Kärcher MC 50 Mode D'emploi page 51

7.1.1 Release parking brake
 Press the brake pedal all the way.
 Turn the lock toward the rear.
 Release the brake pedal.
7.1.2 Start the engine
 Remove your foot from the accelerator pedal.
 Set engine speed to MIN position.
 Press the brake pedal all the way down.
The indicator lamp for the emergency brake must be il-
luminated.
 With low exterior temperatures, turn the ignition key to
pre-heating setting for about 3 seconds.
 Turn the ignition key to "Start engine" and hold it there
until the engine starts up.
 Release the ignition key. The ignition key turns to posi-
tion "1", engine on.
 Release the brake pedal.
CAUTION
Risk of damage by overheating of the power transmission
and the brake. Do not drive appliance while brake is acti-
vated.
 After a cold start, let the appliance warm up while the
engine speed is set to MIN, so that the hydraulic oil can
reach operating temperature.
The pre-heating time depends on the ambient temper-
ature and can be read from the diagram below.
7.1.3 Driving
ATTENTION
The speed is reduced when you release the gas pedal; a
property that is different to passenger cars.
In transport mode, the speed reduction due to braking
when you let go of the gas pedal is lower than in work
mode.
 Raise the working machine.
 Raise the suction opening and the side-brushes (for
sweepers).
 Set engine speed to ECO.
 Press accelerator pedal down slowly.
 Control the driving direction with the steering wheel.
7.1.4 Stop
 Release the accelerator pedal or drive backwards for a
moment, the machine brakes automatically and stops.
Only use the brake pedal if the appliance does not stop
in spite of applying the above measures.
CAUTION
Risk of damage to the drive system. Use the brake only in
emergencies and as an emergency brake while the appli-
ance is not moving, not as an operational brake.
7.1.5 Driving over obstacles
WARNING
Risk of damage! Raise the side-brushes and the suction
opening before overtaking hurdles.
Obstacles up to 150 mm in height:
 Bypass the obstacles slowly and carefully at an angle
of 45°.
Obstacles more than 150 mm in height:
 Only drive over these obstacles using a suitable ramp.
Warning
Risk of damage! Ensure that the vehicle does not get stuck
up.
7.2 During sweeping operation
CAUTION
Do not sweep up packing strips, wire or similar objects as
this may choke up the suction canal.
To avoid damaging the floor, do not continue to operate
the sweeping machine in the same position.
NOTICE
To achieve an optimum cleaning result, the driving speed
should be adjusted to take specific situations into account.
During operation, the waste container should be emptied
at regular intervals.
 Start the engine and let it warm up.
 Set engine speed to ECO.
 Lever (18) at position A.
Suction port not locked
 Adjust the side brush speed.
 Press the lever (19) to the front.
Side brush sweeping is switched on.
 Pushbutton (7) Switch on work hydraulics Main PTO.
Suction turbine is running.
 When sweeping dry waste: Switch on switch (6) for irri-
gation of the side brush.
Switch on the water circulation system if needed (op-
tion).
 Go about further operation using the joystick; for more
on this, see chapter 5.10 "Joystick function".
7.2.1 Deflect large objects
Medium-sized objects (such as drink cans) can be suc-
tioned up by the appliance.
Large objects (such as branches) can be deflected to the
side by a brief reversal of the side brush rotation direction.
 Pull the lever (19) briefly backwards.
The direction of rotation of the side brush changes.
7.3 Restrict brush immersion depth
If soft brushes are used, it may become necessary to re-
strict their immersion depth too prevent excessive defor-
mation of the bristles during the sweeping process.
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