Kärcher MC 250 Implements Mode D'emploi page 45

(A) 3rd brush rotary speed selection (front brush)
(B) Sweeping brush rotary speed selection
(C) Engine speed
Press to adjust the values
Note
The suction performance depends on the set engine
speed.
● 1400 rpm light waste
● 1550 rpm normal soiling
● 1700 rpm strong, heavy soiling
● 2000 rpm strong, heavy soiling (weed brush)
(D) Pressure relief of sweeping brush
(E) Pressure relief of 3rd brush (front brush)
(F) Save button
Press to save adjusted values or programs
(G) Rotary knob
Press to change the adjusted values
2.4.6 Using the weed brush
The front brush must be secured in the desired position
when using the device as a weed brush.
Three positions are possible.
Travel direction
1
Right position
2
Front position
3
Left position
4
1. Secure the desired working position with bolts and
spring pins. See chapter 2.4.7 Transport lock.
2. Press the Change of rotation direction button when
working in the Left position.
2.4.7 Transport lock
The front brush must be secured when driving on public
roads (transport journeys).
Bolt
1
Spring pin
2
1. Move the front brush carriage all the way to the left.
2. Secure the front brush in the corresponding position us-
ing a pin and spring pin.
2.4.8 Care work
Further information can be found in the operating instruc-
tions for the vehicle.
Maintenance and care of the sweeping unit
1 Check the front brush and sweeping brush for tangled
cords and straps and remove as necessary.
2 Keep the hydraulic connections clean and check for
leaks once a week.
3 Check the front brush and sweeping brush for wear and
tear and replace if necessary.
Maintenance and care of the bearings/linear unit
CAUTION
Malfunction or risk of damage
The bearing units are self-lubricating dry bearings and
must never be lubricated with any lubricant.
Brake cleaners, lubricants or other cleaners can corrode
and destroy the bearing foil. Check the bearing foil for wear
and damage and replace if necessary.
1 The existing lubrication points (grease nipples) are la-
belled.
Lubricate daily with multi-purpose grease.
2 Clean the entire linear unit with water or brine. Cleaning
with a high pressure cleaner is not a problem.
Maintenance and care of the chain
ATTENTION
Notes on lubricating the chain
When lubricating the chain, make sure that no lubricant
gets onto the rails of the linear unit. Should this happen
due to carelessness, they must be cleaned and free of
grease before initial startup.
Never use stains or acids to clean the chain.
1 Inspect the chain at least once a month. During the in-
spection, clean the chain, tension the chain drive and lu-
bricate it.
2 The chains can be cleaned with rags or brushes. Stub-
born dirt can be loosened with petroleum or benzine.
Apply new, suitable corrosion protection immediately af-
ter using grease-dissolving media.
3 The chain drive may only be tensioned by Kärcher Ser-
vice.
4 Regular lubrication extends the service life. Lubricate
the chain with relubricant VP8 FoodPlus Spay from
IWIS.
Note that the lubricant must get into the chain joint. This
means that it has to get between the protective roller
and the bushing, and also between the inner and outer
plates to the pins and bushing
5 If you notice a lack of lubrication in the form of increased
noise, stiff joints or fretting corrosion in the joints, we
recommend the following procedure.
Clean the chain with a very low viscosity oil. This flushes
fretting corrosion, old lubricant and other dirt from the
joint. When the chain has been cleaned, lubricate it with
a suitable lubricant as described above.
English 45