11
3.0 Connections
EN
3.1 Water connection
The water input is connected at the back of the
machine. The machine can be connected directly
to the mains water supply, or it can work as a self-
priming unit*).
This high pressure washer/cleaner is
only allowed to be connected with the
drinking watermains, when an ap-
propriate backfl ow preventer has been
installed, Type BA according to EN 1717.
If the back fl ow preventer hasn’t been supplied,
one can be ordered from your dealer. The length of
the hose between the backfl ow preventer and the
high pressure washer must be at least 6 metres
(min diameter 3/4 inch) to absorb possible pres-
sure peaks. Operation by suction (for example from
a rainwater vessel) is carried out without backfl ow
preventer. Contact your dealer for suction set
recommendations.
As soon as water has fl own through the BA valve,
this water is not considered to be drinking water
any more.
If there is sand or other impurities in the water, it is
advisable to provide an external water fi lter in ad-
dition to the internal fi lter situated behind the quick
coupling.
For connection of air motor, see section 9.0.
*) With cold w
ater (up to 8°C) the cleaner will
operate satisfactorily with up to a 5 metre diffe-
rence of level between cleaner and water supply.
The pump and the inlet hose must be connected to
the water supply before starting up. When working
with hot water (85°C) the cleaner must be below or
on a level with the point of water supply. Working
with hot water and connected to high pressure
hoses longer than 10 m or inlet hoses shorter
than 6 m, the cleaner must be equipped with a
fl oat chamber. The same applies if the outlet of the
cleaner is connected to a tube system.
4.0 Standard equipment
The cleaner is delivered with a Tornado Plus lance
and Ergo 2000 spray handle together with high
pressure hose as standard equipment. Nozzle size:
0640. Do
not
replace with nozzles of a smaller
diameter. The maximum working pressure and
temperature are printed on the standard high pres-
sure hose. Only use Nilfi sk-ALTO high pressure
hoses. In case of damage, arrange for Nilfi sk-ALTO
service engineers to repair it. Do not attempt to
repair it yourself.
The thrust on the nozzle is for:
2603KLU
31N
(3.2 kp)
As the thrust forms an angle with the spray lance,
the spray handle is subject to torque.
As standard equipment the cleaner is delivered
with chemical injector for addition of detergents.