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8.6
Maintenance
Dripping and minor leaks cannot be avoided with
urea solution. This leads to build-up of crystallised
white urea. Clean the unit, especially the delivery
nozzle, with lukewarm water if necessary. While
doing so, do not allow drinking water to get into the
container, as it does not meet the purity require-
ments.
Only demineralised water can be used to clean the
inside of the container.
8.6.1
Troubleshooting
(For troubleshooting at the pump, see operating instructions of the pump, section 10)
Fault
Delivery hose is leaking
The delivery nozzle does not
switch off automatically or
switches off too late
Pump is running, but little
output
White crystals or liquid in the
delivery nozzle drip tray
8.6.2
Cleaning the filter
8 Hose connection
9 Filter seal
1. Unscrew hose connection 8
2. Remove, clean and reinsert filter seal 9
3. Mount hose connection 8
Possible cause
Hose clamp loose
Cracks in the hose
The delivery spout is not cor-
rectly inserted into the refilling
interface
Hoses are blocked or kinked
Air bubbles in the liquid
Filter clogged
Escaped liquid (dripping
liquid)
Maintenance of the pump, see operating instruc-
tions of the pump, section 9.
The container and the hoses should be visually in-
spected regularly, at least once a month, for dam-
age and leaks. Defective parts must be replaced.
Solution
Re-tighten hose clamp with a screw-
driver.
Shorten the delivery hose up to the leak-
ing point or replace it completely.
Fully insert the delivery spout into the
refilling interface
Check hoses
Leave the tank to stand for a few
minutes
Clean filter (see section 8.6.2)
Clean the delivery nozzle drip tray.
GB
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