Kärcher BD 70/75 W Classic Bp Manual De Instrucciones página 13

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
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.
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.
Malfunction
The device cannot be started 1. Turn the key-operated switch to "1".
The water volume is insuffi-
cient
Troubleshooting guide
Rectification
2. Unlock the emergency stop button on the control panel by turning it. (Note: not all device versions
are equipped with an emergency stop button)
3. Actuate the safety switch.
4. Insert the battery plug.
5. Check the battery and charge if necessary.
6. Check that the battery terminals are correctly connected.
1. Check the fresh water filling level and fill the tank if necessary.
2. Increase the water volume at the water volume regulating knob.
3. Pull off the water distribution strip on the cleaning head and clean the water channel (BR variant
only).
4. Clean the fresh water filter.
5. Check the hoses for clogging and clean if necessary.
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.
Note
Make sure the roller brush sits on the mounting mandrel and not
underneath.
7. Pivot the brush replacement handle upwards and latch it into
place.
8. Repeat the entire procedure at the other side.
Cleaning the water distribution strip
Illustration X
Water distribution strip
1
Unlocking button
2
1. Press lock in the direction of the arrow and hold it there.
2. Pivot water distribution strip forward.
3. Pull out water distribution strip lengthways.
4. Clean the water distribution strip.
5. Fit water distribution strip back into the cleaning head and
snap the lock into place.
Pull out the charger mains plug.
 Drain and dispose of the waste water and fresh water.
 Contact Customer Service in the case of malfunctions that
cannot be corrected using this table.
English 13