Instruction book
9829 2151 14
85
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 (To be done in Maintenance Mode only)
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
35-40mm/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 Technical Data for desiccant quantities.
Summary of Contents for QHD750
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Page 11: ...Instruction book 9829 2151 14 11 Do not overfill the dryer when replacing desiccant...
Page 14: ...Instruction book 14 9829 2151 14 Back view of QHD750 Front view of QHD900...
Page 15: ...Instruction book 9829 2151 14 15 Back view of QHD900 Front view of QHD1100...
Page 16: ...Instruction book 16 9829 2151 14 Back view of QHD1100 Front view of QHD1370...
Page 17: ...Instruction book 9829 2151 14 17 Back view of QHD1370 Front view of QHD1800...
Page 18: ...Instruction book 18 9829 2151 14 Back view of QHD1800 Front view of QHD2300...
Page 19: ...Instruction book 9829 2151 14 19 Back view of QHD2300 Front view of QHD2800...
Page 20: ...Instruction book 20 9829 2151 14 Back view of QHD2800 Front view of QHD3600...
Page 98: ...Instruction book 98 9829 2151 14 Appendix 1 Service diagram...
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