Symbols On The Display During Sweeping; Intended Use; Safety Information; Operation - Kärcher MC 250 Implements Manual

1.7.1 Symbols on the display during sweeping

The following symbols and warning indicators are shown
on the display when operating with the high-pressure
cleaner.
High-pressure cleaner is activated
High-pressure cleaner inactive

1.7.2 Intended use

Use the high-pressure cleaner only for the following activ-
ities:
 Cleaning with the high-pressure jet without detergent
(e.g. façades, park seats, garden paths).
 Only operate the high-pressure cleaner with the flat jet
nozzle provided.
 This high-pressure cleaner is intended and tested for
the exclusive use with the sweeper vacuum MC 250.
Pressure relief valve
When the water quantity is reduced via the pressure/quan-
tity control on the trigger gun, the overflow valve opens and
part of the water flows back to the suction side of the pump.
Safety valve
The safety valve opens when the permissible operating
pressure is exceeded and the water flows back to the suc-
tion side of the pump.

1.7.3 Safety information

Connection to a drinking water line
WARNING
Return flow of dirty water into the drinking water net-
work
Health risk
Observe the regulations of your water supply company.
According to applicable regulations, the device must never
be used with the drinking water network without a system
separator. Use a system separator from KÄRCHER or a
system separator as per EN 12729 Type BA. Water that
has flowed through a system separator is classified as un-
drinkable. Always connect the system separator to the wa-
ter supply and never directly to the water connection on the
device.

1.7.4 Operation

Before initial startup
WARNING
Risk of injury from high-pressure jet
Do not direct the high-pressure jet at persons, animals, live
electrical equipment or at the device itself.
Protect the device high-pressure cleaner frost.
ATTENTION
Environmental pollution through oil
Clean engines only at locations having an appropriate oil
separator.
Note
Only nozzles of the sizes listed in the technical data may
be used.
If you have not already done so:
1. Connect the high-pressure hose and spray lance.
2. Connect the water supply hose and open the stop cock
of the water inlet.
1. Check the water level and, if necessary, fill the fresh wa-
ter tank of the MC 250.
2. Open the stop cock of the water inlet.
3. Put travel direction lever in the NEUTRAL position - cen-
tre position and start the motor.
4. Remove the trigger gun and high-pressure hose from
storage.
5. Switch on the PTO work hydraulics.
Pressure washer on / off F1 button
1
High-pressure cleaner active / inactive display
2
6. Deactivate the seat contact switch (F4 button on the dis-
play).
7. Switch on the high-pressure cleaner in the display with
the F1 button.
The engine speed increases automatically.
High-pressure active (orange) appears in the display.
8. Unlock the trigger gun.
9. Pull the trigger on the trigger gun and commence clean-
ing.
Note
The high-pressure cleaner must be vented when first used
or when the water reservoir is empty:
10.Operate the high-pressure cleaner without the nozzle
until there is no more air in the system.
1. Close the trigger gun.
2. Switch off the high-pressure cleaner in the display with
the F1 button.
3. Switch off the work hydraulics.
4. Actuate the trigger gun until the device is depressurised.
5. Actuate the safety lever of the trigger gun to prevent the
gun trigger from being unintentionally triggered.
6. Fasten and secure the trigger gun with spray lance and
high-pressure hose in storage.

1.7.5 Care and service

1. Check all hydraulic hoses and connections for leaks.
2. Check the high-pressure hose for damage (danger of
bursting).
Immediately replace a damaged high-pressure hose.
3. Check the device (pump) for leaks.
3 drops of water per minute are permissible and can
leak out of the bottom of the appliance. Contact Custom-
er Service in the case of more serious leaks.
English
Operation
Shutting down
Each time before use
35