Robot Coupe R23 Parts List

• R 23

• R 30

• R 45

• R 60

P. O. Box 16625, Jackson, MS 39236-6625

280 South Perkins St., Ridgeland, MS 39157

e-mail: [e-mail] - website: www.robotcoupeusa.com - Phone : [phone]

WARNING: In order to limit accidents such as electric shocks, personal injury or fire, and in order to limit material damage due to
misuse of the appliance, please read these instructions carefully and follow them strictly. Reading the operating instructions will
help you get to know your appliance and enable you to use the equipment correctly. The operation manual should be kept within
easy access to all users for reference and should be read completely by all first time users of the machine.

IMPORTANT WARNING

UNPACKING

• Carefully remove the equipment from the packaging
and take out all the boxes or packets containing
attachments or specific items.

•WARNING-some of the parts are very sharp e. g.
blades … etc.

INSTALLATION

•Install your machine on a stable solid base.

CONNECTION

•Always check that your power supply corresponds
to that indicated on the serial number plate and that
it is properly sized.

HANDLING

•Always wear cut-resistant gloves when handling
the cutting blades.

ASSEMBLY PROCEDURES

• Follow the various assembly procedures carefully
(see page 7) and make sure that all the attachments
are correctly positioned.

USE

• Do not open the bowl lid until the blade have
come to a complete stop.

• Never tamper with or defeat the purpose of the
locking and safety systems.

• Never put a hand or nonfood object into the
bowl.

• Do not overload the machine.

• The blades are sharp. Wear cut-resistant gloves
when handling the blades.

CLEANING

• Always unplug your appliance before cleaning.

• Always clean the appliance and attachments at
the end of each use.

• For parts made of aluminum alloys, use cleaning
detergents suitable for aluminum. Presently, there
are no aluminum alloys on the surface of the
machine.

• Do not spray or pressure-wash the machine.

• For plastic parts, do not use detergents that are
too alkaline (i.e., containing too much caustic soda
or ammonia…).

MAINTENANCE

• Always unplug the appliance before servicing.

• Check the seals regularly and ensure that the
safety devices are in good working order.

• It is particularly important to maintain and check
the attachments since certain products contain cor­rosive agents e.g. citric acid.

• NOTICE

: Never operate the appliance if the
power cord or plug has been damaged. If the
machine fails to operate as described in this
manual, or if the machine malfunctions in any way,
remove the machine from use and have it serviced.
Additionally, discard all food processed at the time
of the malfunction.

•Contact your local Authorized Service Agency if
something appears to be wrong.

KEEP THESE INSTRUCTIONS

IN A SAFE PLACE

W ARNING

1

ENGLISH

FRANÇAIS

ESPAÑOL

OPERATING INSTRUCTIONS

MANUAL DE INSTRUCCIÓN

NOTICE D’INSTRUCTION

We reserve the right to alter at any time without notice the technical specifications of this appliance.
© All rights reserved for all countries by : ROBOT-COUPE

S.N.C

.

Nos reservamos el derecho de modificar en todo momento y sin previo aviso las características técnicas de este aparato.
© Todos los derechos para cada pais reservados por: ROBOT-COUPE

S.N.C

.

Nous nous réservons le droit de modifier à tout moment et sans préavis les caractéristiques techniques de cet appareil.
© Tous droits réservés pour tous pays par : ROBOT-COUPE

S.N.C

.

3

ENGLISH

SUMMARY

WARRANTY
IMPORTANT WARNING
INTRODUCING THE NEW VERTICAL

CUTTER-MIXER R23 / R30 / R45 / R60
SWITCHING ON THE MACHINE

• Advice on electrical connections

• Control panel

• Safety indicator lights

ASSEMBLY
HELPFUL TIPS

• Emptying the bowl

• Blade assembly

MAXIMUM PROCESSING CAPACITIES
FITTING AND USING THE BLADE ASSEMBLY

• Fitting the 2-blade assembly

• fitting the 3-blade assembly

OPERATING INSTRUCTIONS FOR THE
VACUUM KIT R-VAC

®

ACCESSORY

• Lid wiper

OPTIONS

• Coarse serrated blades

• Fine serrated blades

• Wheels

EXAMPLES OF USE
CLEANING
MAINTENANCE

• Blades

• Shaft seals

• Replacement of motor shaft seal

• Bowl seal

• Dismantling the blade assembly

• Lid seal

TECHNICAL SPECIFICATIONS

• Bowl capacities

• Weight

• Dimensions

• Installation

• Noise level

• Electrical data

SAFETY
TECHNICAL DATA

(page 45)

• Before Starting

• Exploded views

• Electrical and wiring diagrams

4

THE FOLLOWING ARE NOT COVE­RED BY THE ROBOT COUPE U.S.A.
INC LIMITED WARRANTY:

1 -

Damage caused by abuse, misuse, drop­ping, or other similar damage caused by
or resulting from failure to follow assembly, ope­rating, cleaning, user maintenance or storage
instructions.

2 - Labor to sharpen and/or replacements for

blades that have become blunt, chipped or worn
after a normal or excessive period of use.

3 - Materials or labor to replace or repair scrat-

ched, stained, chipped, pitted, dented or discolo­red surfaces, blades, knives, attachments or
accessories.

4 - Any alteration, addition, or repair that has

not been carried out by the company or an
approved service agency.

5 - Transportation of the appliance to or from

an approved service agency.

6 - Labor charges to install or test new

attachments or accessories (i.e., bowls, plates,
blades, attachments), which have been replaced
for any reason.

7 - The cost of changing direction-of-rotation of

three-phase electric motors (Installer is
responsible).

8 - SHIPPING DAMAGES. Visible and/or

hidden damage is the responsibility of the freight
carrier. The consignee must inform the carrier
and consignor immediately, or upon discovery in
the case of hidden defects.

KEEP ALL ORIGINAL CONTAINERS AND PAC­KING MATERIALS FOR CARRIER INSPECTION.

Neither ROBOT COUPE U.S.A., INC. nor its
affiliated companies or any of its distributors,
directors, agents, employees, or insurers will be
liable for indirect damage, losses, or expenses
linked to the appliance or the inability to use it.

The ROBOT COUPE U.S.A., INC. warranty
is given expressly and in lieu of all other
warranties, expressed or implied, for merchan­tability and for fitness toward a particular
purpose and constitutes the only warranty
made by ROBOT COUPE U.S.A., INC..

YOUR NEW ROBOT COUPE
PRODUCT IS WARRANTED TO THE
ORIGINAL PURCHASER FOR A
PERIOD OF ONE YEAR FROM THE
DATE OF PURCHASE.

This LIMITED WARRANTY is against
defects in the material and/or
workmanship, and includes labor for
replacement of defective parts,
provided repairs are performed by
an authorized service agency (see
attached list).

The Customer must inform the
Service Agency of the possibility of
warranty coverage and provide a
copy of the dated sales or delivery
receipt BEFORE WARRANTY REPAIRS
ARE BEGUN.

Replacement parts and accessories
are warranted for ninety (90) days
from the date of purchase when
purchased separately and will be
verified by dated sales receipt OR
packing slip which lists that item.

All parts or accessories replaced
under warranty must be returned to
the Service Agency.

ROBOT COUPE U.S.A., INC. LIMITED WARRANTY

280 South Perkins St., Ridgeland, MS 39157

e-mail: [e-mail] - website: www.robotcoupeusa.com - Phone : [phone]

5

ENGLISH

WARNING: In order to limit accidents such as electric shocks, personal injury or fire, and in order to limit material damage due to
misuse of the appliance, please read these instructions carefully and follow them strictly. Reading the operating instructions will
help you get to know your appliance and enable you to use the equipment correctly. The operation manual should be kept within
easy access to all users for reference and should be read completely by all first time users of the machine.

IMPORTANT WARNING

UNPACKING

• Carefully remove the equipment from the packaging
and take out all the boxes or packets containing
attachments or specific items.

•WARNING-some of the parts are very sharp e. g.
blades … etc.

INSTALLATION

•Install your machine on a stable solid base.

CONNECTION

•Always check that your power supply corresponds
to that indicated on the serial number plate and that
it is properly sized.

HANDLING

•Always wear cut-resistant gloves when handling
the cutting blades.

ASSEMBLY PROCEDURES

• Follow the various assembly procedures carefully
(see page 7) and make sure that all the attachments
are correctly positioned.

USE

• Do not open the bowl lid until the blade have
come to a complete stop.

• Never tamper with or defeat the purpose of the
locking and safety systems.

• Never put a hand or nonfood object into the
bowl.

• Do not overload the machine.

• The blades are sharp. Wear cut-resistant gloves
when handling the blades.

CLEANING

• Always unplug your appliance before cleaning.

• Always clean the appliance and attachments at
the end of each use.

• For parts made of aluminum alloys, use cleaning
detergents suitable for aluminum. Presently, there
are no aluminum alloys on the surface of the
machine.

• Do not spray or pressure-wash the machine.

• For plastic parts, do not use detergents that are
too alkaline (i.e., containing too much caustic soda
or ammonia…).

MAINTENANCE

• Always unplug the appliance before servicing.

• Check the seals regularly and ensure that the
safety devices are in good working order.

• It is particularly important to maintain and check
the attachments since certain products contain cor­rosive agents e.g. citric acid.

• NOTICE

: Never operate the appliance if the
power cord or plug has been damaged. If the
machine fails to operate as described in this
manual, or if the machine malfunctions in any way,
remove the machine from use and have it serviced.
Additionally, discard all food processed at the time
of the malfunction.

•Contact your local Authorized Service Agency if
something appears to be wrong.

KEEP THESE INSTRUCTIONS

IN A SAFE PLACE

W ARNING

6

INTRODUCING THE NEW
VERTICAL CUTTER-MIXER
R 23 • R 30 • R 45 • R 60

The vertical cutter-mixer is ideally suited to professional
needs.

It can be used to perform countless jobs that you will
gradually discover as you use it.

The vertical cutter runs at two speeds: 1, 8 0 0 and
3,600 rpm. You can use it to prepare meat, vege­tables, smooth-textured stuffings and mousses, as
well as for grinding, kneading and so on - with a
maximum processing time of five minutes for the
longest jobs.

Its numerous functions will open the door to a whole
new culinary world.

Thanks to your appliance's simple design, all com­ponents requiring frequent handling for maintenance
or cleaning can be fitted and removed with the grea­test of ease.

For optimum convenience, this manual describes the
various assembly operations on a step-by-step basis.

It places special emphasis on explaining the various
actions that cause the motor to stop, as the
appliance is equipped with safety devices which pre­vent access to the blade assembly until it has come
to a complete standstill.

This manual contains important information
designed to help you get the most out of your
vertical cutter-mixer.

We therefore recommend that you read the
manual carefully before using your appliance.

We have also included examples of a few processing
tasks to help you get the feel of your new appliance
and appreciate the full range of its many useful
features.

Control panel
Transparent lid
Locking catch
Lid support arm
Handle

1

1

2

3

4

5

4

3

2

5

6

7

8

9

10

Bowl
Tilting lever
Motor unit
Wheels (option)
Stainless-steel frame

6

7

8

9

10

SWITCHING ON
THE MACHINE

• ADVICE ON ELECTRICAL CONNECTIONS

The wiring must be installed by a qualified
electrician.

Before plugging your appliance in, check that your
power supply voltage is the same as that indicated
on the rating plate.

If your appliance is not connected to the mains via
a plug and socket, it must be connected to an elec­trical disconnect switch that can be padlocked.

RISK OF ELECTROCUTION

With the blade removed and the bowl empty, turn
on the machine. The shaft should rotate in a coun­terclockwise direction.

CHANGING MOTOR ROTATION REQUIRES A
QUALIFIED ELECTRICIAN

Appliances are designed to operate on a

208-240 Volt, 60 Hz,

3 Phase power supply.

• The machine must be grounded electrically.

• The appliance is only insulated from the
mains supply when it is unplugged.

• In case of overload trip, the motor stops and only
the orange light is on. After the automatic resetting
of the overload device, the orange light switch off,
both green lights switch on and the machine can be
restarted.

ASSEMBLY

1) Notice the lip on the
bowl. On one side, directly
over one of the handles,
the lip extends straight out
rather than being curled.
This feature is for pouring
and should be to your left
as you place the bowl onto
the machine.

Facing the tilting lever end of the machine, lower the
bowl over the motor shaft until it rests on the top sur­face of the motor unit. Turn the bowl handles in a
clockwise direction about 45° as shown until you feel
it drop down a bit. Once you feel the bowl bottom­out, turn it back in a counterclockwise direction until it
comes to a complete stop and feels tight and stable.
When viewed from the tilting lever end, the handles
should be directly to your left and right. The bottom
of the bowl should be parallel with the top surface of
the motor unit.

2) Before you continue,
make sure the bowl is in
the upright position. Check
the locking lever. It should
be rotated to the right (as
you are facing the locking
lever end of the machine)
and pressed down, locking
the bowl in the upright
position.

• CONTROL PANEL

•SAFETY INDICATOR LIGHTS

For models R 23 • R 30 • R 45 • R 60 :

• The orange light comes on when the appliance is
plugged in. If none of the lights come on, this either

means that the appliance is not plugged in properly
or that one of the safety device is not activated.

• 2 green lights indicate that the appliance is ready
for use (see starting procedure on page 6).

• The red light is a motor temperature indicator.
When it comes on, it means that the motor has
reached a temperature of 120 °C and may shortly
cut out to avoid overheating. This allows you to halt
your processing task before it avoid possible motor
damage. It is best to wait until the red light has gone
out before resuming your task.

• In case of motor thermal cut-out, the red and
orange lights will stay on until the motor has cooled
down. The machine will not start while the orange
light is on.

“Off” button

Buttons for setting
timer

Timer display
screen

“On” button
Low speed (1,800 rpm)

“On” button
High speed (3,600 rpm)

Pulse control button
(Low speed 1,800 rpm)

DANGER : RISK OF INJURY

3) Place the blade assembly
on the motor shaft.
Then lower it to the bottom
of the bowl by rotating it.

Always check that the
blade assembly is correctly

positioned at the bottom
of the bowl before placing

the ingredients you wish to
process in the bowl.

4) Position the lid in the
space provided in the lid
support arm, then rotate it
90° to lock it into position.

5) To close the lid, fit the
locking catch over the
edge of the bowl and push
the handle down. The
appliance is now ready for
use. The green lights
should be on.

If the safety indicator lights do not become green,
check all the assembly procedures according to
page 47.

7

ENGLISH

The blades are extremely sharp.
For this reason, always make sure you have

removed the blade assembly before doing any job
inside the bowl, such as cleaning or emptying.

8

Smooth, “crescent-sha­ped” 3-blade assembly,
supplied as a standard
attachment.
Distinctive feature: the

“crescent” blades make
it easier to mix and

bind ingredients.

A 2-blade assembly is used for processing small
quantities or liquid preparations. The 3-blade
assembly is used for maximum capacities with dry
ingredients.

To obtain the best results, it is important to set the
right spacing between the blades. Do not excess
maximum processing capacities (see following
table).

MAXIMUM PROCESSING
CAPACITIES

Quantities are given in pounds.

HELPFUL TIPS

•EMPTYING THE BOWL

1) Open the lid by freeing
the locking handle. Release
the tilting lever by raising it.

2) Depending on the pro­duct, it may be possible to
remove the blade assem­bly before tilting the bowl.
If it is not practical to
remove it, hold the blade
assembly down with one
hand while tilting the bowl
with the other.

CAUTION: It is advisable to wear cut-resistant glo­ves when handling the blades.

3) With a receptacle in
place, tilt and empty the
bowl.

•

BLADE ASSEMBLIES

In order to ensure optimum cutting quality, Robot-
Coupe has developed new, patented blade

profiles.
These blades, which are perfectly balanced in order

to avoid any vibration, are supplied with three
different types of edge.

Standard blade :

Smooth edge for emulsions,

mousses and finely-chopped
meat and vegetables.

Optional blades :

Fine serrated edge for all

blending tasks and smooth or
fine-textured preparations.

Coarse serrated edge for cake­making (grinding almonds and
hazelnuts, making icing sugar),
for frozen goods and all hard
foodstuffs.

TYPE OF PREPARATION R 23 R 30 R 45 R 60

Coarse chopping

22 26 40 55

Emulsion

24 31 53 66

Kneading (in lb of flour)

15 17 26 39

Grinding 11 13 20 25

9

ENGLISH

•2-BLADE ASSEMBLY:

We recommend you to use the 2-blade assembly for processing liquid and blended
preparation or for dry ingredients in small quantities, up to half of the maximum values
(refer to the previous table).

Position 1

Position 2

Correct positioning of

2-blade assembly (top view)

180°

FITTING AND USING THE BLADE ASSEMBLY

Screw nut

Wide spacer

Blade

Locking spacer

Narrow spacer

Blade shaft

Position 1 Position 2

•3-BLADE ASSEMBLY:

We recommend you to use the 3-blade assembly for processing large quantities of more
than half the maximum limit indicated previously, with the exception of liquid or blended
preparations for which we strongly recommend you use the 2-blade assembly.

To obtain the best possible results with these types of preparation, we recommand the
use of the low speed only.

Correct positioning of

3-blade assembly (top view)

POSITION 1 : With spacer between lower blade and blade shaft.

• For coarse chopping.

ASSEMBLY : • Fit the blades and spacers so that they are the right distance

apart, according to the :

- type

- weight and

- volume of the foodstuffs to be processed.

POSITION 2 : No spacer between lower blade and blade shaft.

• For fine chopping and emulsions.

• For grinding and kneading.

DISASSEMBLY : • Unscrew the screw nut

• Remove the spacers.

120°

120°

10

OPERATING INSTRUCTIONS FOR THE VACUUM KIT R-VAC

®

Keep an eye on
the position of
the O-ring seal
when fitting
part N° 1

Filter N° 2
can be clea­ned.

B

A

1

1

6

4

5

7

8

2

3

4

5

1° ASSEMBLING THE VACUUM

KIT R-VAC

®

- Insert filter N° 2 into body N° 3

- Screw part N° 1 onto body
N° 3 (the tube is fed through
body N° 3).

2° POSITIONNING THE VACUUM

KIT R-VAC

®

- Insert the plastic part N°4 in the
lid N°6.

- Insert the vaccum kit R-VAC

®

into the plastic part N°4.
(Beware of the 2 seals)

- Screw part N°5 onto part N°1.

3° USING THE VACUUM

KIT R-VAC

®

- Connect the vacuum pump to
valve A, check that the latter is
open (lever in shaft of connector).

- Shut valve B
(perpendicular lever).

4° ASSEMBLING THE KIT INTO THE

BOWL

- Insert the star support N°7 into the

bowl n°8.

- Insert the vaccum kit R-VAC

®

into

the plastic part N°4.

- Screw part N°5 onto part N°1.

5° ADDING LIQUID TO

THE MIXTURE

- Attach a tube to valve B.

- Immerse the other end of this
tube in the liquid to be added.

- Open valve B slowly; once the
liquid has been added,
shut valve B.

If you already have a vacuum packing
machine, you can connect the kit to
the vacuum pump on this machine.

The R-VAC

®

kit was specifically
designed so that liquids can be added
to the mixture during processing, while
keeping the food under vacuum.

IMPORTANT

It is important to clean the filter regularly in
order to maintain the original state of the
part.

11

ENGLISH

OPTIONS

• COARSE SERRATED BLADES

The blade shaft can be
fitted with serrated
blades, which are used
mainly for :

- kneading (shortcrust
pastry, flan pastry,
almond paste, praline,
etc.).

- grinding (frozen foods,
shellfish, almonds, etc.).

• FINE SERRATED BLADES

The blade shaft can also
be fitted with micro­toothed blades, which
are used mainly for
chopping herbs (e.g.
parsley) and blending.

• FRUIT

Compotes / fruit purées 28 35 53 73

EMULSIFYING

Mayonnaise / aioli / taramasalata 28 35 53 73

Rémoulade sauce 28 35 53 73
Snail / salmon butter 17 22 35 60

KNEADING

Shortcrust / biscuit pastry
Flaky pastry 12 16 27 38
Pizza / bread dough
Brioche dough 11 13 21 26

GRINDING

Almond paste 13 17 26 37
Praline 24 31 44 62
Seafood / crushed ice 11 13 20 26
Breadcrumbs 13 15 24 33

BLENDING

Liquid preparations* 35 44 66 88

The vertical cutter-mixer has numerous other
applications. The above quantities are given for
guidance only and may vary.

* In low speed only

• WHEELS

Your cutter can be sup­plied with 3 retractable
wheels (exclusive to
ROBOT-COUPE) which
can be lowered or raised
simply by lifting each
leg. This makes it easy
to move the machine
around and thereby faci­litates the cleaning of the
working surfaces.

EXAMPLES OF USE

The cutter will enable you to perform all your
cutting tasks in minimum time. We recommend
therefore, that you keep a close eye on the mixture
in order to obtain the desired results.

ACCESSORY

• LID WIPER

Your cutter is fitted with a
lid wiper to clean the insi­de surface of the lid
during processing, there­by enabling you to moni-

tor the preparation.

R 23 R 30 R 45 R 60

USES (lbs)

CHOPPING

• MEAT

Minced beef 22 25 40 55
Sausage meat / tomate stuffing 22 26 40 55
Terrine / saucisson 26 31 48 66
White pudding / liver mousse* 28 35 53 73
Smooth-textured mixtures (frankfurters) 17 22 31 40

• FISH

Puréed fish* 28 35 53 73
Fish stuffings* 28 35 53 73

• VEGETABLES

Garlic / parsely /onion / shallots half bowl volume
Soup / vegetable purées* 37 46 70 97

12

CLEANING

W ARNING

IMPORTANT

When you are not using your appliance, keep the
lid open and do not leave the bowl in the locked
position (this will prevent the seals from becoming
worn).

CLEANING THE LID

Wash the lid by hand in a three-tank system pot sink.
The high temperatures of dish machines can shorten
the life of plastics. Wash the lid with a detergent
suitable for cleaning plastic parts. Allow the lid to
air-dry after sanitizing and before reassembly.

CLEANING THE EXTERIOR FRAME AND HOUSING

Always unplug the machine before cleaning. Do not
pressure-wash the machine. Use a cloth dampened
with a soapy-water solution to wipe down the exterior.

CLEANING THE SEALS

The seals under the bowl protect the motor and
seal the bottom of the bowl. Clean the seals with a
soapy-water solution. If necessary, use a small
brush to help loosen food particles. After cleaning,
lubricate the seals with a food-grade grease or oil.

IMPORTANT

MAINTENANCE

• BLADES

Wear cut-resistant gloves when handling the blade
assembly.
The blades do not need to be razor sharp to
provide a quality cut. However, they will need
sharpening from time to time. Use the honing stone
shipped with the machine, or have the blades
sharpened professionally if you prefer. If they
become too worn to sharpen, replacement blades
are available.

• SHAFT SEALS

The watertighness is achieved by a sealing socket
that holds two shaft seals, a stainless steel deflector
with integrated V-ring (upperside) and an O-ring
(lowerside).

To ensure that the motor remains totally watertight,
it is advisable to check the seals for wear once a
month, and replace them if necessary.

When the seals are worn, liquid may first run into
the bearings, then reach the motor. If this happens,
the seals, the bearings and even the motor may
have to be replaced.
The seals are easy to replace without having to
remove the motor, so you are strongly advised to
keep an eye on their state of wear.

• REPLACEMENT OF MOTOR SHAFT SEAL

1) Tools needed 2) Remove the

bowl

3) Remove the
bowl seal

2

All parts that come into contact with food are easy
to remove and clean. Failure to keep the machine
clean can result in tainted food, high repair costs,
and shortened machine life. Follow the cleaning
instructions detailed below, or clean according to
local Health Department Regulations.

Pre-rinse the attachments before washing to remove
any bulk food on the parts. A stiff bristle brush or
power sprayer faucet attachment is effective in
knocking the food out of the crevices of the attachments
as a pre-rinse procedure. Follow the instructions
below for individual parts.

CLEANING THE BLADE ASSEMBLY

For the purpose of sanitation, the blades must be
disassembled (see the maintenance section for
instructions) and cleaned at the end of each prep
session or three times a day. The blade assembly
should be completely disassembled before washing.
The blade assembly can be washed in a dish
machine or three-tank system pot sink. The washer
should have an industry-standard wash, rinse, and
sanitization cycle. Allow the parts to air-dry after
sanitizing. Apply a little food-grade oil or grease to
the threads on the top locking nut before reassembly.

CLEANING THE BOWL

Wash the bowl in a dish machine or three-tank
system pot sink. The washer should have an industry­standard wash, rinse, and sanitization cycle. Allow
the bowl to air-dry after sanitizing and before
reassembly.

Like the bowl and lid, the blade assembly
should also be removed for cleaning after use.

Always dry all the metal parts carefully, espe­cially the blades, to avoid oxidization.

Check that your detergent is suitable for clea­ning the plastic parts.
Certain washing agents are too alkaline (e.g.
high levels of caustic soda or ammonia) and
totally incompatible with certain types of
plastic, causing them to deteriorate rapidly.

As a precaution, always unplug your appliance
before cleaning it (hazard of electrocution) and
handle the blades with care (hazard of injury).