13
1750 GM
English
3. Care and Maintenance
3.1 Monthly or as required
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Clean the filter on the detergent suction hose.
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Clean the high-pressure nozzle.
Using a needle, remove possible blockages from
the nozzle orifice. Afterwards, flush with water
from the front.
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Clean the strainer in the water inlet. It can easily
be pulled out with a pair of pliers.
3.2 Precautions in freezing
temperatures
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A unit that has not been completely drained may
be damaged by water freezing inside the com-
ponents. During the winter season, it is recom-
mended to store the unit in a heated area. If this
is not feasible, the unit should be completely
drained and flushed with antifreeze.
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Draining the unit
– Remove the water feed hose and high-
pressure hose from the unit.
– Allow the unit to operate for a maximum 1 mi-
nute until the pump and the lines have been
purged.
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Antifreeze
In the event that the unit is taken out of operation
for extended periods, flushing the unit with an
antifreeze is recommended. This practice also
achieves a certain degree of corrosion protection.
This chapter contains a few helpful hints which may
help you remedy small defects without requiring
further assistance. In all other cases please contact
the authorised customer service.
4.1
Unit does not run
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Perform the maintenance procedures on the en-
gine as outlined in the operating instructions is-
sued by the engine manufacturer.
4.2
Unit does not reach operating
pressure
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Adjust the spray lance for maximum working pres-
sure.
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Clean the water inlet strainer.
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Check the water supply volume.
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Check all supply lines feeding the pump for poss-
ible leaks or blockage.
4.3 Strong pressure fluctuations
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Clean the high-pressure nozzle. Remove dirt from
the nozzle bore using a pin and rinse out with
water.
4.4 Pump is leaking
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Three drops per minute are normal. In the event
that the exiting water volume is larger, contact the
authorised customer service.
4.5 No detergent is being drawn in
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Adjust the spray lance for the lowest working pres-
sure.
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Clean both the detergent suction hose and the
filter, and check the hose for leaks.
4. Troubleshooting
