing the air inlet and outlet valves.
Depressurize the towers.
5. Install a suitable collector underneath the plug for emptying.
6. Remove the plugs or flanges and let the desiccant pour out into the collector. A
vacuum cleaner may be used to speed up the process and control dust.
Filling
1. Once the vessels are empty, refit the plugs or flanges.
2. Fit a large funnel to the filling hole of one of the drying towers; the size of the narrow part
should be 35-40 mm/1.4-1.6 in.
3. Gently pour the correct amount of desiccant (see section Dryer data) into the tower. Use
a vacuum cleaner to control dust escaping from the filling hole.
4. Repeat steps 2 and 3 for the other tower; the amounts of desiccant must be equal in
both towers.
5. Do not use any mechanical or pneumatic means for filling; this may destroy the
desiccant.
6. Refit the filling plugs or flanges (1). The dryer is now ready to be started (see section
Starting for starting instructions).
Desiccant
See section 10 Technical Data for desiccant quantities.
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