5
The cleaner can be used in
zones classifi ed as ZONE 2.
Important!
Never use the
machine in an environment
where there could be a dan-
ger of explosion (according to
EN-50014).
Important!
When the system
has been in operation and
thereafter stopped, there might
still be a working pressure in
the pipeline and high pressure
hoses. Therefore you should
pay special attention to the fol-
lowing:
• Never dismount the high
pressure hose from the
machine during operation.
Disconnect the machine,
close the shut-off cock and
relieve the high pressure
hose of pressure prior to
dismounting.
• Never dismount the high
pressure hose from the out-
let point before it has been
securely closed and the high
pressure hose has been
relieved of pressure.
• Prior to any service inter-
ference in the machine it
should be disconnected and
the system relieved of pres-
sure by activating the trigger
of the spray handle.
Repair and Maintenance
Only carry through the mainte-
nance operations described in
the operating instructions. Only
use original Nilfi sk-ALTO spare
parts.
Do NOT make any technical
modifi cations to the high pres-
sure hot water washer.
Warning!
High pressure hoses,
nozzles and couplings are
important for the safety when
operating the machine. Only
use the high pressure hoses,
nozzles and couplings pre-
scribed by Nilfi sk-ALTO!
For major repairs, please con-
tact your nearest Nilfi sk-ALTO
service organisation.
Mains power connection
This product is intended for
stationary installation only
and is supplied without a
power cord! Only let an au-
thorized electrician connect
the machine to the mains
supply !
The following points must be
observed:
• Check that the voltage
stated on the data plate
corresponds to your mains
voltage.
• Make sure that the power
cord contains the right
number of wires (including
ground wire) and that each
wire has the right dimen-
sions to carry the load (am-
perage) stated on the data
plate of the machine.
• Make sure that the instal-
lation (cables, connection
points and fuses) is correctly
dimensioned for the load of
the machine - refer to the
data plate of the machine.
If not required by local leg-
islation, we strongly recom-
mend you to connect the
machine to a power source
with a Residual Current De-
vice (RCD) which will discon-
nect the power supply if the
leakage current exceeds 30
mA for 20 milli seconds !
See section "
3.5 Mains power
connection
" for further instruc-
tions.
Only let a qualifi ed electrician
maintain the electric installation.
Safety Devices
Safety Valve
The pressure side of the high
pressure pump is fi tted with a
safety valve. This valve leads
the water back to the suction
side of the pump when the
spray handle is closed or if a
nozzle is blocked.
The safety valve is adjusted
and sealed by the producer.
THIS ADJUSTMENT MUST
NOT BE CHANGED !
Machine protection
The machine features an over-
current protection and built-in
thermal protection of the motor.
In the event of increased power
consumption (maloperation)
and in the event of excessive
motor temperature (obstructed
ventilation etc.), the entire
machine will automatically be
disconnected from the mains
supply.
Short circuit protection
The machine is equipped with
a short-circuit protection. In the
event of short-circuits in the
machine, the protective device
will disconnect the entire ma-
chine from the mains supply.
