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11 Maintenance 11
Maintenance program P36 with emission-free still rake out:
If you have an economy filter, you can only perform the emission-free still rake out if you have not
precoated with filter powder.
With each distillation pump out process, the sludge pump pumps out the entire contents of the
still.
The number 08 appears in the display when the maintenance program P36 starts.
After you press the START button again, the emission-free still rake out proceeds as follows:
The residues are heated up.
After a predefined temperature has been reached,
valve 142 opens and the sludge pump pumps out the residues.
After the predefined pump-out time has completed,
valve 142 closes and valves 143 and 143/1 open.
The sludge pump moves the residues from the still
into the disposal vessel.
The solvent-carrying air that is forced out of the vessel
is directed back into the still through valve
143/1 (gas displacement line).
Then the sludge pump, nozzle and pipelines are
rinsed with solvent.
The last step of the still maintenance is drying the
cage and reduction or adsorption (on machines
with Slimsorba).
When the liquid level in the disposal vessel reaches
the sensor-controlled overfill preventer, the sludge
pump stops automatically and all valves of the still
rake out system close.
The alarm display "E 0315" appears and the signal
sounds. After you delete the signal by pressing "C",
replace the full disposal vessel with an empty one.
Then you can start the maintenance program P36
703867-10-B
and continue with the emission-free still rake out.
Remarks on distillation:
Fill the still only up to the lower edge of the sight-glass.
When solvent containing water is distilled, the distillate becomes slightly cloudy as a result of the water
traces.
The distillation performance is reduced if you do not remove distillation residues from the still daily. This
also increases the risk of boiling over and increases the solvent consumption.
When operating with economic filters without filter powder, the distillation residue is liquid.
This means that there will not be an increase in the consumption of solvent involved if the distillation
equipment is used correctly.
If the detergent solution foams or boils over, you can use a defoamer.
Use approximately 0.1 % of the filling quantity.
If the distillation unit boils over, empty and clean the water separator (if necessary, distill the contents of
the clean tank). The distillation process cleans the condenser automatically.
P12
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