300781 • 1/2019 • H.S.
42 of 70
Operating Instruction
High Pressure Cleaner cold water, mobile
Series 3x3
5 Commissioning
5.2
Establishing the water connection
CAUTION
Do not operate the device with contaminated or too hot water.
Operate the high pressure cleaner only with clear and unpolluted water.
The water inlet temperature to the device may be as follows
●
max. 45 °C for KD623, KD823 and KD940
●
max. 80 °C for KD940-F.
Dirty or too hot water can damage the high pressure cleaner.
General Information
For the device version Standard, the manufacturer recommends
equipping the connection fitting of the water supply network or the
adapter of the water connection hose with a filer.
In case of suction operation from a water reservoir, provide a filter in
the water inlet.
The building water connection (tap water network) for the water supply
of the high pressure cleaner must be designed for trouble-free constant
operation (see Section 3.14, Technical Data).
The regulations of the relevant water supply company must be observed!
According to EN 61 770, the system must not be directly connected to the
public drinking water supply. However, according to DVGW (Deutscher
Verband des Gas- und Wasserfaches - German Gas and Water Association),
short-term connection is permissible if a backflow preventer with a pipe
ventilator is installed in the supply line.
Water after the backflow preventer is no longer considered drinking water.
An indirect connection to the public drinking water supply is also
permissible by means of a free outlet. The water supply must comply
with EN 61 770, e.g. by using a tank with a float valve. Direct connection to
a pipe network not intended for drinking water supply is permissible.
The environmental, waste and water protection regulations must be
observed by the system operator!
Equip the water connection of the tap water network with a shut-off
valve.
Connect the high pressure cleaner to the water connection via the water
supply hose.
