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10
Please note - important!
Lack of water
The following minimum quantity of water is necessary for a safe and problem-free
operation of the high-pressure cleaner: HD 9/80: 9 l/min, HD 12/130: 11,4 l/min
If the metered quantity of water is too small, you have to use a diffe-
rent water connection, guaranteeing the necessary output.
Lack of water leads to an accelerated wear of the joints (no gua-
rantee).
Water supply
Please pay attention to the regulations of your waterworks company. In
accordance with DIN EN 61770, the machine may not be directly
connected to the public drinking water supply lines. A brief connection
however is permissible according to DVGW (German Association for
Gas and Water Affairs) if a non-return valve with tube ventilator
(Kränzle order no. 41.016 4) is built into the water supply. Also indirect
connection to the public drinking water supply lines is permissible by way of free
emission in accordance with EN 61 770; e.g. by using a reservoir with a float valve.
Direct connection to a non-drinking water supply line is permissible.
Once the water has passed through the non-return valve, it is no longer
considered to be drinking water.
Lack of water occurs more often than you
probably believe. The more powerful a high
pressure cleaner is the greater is the dan-
ger that a lack of water occurs. If there is
only an insufficient amount of water availab-
le, cavitation arises inside the pump, which
is normally noticed too late or even not at
all.The pump will be destroyed.
Please check the available quantity of water
by filling a bucket with liter scale for 1/2
minute.
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