Kranzle LX 2000 Operating Manual page 8

Functional details
Water and cleaning system
Water must be supplied to the high pressure pump under pressure or directly sucked
in out of a pressureless container. The water is then forced under pressure by the
high pressure pump to the lance. The high pressure jet is formed by the nozzle at
the end of the lance.
Environmental, refuse disposal and water protection regulations
must be observed!
Safety jet pipe with safety trigger gun
The high pressure cleaner can only be operated when the trigger of the safety
deactivation trigger gun's trigger is actuated. When the trigger is pulled, the
safety trigger gun opens. The liquid is then transported to the nozzle. The spray
pressure increases and quickly reaches the operating pressure. When the trigger is
released, the safety trigger gun closes and any further spraying of liquid from the
safety jet pipe is prevented. The stainless steel pressure gauge must show 0 bar.
The increase in pressure when the safety trigger gun is closed causes the pressure
control valve/safety valve to open. The motor is switched off by the pressure switch.
The HP pump remains switched on and continues to operate unpressurized via
the bypass. When thesafety trigger gun is opened, the pressure control valve/
safety valve closes, the motor is started and the high pressure pump resumes
pressure spraying from the safety jet pipe with the selected operating pressure.
The safety trigger gun is a safety device. Repairs should only be perfor-
med by qualified persons. Should replacement parts be required, use
only components authorized by the manufacturer.
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Functional details
Pressure control valve/safety valve
The pressure control valve/safety valve protects the high pressure cleaner from
a build up of excess pressure, and is designed not to permit an excess pressure
to be selected for operation. The limit nut on the handle is sealed with a spray
coating. The operating pressure and spray rate can be steplessly adjusted by
turning the handle.
Replacements, repairs, new adjustments and sealing should only
be performed by qualified persons.
Motor protection switch
Motor is protected against overload by means of a motor protection switch.
In case of motor overload or blocking, the motor of the high pressure cleaner
switches off automatically. If motor tends to switch off repeatedly, make sure
to detect appears. Make sure to detect and remedy the cause of the failure.
Replacements and inspection work should only be performed by qualified
persons when the high pressure cleaner is disconnected from the power
supply, i.e. with plug pulled out from the electrical socket.
Thermo valve
If HP pump is switched on and trigger gun with safety catch is not operated, the HP
pump continues operation and transports water in the circuit via the bypass valve.
This will heat up the water. For protecting the HP pump against inadmissibly high
temperatures, a thermo valve is installed in the bypass circuit which opens at 63
degrees and drains hot water at the bottom of the HP cleaner via a hose.
Pay attention to splash water when operating HP pump in bypass.
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