Ordinance and successfully
subjected to a pressure test.
Operation
Do not damage the mains power
lead (e.g. by driving over it,
pulling or crushing it).
Remove the plug from the plug
socket directly at the plug (not by
pulling or tearing at
the mains power lead).
Maintenace and repair
CAUTION!
Always remove the plug from
the mains plug socket before
cleaning or carrying out
maintenance work on the
cleaner.
Carry out only the maintenance
operations described in the
operating instructions.
Use only original Alto spare
parts. Do not make any technical
modifications to the
high-pressure cleaner.
CAUTION!
High-pressure hoses, fittings and
couplings are important for the
safety of the cleaner. Use only
high-pressure parts approved by
the manufacturer!
CAUTION!
Failure to observe these
instructions can endanger your
safety.
Please contact the Alto service
department or an authorised
specialist work-shop for all other
maintenance or repair work!
Electrical equipment
Check the rated voltage of the
high-pressure cleaner before
connecting it to the mains power
supply. Ensure that the voltage
specified on the rating plate
26
corresponds to the local mains
supply voltage.
Cleaners intended for
commercial use must be
equipped with a mains power
lead type H 07 RN-F by a
qualified electrician.
The mains power lead must not
differ from the version specified
by the manufacturer and may
only be changed by an
electrician.
If your 3-phase cleaner was
supplied without a plug, have it
fitted with a suitable 3-phase plug
with protective conductor contact
by an electrician.
The mains power lead must not
differ from that specified by the
manufacturer.
We strongly recommend that the
power supply to the high-
pressure cleaner be connected
via a residual-current circuit
breaker which interrupts the
power supply either if the leakage
current to earth exceeds 30 mA
for 30 ms or which contains an
earth testing circuit.
If an extension lead is used,
please observe the minimum
cross-section of the lead:
Lead length
Cross section
m
mm²
bis 20
1.5
20 bis 50
2.5
If an extension lead is used, all
live parts (plug, cable, plug
socket) must be located so that
the protection class „watertight"
is ensured. This can also be
achieved by protecting the lead.
CAUTION!
Unsuitable extension leads can
represent a source of danger.
CAUTION!
Never spray electrical equipment
with water:
Danger for persons, danger of
short-circuit!
The cleaner may only be
connected to a correctly installed
plug socket.
Testing
The cleaner conforms to the
„Guidelines for Liquid Spray Jet
Devices". The high-
pressure cleaner must be
subjected to a safety examination
in accordance with the
„Accident Prevention Regulations
for Working with Liquid Spray Jet
Devices" as required, but at least
every 12 months, by an
authorised inspector.
After all repairs or modifications
to electrical equipment, the
protective conductor
resistance, the insulation
resistance and the leakage
current must be measured.
Furthermore, a visual inspection
of the mains power lead, a
voltage and current
measurement and a function test
must be carried out. Our after-
sales service
technicians are at your disposal
as authorised inspectors.
The complete „Accident
Prevention Regulations for
Working with Liquid Spray Jet
Devices" are available from the
Carl Heymanns Verlag KG,
Luxemburger Strasse
449, 50939 Cologne or from the
appropriate association of
employers' liability insurances.
Safety device
Unacceptably high pressure is
fed back without residual
pressure via a bypass line into
the intake line of the pump when
the safety device is tripped. The
safety device is set and sealed at
the factory and must not be
adjusted.