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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 8 appears in the display when 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.
703903-05-B
After a predefined temperature has been reached,
valve 42 opens and the
sludge pump pumps out the residues.
After the predefined pump-out time has completed,
valve 42 closes and valves 43 and 43/1 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 43/1 (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 maintenance
program P36 and continue with the emission-free
still rake out. Ball valve (1) is always open;
close it only when repairing the pump.
Remarks on distillation:
Fill the still only up to the lower edge of the sight-glass.
When solvent that contains 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 solvent consumption and the risk of boiling over.
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 cleans the condenser automatically.
P25/P30
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