Kärcher BD 70/75 W Classic Bp Manual De Instrucciones página 21

Care and maintenance
DANGER
Risk of injury!
The device may start moving unexpectedly and cause injury.
Turn the key-operated switch to "0" and remove the key before
performing any work on the device.
Pull out the charger mains plug.
 Drain and dispose of the waste water and fresh water.
Safety inspection/maintenance contract
You can agree on regular safety inspections or close a mainte-
nance contract with your dealer. Please seek advice on this.
Maintenance intervals
Each time after use
ATTENTION
Risk of damage!
Risk of damage to the device due to improper cleaning.
Do not spray the device with water and do not use aggressive de-
tergents.
A detailed description of the individual maintenance work is pro-
vided in Chapter Maintenance work.
 Drain the waste water.
 Rinse the waste water tank with clear water.
 Clean the exterior of the device using a damp cloth, wetted
with a mild washing lye.
 Check the fluff filter and clean if required.
 Clean the coarse dirt filter.
 Clean the coarse dirt filter.
 Only BR variants: Remove and empty the coarse dirt recep-
tacle.
 Only BR variants: Clean the water distribution channel.
 Clean the suction lips, check for wear and adjust the height or
replace if necessary.
 Check the disc brushes for wear and replace if necessary.
 Charge the battery.
 If the charging state of the battery is below 50%, charge the
battery fully and without interruption.
 If the charging state of the battery is above 50%, only re-
charge the battery if the entire operating duration will be re-
quired when next used.
 When used regularly, charge the battery fully and without in-
terruption at least once a week.
A detailed description of the individual maintenance work is pro-
vided in Chapter Maintenance work.
1. Drain the fresh water tank and flush out deposits.
2. Clean the fresh water filter.
3. Clean the float and fluff filter.
4. Check battery poles for oxidation, brush off if necessary. Make
sure the connection cables are firmly in place.
5. Clean the seals between the waste water tank and the cover,
check for leaks and replace if necessary.
6. Check the acid density of the cells if the batteries are not main-
tenance-free.
7. If the device is not used for a longer period of time, shut down
the device when the batteries are fully charged. Fully charge
the battery at least once a month.
 Have the prescribed inspection performed by Customer Ser-
vice.
Maintenance work
Turn over or replace the worn suction lips
The suction lips must be turned over or replace when they have
worn down to the wear mark.
Illustration R
Weekly
Monthly
Annually
Wear mark
1
Suction lip
2
1. Remove the suction bar.
2. Unscrew the star handles.
Illustration S
3. Pull off the plastic parts.
4. Pull off the suction lips.
5. Push in the turned over or new suction lips.
6. Push on the plastic parts.
7. Screw in and tighten the star handles.
Cleaning the fresh water filter
1. Drain the fresh water (see Chapter Draining fresh water).
2. Unscrew the fresh water tank lock.
Illustration U
Fresh water tank lock
1
Fresh water filter
2
3. Pull out the fresh water filter and rinse with clean water.
4. Insert the fresh water filter.
5. Fit the fresh water tank lock.
Note: Take care to ensure that the hose connection in the
fresh water tank cap is positioned at the lowest point in the
tank after screwing the cap in place.
Cleaning the coarse dirt filter
1. Open the waste water tank cover.
Illustration T
Coarse dirt filter
1
2. Pull the coarse dirt filter upwards and off.
3. Rinse off the coarse dirt filter under running water.
4. Reinsert the coarse dirt filter into the waste water tank.
Clean the float and fluff filter
1. Open the waste water tank cover.
Illustration V
Latching hooks
1
Float
2
Fluff filter
3
Float housing
4
2. Release the latching hooks.
3. Pull the float housing downwards and off.
4. Remove the float from the float housing and clean it.
5. Remove the fluff filter and clean it.
6. Assemble all parts in the reverse order.
Replacing the disc brushes
1. Raise the cleaning head.
2. Press the brush replacement pedal down, beyond the zone of
resistance.
Illustration W
Brush replacement pedal
1
3. Pull the 1st disc brush sideways and out from underneath the
cleaning head.
4. Hold the new disc brush under the cleaning head, then press
upwards and latch it into position.
5. Repeat the procedure for the 2nd disc brush.
Replacing the roller brushes
1. Raise the cleaning head.
2. Pull out the brush replacement handle.
Illustration Y
Brush replacement handle
1
Bearing cover with squeegee blade
2
Roller brush
3
3. Remove the bearing cover including the squeegee blade.
4. Pull out the roller brush.
5. Fit the new roller brush and centre it on the driver.
6. Install the bearing cover with the squeegee blade.
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