Coupling Attachments To The Vehicle; Tow Bar; Ballasting The Vehicle; Calculation Of The Minimum Rear Ballast For Front- Mounted Attachments - Kärcher MC 250 Manual De Uso

12.1 Coupling attachments to the vehicle

ATTENTION
Clean the plug and coupling with a lint-free cloth before
use.
Coupling connector
1
Coupling sleeve
2
Ring
3
1. Pull the ring of the coupling sleeve downwards and hold.
2. Press the coupling connector of the attachment hydrau-
lic hose into the coupling sleeve.
3. Release the coupling ring. Check that it is securely en-
gaged.
4. To decouple, pull the ring downwards, hold it and pull
out the hydraulic hose.

12.2 Tow bar

Note
For permissible support load and trailer load, see chapter .

12.3 Ballasting the vehicle

Note
The front axle of the vehicle must always be loaded with at
least 30% of the net weight of the vehicle, and the rear axle
must always be loaded with at least 30% of the net weight
of the vehicle.
Before purchasing the attachment, check that these re-
quirements are met by weighing the vehicle-attachment
combination.
The following data is required for determining the total
weight, the axle loads, the tyre loading capacity and the re-
quired minimum ballast:
 All weights in kg (weigh the vehicle if necessary)
 All dimensions in meters (m)
TL (kg) = Net weight of the vehicle
TV (kg) = Front axle load of the empty vehicle
TH (kg) = Rear axle load of the empty vehicle
GH (kg) = Rear ballast total weight
GV (kg) = Total weight of front attachment / front
ballast
a (m) = Distance between front attachment
(front ballast) centre of gravity and mid-
dle of front axle, max. = 0.86 m
b (m) = Wheelbase of the vehicle
c (m) = Distance between centre of rear axle
and rear ballast centre of gravity
* See chapter "Technical data"
** See operating instructions of the attachment
*** Measure
12.3.1Calculation of the minimum rear ballast for
front-mounted attachments
See the manufacturer's specifications for the value "x" or
use a value of x = 0.45 if no specifications are available.
1. Enter the result into the table.

12.3.2Calculation of the actual front axle load

1. If the necessary minimum front ballast weight (GV min)
is not reached with the front attachment (GV) then the
weight of the front attachment must be increased to the
minimum front ballast weight.
2. Enter the actual calculated permissible front axle load
and the permissible front axle load specified in the ma-
chine operating instructions into the table.

12.3.3Calculation of the actual total weight

1. If the necessary minimum rear ballast weight (GH min)
is not reached with the rear attachment (GH), then the
weight of the rear attachment must be increased to the
minimum rear ballast weight.

12.3.4Calculation of the actual rear axle load

1. Enter the result into the table.
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