Bosch MUM52.. AU, Operating Instructions Manual, Page: 8 / 17

8 Robert Bosch Hausgeräte GmbH
Troubleshooting
The swivel arm must be engaged in every
operating position.
Initially try to eliminate the problem which
has occurred with the help of the following
information.
Fault
Appliance does not start.
Remedial action

Check the power supply.

Check the mains plug.

Check swivel arm. Correct position?
Engaged?

Screw on blender or bowl as far as possible.

Attach the blender cover and screw on as far
as possible.

Attach drive cover to unused drives.

The safety lock is active. Switch appliance to
0/off and then back to the required setting.
Fault
Appliance switches off during use.
The overload protection feature has been activa-
ted. Too much food was processed at one time.
Remedial action

Switch off the appliance.

Reduce processing quantity.
Do not exceed permitted maximum
quantities (see “Application examples”).
Fault
While the drive was running, the release button
was inadvertently pressed.
The swivel arm moves up. The drive switches off,
but does not stop in the tool change position.
Remedial action

Set rotary switch to 0/off .

Move swivel arm to position 1 .

Switch on appliance (setting 1).

Switch off appliance again.

Tool stops in tool change position.
Fault
Blender does not start working or stops during
use, the drive is “humming”. Blade is blocked.
Remedial action

Switch off the appliance and pull out
the mains plug.

Detach the blender and remove the
obstruction.

Re-attach the blender.

Switch on the appliance.
Application examples
Whipped cream
100–600 g

Whip cream with the whisk for 1½
to 4 minutes at setting 7 (4) depending on
the quantity and properties of the cream.
Egg white
1 to 8 egg whites

Beat egg white with the whisk for 4
to 6 minutes at setting 7 (4).
Sponge mixture
_~ëáÅ=êÉÅáéÉ
2 eggs
2–3 tbs. hot water
100 g sugar
1 packet of vanilla sugar
70 g flour
70 g cornflour
Baking powder if required

Beat the ingredients (except flour and
cornflour) with the whisk for approx.
4–6 minutes at setting 7 (4) until frothy.

Rotate switch to setting 1 (1) and spoon
in the sifted flour and cornflour within approx.
½ to 1 minute.
Maximum quantity: 2 x basic recipe
Cake mixture
_~ëáÅ=êÉÅáéÉ
3–4 eggs
200–250 g sugar
1 pinch of salt
1 packet of vanilla sugar or peel from ½ lemon
200–250 g butter or margarine (room
temperature)
500 g flour
en
oáëâ=çÑ=áåàìêó>
_ÉÑçêÉ=Éäáãáå~íáåÖ=~=Ñ~ìäíI=éìää=çìí=íÜÉ=ã~áåë=
éäìÖK
Important information for
MUM54../MUM56..
The On/Off display flashes if the appliance has
been operated incorrectly or the fuse has
tripped or the appliance is defective.
Important information
If the fault cannot be eliminated, please contact
customer service.