Mahlkonig K30 TWIN User manual

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HORECA GASTRO GRINDER
Operating Instructions
K30 TWIN Espresso Grinder
”Grind-on-Demand“
The professional art of grinding
since 1924

Dear customer / service personnel
the Double Espresso Grinder„K30TWIN”is a fully automatic espres-
so coffee grinder of the proven MAHLKÖNIG quality.
We have developed this product with over 80 years of experience
in the manufacture of coffee grinders assuring you of high quality
grinding of all kinds of espresso and other types of coffee beans.
Espresso as the base of various coffee specialities requires a very
precise grind. With the „K30 TWIN“ you can now grind two differ-
ent kinds of espresso (like decaf and regular) simultaneously in one
machine.
Read through and observe the operating instructions, so you and
your customers will thoroughly enjoy the ”K30 TWIN”. Follow the
safety instructions at all time and also advise your personell.
Please store the instructions in a safe place.If anything is unclear or
additional information is required, please contact your authorized
dealer or us as the manufacturer. We will be pleased to advise you
further.
We wish you unlimited pleasure and success with our product
MAHLKÖNIG GmbH & Co. KG
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HORECA GASTRO GRINDER

6. Cleaning
6.1 Cleaning with GRINDZTM Grinder Cleaner
6.2 Cleaning the Drip Tray and the Hoppers
6.3 Cleaning the Grinder Placement Surface
6.4 Cleaning the Grinder Casing
7. Maintenance and Repair
7.1 Grinding fineness adjustment with the grinder switched ON
7.2 Taking off the grinder cover
7.3 Basic Adjustment of The Interior Grinders
7.4 Cleaning of the Grinding Mechanism
7.5 Grinding Disc Exchange
7.6 Removal of The Integrated Grinder
8. Trouble Shooting For Operating Faults
8.1 Safety Devices of the Grinder
8.2 Operating Fault
8.3 Alarm Signals Showing in The Display
9. Spare Parts
10. Wiring Diagram
11. Certificate
12. Warranty Conditions
Table of Contents
1. Safety
1.1 Symbols
1.2 Safety Instructions
1.3 Purpose of Use
1.4 User Requirements
2. Technical Data
3. Description
4. Set-up and Initial Adjustments
4.1 Place of installation
4.2 Locking in the hoppers
4.3 Electrical Installation
4.4 Adjustment of the port-a-filter rests
4.5 Adjustment of the cleaning alarm
5. Operation
5.1 Instructions for the first grinding steps
5.2 Operating the grinder
5.3 Interruption of grinding (break-function)
5.4 Software Menu
5.5 Describtion of the software chapters
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HORECA GASTRO GRINDER

1. Safety
Please read carefully and observe the following
safety instructions. Failure to do so can result in
damage to the grinder and danger to the user.
1.1 Symbols
The following two symbols are used in these operating instruc-
tions:
Safety Instruction:
Imminent accident danger if you fail to observe.
General Instruction:
Failure to observe can result in damage to the
grinder and optimum operation cannot be guar-
anteed.
1.2 Safety Instructions
Only whole roasted coffee beans may be ground in the K30 TWIN!
When unpacking please inspect whether the power supply (volt-
age) complies with the grinder voltage on the manufacturer’s
name plate at the bottom of the grinder.
Always remove the electrical plug from the outlet prior to remov-
ing the hopper or conducting maintenance or cleaning work on the
grinder.
Never operate a grinder with a damaged electrical cord. Inspect the
grinder regularly for damages of the electrical cord, plug, etc.
Any required repairs may only be conducted by authorized service
personell. For this reason, please contact a customer service repair
facility, your dealer or us directly as the manufacturer.
Do not exceed the maximum allowable continuous grinding time
of 20 min. Afterwards, allow the grinder to cool off before the next
operation. Do not exceed the maximum allowable running cycle of
4 sec. ON, 6 sec. OFF (6 double shots per minute, S3 40%) for 230V /
50Hz, and 6 sec. ON, 15 sec. OFF (4 double shots per minute, S3 25%)
for 115V / 60Hz.
Do not make any modifications or alterations to the grinder. The
manufacturer assumes absolutely no liability for damages occur-
ring from failure to observe these instructions.
Children cannot appreciate the dangers that can exist in the opera-
tion of electrical grinders. For this reason never leave children unsu-
pervised with electronic appliances such as this grinder.
Never operate the grinder in damp or wet sur-
roundings. Never operate with wet hands
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HORECA GASTRO GRINDER

1.3 Purpose of Use
Only whole roasted coffee beans may be ground in the K30 TWIN
grinder. Pay attention to use only clean and unground coffee. Never
use the grinder to grind other products or objects.
1.4 User Requirements
No special requirements are necessary for the user of this grinder.
It is nevertheless a prerequisite that these operating instructions
have been carefully read and understood and that all instructions
provided are observed. In addition safety-conscious operation is ex-
pected.
2. Technical Data
Type K30 TWIN
Voltage/Frequency 200-230V / 50/60Hz
240V / 50Hz
100-115V / 50/60Hz
Rotation
230-240V 1420 rpm
110-115V 1640 rpm
Sound Emission
Idle Operation 65 dB
Operation 85 dB
Pre-Fuse 16 A-slow
Motor Fuse 5x20 10A slow
Overload Circuit Breaker
200-240V 4A T
110-115V 7A T
Max. Permissible Running 230V:4sec ON,6 secOFF
Time of the Grinder 115V:6sec.ON,15sec.OFF
Dimensions in mm B 368, H 590,T 300
Weight 26 kg (57.3 lbs)
Hopper Capacity 2x750 g (2 x 1.65 lbs.)
(Please request technical data for other voltages and frequencies from the manufac-
turer or dealer)
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HORECA GASTRO GRINDER

3. Description
The main components and operating elements are pictured in the
illustration.
Pos. 1 Hopper with lid and finger protection
Pos. 2 Lock screw for hopper
Pos. 3 Grinding fineness adjustment
Pos. 4 Brake for grind adjustment
Pos. 5 Grinder cover with lock screw
Pos. 6 Display
Pos. 7 Pre-selection button „single espresso“
Pos. 8 Pre-selection button „double espresso“
Pos. 9 „Program“-button
Pos. 10 Spout
Pos. 11 Port-a-filter mounting
Pos. 12 Port-a-filter rest
Pos. 13 Fastening screw for port-a-filter rest
Pos. 14 Start / Stop switch
Pos. 15 Drip tray (with hopper slides underneath)
Pos. 16 Main switch (at the back of the grinder)
1
4
5
6
7
15
2
3
8
10
12
14
16
11
13
9
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HORECA GASTRO GRINDER

4.3 Electrical Installation
Prior to plugging in observe the following safety instructions:
Protect your device with separate pre-fuses (not
included in the scope of delivery) according to
the information provided under point 2 „Techni-
cal Data“
Make sure that the pre-fuse is not overloaded
by other devices (e.g. fan heaters, deep freezers,
etc)
Check whether the main voltage and frequency
correspond to the information on the rating
plate underneath the grinder.
Insert the plug into the corresponding grounded outlet.
4.4 Adjustment of the port-a-filter rests
The grinder is designed so that all different port-a-filters from vari-
ous espresso machines fit into the rest for hands-free grinding op-
eration.
4.4.1 Keep the grinder switched off. Slightly loosen the allen screws
(pos. 13) with the included allen screw driver size 3mm and pull
down the port-a-filter rest (pos. 12).
4.4.2 Push the port-a-filter of your espresso machine onto the start/
stop switch between the port-a-filter mounting (pos. 11) and the
rest (pos 12). Now push up the port-a-filter rest until the port-a-
filter holds on its own. Now refasten the screws.
4. Set-up and Initial Adjustments
You have received your grinder in operating condition. Now you only
need to place it in a safe place and connect it to the main power
socket. Proceed as follows:
4.1 Place of Installation
Place the grinder on a level, vibration-free surface.
Never operate the grinder in moist, or even
worse, in wet surroundings!
4.2 Locking in the hoppers
Set the hopper into the bayonet socket. Grab the hopper with both
hands and turn it carefully in clockwise direction, until the bayonet
locks in.
Always loosen the grind adjustment brakes and
turn both adjustments to fine (setting 0) when
locking in the hoppers. Turning the grind adjust-
ment ring repeatedly without loosening the
brake could damage the interlock.
Fasten the lock screw for the hopper (pos. 2) to prevent the hoppers
from unauthorized removal.
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HORECA GASTRO GRINDER

The adjustment is correct when the port-a-filter independently re-
mains in the mounting.
In case the port-a-filter rests does not fit your
espresso machine’s port-a-filter, please contact
us or your local dealer.We will be happy to send
you a different rest.
4.5 Adjustment of the cleaning alarm
The software of the K30 TWIN has an integrated cleaning alarm
which is activated at a pre-set amount of shots taken. This alarm
should remind you of cleaning the grinder regularly in order to in-
crease the discs‘ lifetime.
MAHLKÖNIG recommends: The cleaning limit
should be set to the amount of shots that are
ground per week. (For the set-up of the limit
and for resetting the counter after cleaning see
chapter 5.5.9)
5. Operation
Once the grinder is set up and ready to operate a grinding test
should be carried out.
5.1 Instructions for the first grinding steps
Only use the K30 TWIN espresso grinder for
whole roasted coffee beans.
Observe the safety instructions under 1.2!
Never exceed the maximum permissible con-
tinuous operating cycle of 4 sec ON, 6 sec OFF
(S3 40%). Also do not exceed the maximum al-
lowable continuous grinding time of 20 min. Af-
terwards, allow the grinder to cool down before
the next operation.
5.2 Operating the grinder
5.2.1 Switch on the grinder at the back of the casing (pos. 16).
5.2.2 Open the hopper and pour whole roasted espresso beans into
the hopper.
Never pour in coffee powder which would result
into immediate blocking of the discs.
5.2.3 Adjust the grinding fineness by pulling the grind adjustment
interlock (pos. 4) and turning the ring (pos. 3) including the hopper
to the desired position. Note that „0“ is the finest setting and „10“ is
the coarsest. Let go and re-lock the brake to fix the setting.
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HORECA GASTRO GRINDER
coarse
fine

5.2.7 Now brew a test portion of espresso using your machine. If the
result is unsatisfactory, alter the adjustment again by varying the
grinding time and grinding fineness until the best coffee results
have been achieved.
5.3 Interruption of grinding (break-function)
If the grinding process is interrupted before the set grinding time
has expired, the LED in the active pre-selection button flashes. The
grinding process can be re-started by pushing the port-a-filter back
into the mounting. The missing quantity is ground. If this is not
desired push the pre-selection button and the entire set grinding
quantity or grinding time is available once again.
5.4 Software Menu
The following overview shows the handling of the K30 TWIN’s soft-
ware.
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HORECA GASTRO GRINDER
Test runs have proved grind adjustments 1 – 4
to be the most common settings for espresso
depending on the origin, roast and blend. This
should be taken into account when adjusting
the grinder for the first time.
5.2.4 For the first test run the grinding time settings are pre-pro-
grammed for single shots to 2.0 sec and for double shots 4.0 sec.
For changing these settings please see chapter 5.3.
5.2.5 Choose the single or double pre-select-button according to
your portafilter. The LED shows which button is selected.
Single espresso left grinder Single espresso right grinder
Double espresso left grinder Double espresso right grinder
5.2.6 Push your espresso machine’s portafilter into the partafilter
mounting (pos. 11/12) so that the grinding process starts.
The first operation will not result in the desired
amount of espresso because the grinder has
to fill up with ground coffee. The second shot
should give the correct result.

PROG.
Enter (go into a lower software menu level) P5
right
go foreward in menu P8
left
decrease values in menu ( - button) P6
left
increase values in menu ( + button) P7
right
go back in menu P9
Display
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HORECA GASTRO GRINDER

Main Menu
S
ub Menu
PROG.
press
PROG.
press
MAHLKOENIG
GRINDER READY 1) PROGRAM DOSE GRINDER N° 1
DOSE N° 1 2.000s
(left grinder - single shot)
GRINDER N° 1
DOSE N° 2 4.000s
(left grinder - double shot)
GRINDER N° 2
DOSE N° 1 2.000s
(right grinder - single shot)
GRINDER N° 2
DOS N° 2 4.000s
(right grinder - double shot)
right
press
right
press
right
press
right
press
PROG.
press
time blinking
PROG.
press
save
left
left
Sec.
Sec.
PROG.
press
time blinking
PROG.
press
save
left
left
Sec.
Sec.
PROG.
press
time blinking
PROG.
press
save
left
left
Sec.
Sec.
PROG.
press
time blinking
PROG.
press
save
left
left
Sec.
Sec.
PROG.
press
2) DOSE COUNTER GR1: SHOTS1
0000002
(left grinder - 2 single shots)
GR1: SHOTS2
0000120
(left grinder - 120 double shots)
GR2: SHOTS1
0002123
(right grinder - 2123 single shots)
GR2: SHOTS2
0000020
(right grinder - 20 double shots)
right
press
right
press
right
press
right
press
PROG.
press
3) ALARM / RECORDS NO RECORDS
right
press
or ALARM RECORDS e.g.
GRINDER 1
BLOCKED GRINDER 1
FAN TOO SLOW
right
press
right
press
right
press
right
press counter volumes represent examples
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HORECA GASTRO GRINDER

Main Menu Sub Menu
PROG.
press
4) LANGUAGE, REL
SW, SERIAL N° 4-1) LANGUAGE ENGLISH 4-2) SW RELEASE 0.07 4-3) SERIAL N° 1234
right
press
right
press
right
press
PROG.
press
PROG.
press
SAVE
left
left
CHANGE LANGUAGE
CHANGE LANGUAGE
LANGUAGE BLINKING
PROG.
press
5) RESET RESET
GRINDER N° 1 RESET GRINDER N° 2 RESET ALARM RECORDS RESET CLEANING COUNTER
RESETTING
GRINDER N° 1 RESETTING GRINDER N° 2 RESETTING ALARM RECORDS RESETTING CLEANING COUNTER
right
press
right
press
right
press
right
press
PROG.
press
PROG.
press
PROG.
press
PROG.
press
set dose counter
of left grinder back to 0 set dose counter of right grinder back to 0 delete all alarm records set cleaning counter back to 0
right
press
right
press
only service menu
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HORECA GASTRO GRINDER

Main Menu Sub Menu
PROG.
press
6) SETUP 6-1) CLEANING AL.
NO
6-1) CLEANING AL.
NO YES
6-2) CLEANING AL.
1000 6-3) SERIAL N° 1234
right
press
right
press
right
press
only changable
in factory with super pin
PROG.
press
PROG.
press
NUMBER blinking
PROG.
press
SAVE
left
left
PROG.
press
SAVE
left
left
YES
NO
or
right
press
only service menu
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HORECA GASTRO GRINDER

Main Menu Sub Menu
PROG.
press
7) TEST 7-1) INPUT, DIP
SWITCH, FAN 7-2) TRIAK, RELAY CURRNET 7-3) BUTTONS 7-4) DISPLAY
SIC SW1 SW2 MC1
OFF OFF OFF OFF
F1 (HZ) F2 (HZ)
ON 120 OFF 0
GR1=OFF RL=ON
I = 4.89A
right
press
right
press
right
press
right
press
PROG.
press
PROG.
press
PROG.
press
PROG.
press
PROG.
press
PROG.
press
7-5) POWER
SUPPLY 7-6) RS232 INTERFACE
right
press
right
press
rightright
KEYB=
(checking the function of the
buttons with numbers) LCD
(testing all display dots)
LED
(testing all LED’s)
SIC: Lid safety switch
SW1: switch left grinder
SW2: switch right grinder
MC1: 230V / 115V
ON: Contact closed
activates / deactivates
the triak of the grinder
press
left
press
right
LCD
press
right
press
right
BUZZ
(testing the alarm)
press
right
activates / deactivates
the relayof the grinder
press
left
press
right
F1: FAN 1
(HZ): Frequency of F1
F2: FAN 2
(HZ): Frequency of F2
press
right
V-SUPPLY = 27.3V testing the RS 232
Interface
right
right
for grinder 1
for grinder 2
or
for P5
press
for P6
left
press
for P8
right
press
for P7
left
press
for P9
right
END
right
press
only service menu
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HORECA GASTRO GRINDER

Main Menu Sub Menu
PROG.
press
8) CHANGE
PASSWORD PASSWORD
XXXXXX
right
press
right
press
the first X blinking
SAVE
left
left
for next number
and
for saving in the end
PROG.
press
9) CLEANING COUNT.
RESET
MAHLKOENIG
GRINDER READY
9-1) CLEANING AT
1000
right
press
PROG.
press
NUMBER blinking
PROG.
press
SAVE
left
left
9-2) RESET
RESETTING
CLEANING COUNTER
right
press
PROG.
press
END MENU
right
press
right
press
only service menu
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HORECA GASTRO GRINDER

Pressing the PROG-button once enters the user
menu (menu chapters 1-4 and 9).
Pressing the PROG-button for appr. 5 seconds
and typing in the password enters the service
menu (menu chapters 1-8).
Password:
Until serial number 18571:„666 666“ (software version V0.12)
From serial number 18572:„000 000“ (software version V0.13)
5.5 Describtion of the software chapters
5.5.1 Program Dose
Adjust and change the grinding time for single and double dosing
for both grinders.
GRINDER N°1 = left grinder
GRINDER N°2 = right grinder
DOS N°1 = single espresso
DOS N°2 = double espresso
The time can be set in 0.005 sec steps. A change of 0.1 seconds adds
or takes away approximately 0.5 gram of coffee. (This reference val-
ue can vary for different coffees and roasting degrees.)
Press and hold the PROG-button after changing the time to quick-
exit the menu. The display will show „MAHLKOENIG GRINDER
READY“.
5.5.2 Dose Counter
Read the counters for single and double shots for both grinders.
5.5.3 Alarm Records
Alarms are saved in the order of appearance (the last one to appear
first in line). 20 alarms can be saved, the 21st overwrites the oldest.
For a detailed describtion of all alarms with causes and remedies
please see chapter 8.3.
5.5.4 Language, Software Release, Serial Number
Change the language of the menu (Italian,English, French,German,
Spanish). Read the software release number and serial number of
the grinder.
5.5.5 Reset (only in the service menu)
All counters and alarm records can be set back to Zero or deleated
respectively.
5.5.6 Setup (only in the service menu)
Set up the cleaning alarm:
• Switch ON or OFF the cleaning alarm.
• Set the Cleaning Alarm Limit, which is the max. allowable limit
that can be set in menu point 9.
5.5.7 Test (only in the service menu)
Check the functionality of the different electrical components and
functions in the grinder. This menu point should help service part-
ners to locate potential malfunctions.
5.5.8 Change Passwort (only in the service menu)
Change the passwort to your individual 6-digit number. (see chap-
ter 5.4)
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HORECA GASTRO GRINDER

5.5.9 Cleaning Counter Reset
Set the cleaning counter to the appropriate amount of shots so
that the alarm reminds the user to clean the discs on a regular ba-
sis. (see chapter 4.5)
Set the counter back to Zero after cleaning the grinder.
6. Cleaning
We recommend cleaning your espresso grinder regularly. Only use
food-safe cleaning detergents.
Always pull the main plug from the socket be-
fore carrying out maintenance or cleaning work
on the grinder.
Observe the safety instructions under 1.2.
Do not let any foreign object fall into the grind-
ing mechanism.
6.1 Cleaning with GRINDZTM Grinder Cleaner
We recommend cleaning your espresso grinder once a week with
our GRINDZ™ Grinder Cleaner.
MAHLKÖNIG recommends: The cleaning limit
should be set to the amount of shots that are
ground per week. (For the set-up of the limit
and for resetting the counter after cleaning see
chapter 5.5.9)
Remove all beans from the hopper or take the hopper slides from
under the drip tray and push them into the slots in the bayonet
adapter. Remove the lock screw. Now you can take off the hopper.
When taking off the hopper ALWAYS release the
grind adjustment brakes and turn both rings to
coarse. This will block the adjustment. Turning
the grind adjustment ring repeatedly without
loosening the brake could damage the inter-
lock.
Grab the hopper with both hands and turn it anti-clockwise until
it is released by the bayonet. Empty the input chute of all espresso
beans and vacuum out the disc casing.
Also empty the hopper and relock it onto the grinder. Take off the
hopper slide.
When engaging the hopper into the bayonet
ALWAYS release the grind adjustment brakes
and turn both rings to fine. This will block the
adjustment. Turning the grind adjustment ring
repeatedly without loosening the brake could
damage the interlock.
Drop the recommended dose of GRINDZ (35 - 40g) into the empty
grinder hopper. You can also use the cap of the jar for dosing. A full
cap will yield between 35 - 40 grams.
Turn the fineness adjustment to medium and operate as if grinding
coffee beans.
Once complete, we recommend passing twice as much coffee
through to purge any residue.
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HORECA GASTRO GRINDER

7. Maintenance and Repair
Any required repairs may only be conducted by
authorized specialist personnel. For this reason,
please contact a customer service repair facility,
your dealer or us directly as the manufacturer.
Always pull the main plug from the socket be-
fore carrying out maintenance or cleaning
work on the device!
Inspect the grinder regularly for damage, par-
ticularly to the electrical cable, plug,
etc.
7.1 Grinding fineness adjustment with the grinder switched ON
Depending on the wear and tear of the grinding discs or after open-
ing the interior grinder the setting of the finest grind adjustment
has to be checked. Proceed as follows:
7.1.1 Set the grinding fineness adjustment to „0“.
7.1.2 Close and remove the hopper.
7.1.3 Remove the remaining beans from the filler shaft and vacuum
out the grinder casing.
7.1.4 Remove the sealing ring from the filler shaft.
7.1.5 Loosen – do not unscrew – the adjusting screws with the allen
key size 2.5mm.
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HORECA GASTRO GRINDER
Set the cleaning counter back to Zero, if the
grinder was cleaned due to the cleaning alarm.
(see chapter 5.5.9)
6.2 Cleaning the Drip Tray and the Hoppers
The hoppers, their lids and the drip tray (without hopper slides) can
be cleaned in a dishwasher or in a bath of water with dish deter-
gent.
Depending on the dish washing detergent the
transparent plastic parts of the hopper can
slightly fade out.
6.3 Cleaning the Grinder Placement Surface
6.3.1 Pull out the main plug.
6.3.2 Take off the drip tray.
6.3.3 Tilt the grinder to one side and clean the area on which it
stands and the bottom of its base. Both surfaces must be dry and
free of oil and grease.
6.3.4 Reposition the grinder and re-insert the drip tray.
6.4 Cleaning the Grinder Casing
Clean the outside of the casing from time to time using a damp
cloth.
Be carefull of sharp edges when cleaning. There
is a risk of injury.

7.1.14 Only remove the port-a-filter once the grinding process has
been completed. Repeat approximately twice in order to fill the
grinder casing with the re-adjusted ground coffee.
7.2 Taking off the grinder cover
Grind or take out all coffee bean residues. Switch off the grinder
and pull the main plug.Turn both grind adjustment rings to coarse
and fix the brakes. Loosen the lock screw in the front with the allen
screw driver size 2mm. Carefully lift the grinder cover upwards.
7.3 Basic Adjustment of The Interior Grinders
The basic adjustment to a moderately fine setting has been carried
out in the factory using espresso beans. The following markings
have been made on the grinding mechanism (interior):
Red mark 1: Basic adjustment 0,finest setting and minimum grind-
ing disc spacing
Red mark 2: Basic factory setting and also the position for install-
ing and removing the lid, in order to achieve the finest setting after
positioning the lid.
7.1.6 Insert the adjusting handle (service tool) into the filler shaft.
The adjusting handle must engage in the slot into filler shaft’s
transverse bar.
7.1.7 Hold the adjusting handle firmly and push the port-a-filter into
the port-a-filter mounting until the grinder switches on.
7.1.8 Whilst the grinder is running, turn the adjusting handle clock-
wise until a slight ringing sound becomes audible. Now turn the
adjusting handle slightly anti-clockwise until no further ringing
sound can be heard.
It is important to ensure that no grinding disk
„rattling“ can be heard at the finest setting!
Otherwise the service life of the discs will be
significantly reduced.
7.1.9 Tighten the adjusting screws and remove the adjusting handle
from the filler shaft.
7.1.10 Insert the sealing ring again. If the sealing ring is damaged it
must be replaced.
7.1.11 Replace the hopper and allow it to engage in the bayonet and
replace the lock screw. Open the hopper slide.
7.1.12 Reset the desired grinding fineness.
7.1.13 Push your espresso machine’s port-a-filter into the port-a-filter
mounting (pos. 11/12) until the grinding process is switched on.
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HORECA GASTRO GRINDER
Red mark 1 Red mark 2

Never rotate the grinding discs clockwise fur-
ther then the red mark 1, as the grinding discs
may otherwise be damaged.
7.4 Cleaning of the Grinding Mechanism
After opening the grinder cover the grinding mechanism with the
discs can be vacuumed. Check for foreign objects in the grinding
gear.
Do not change any grinder settings. The discs
could be damaged when re-assembling the
grinder.
Carefully vacuum the grinder casing. Take care no to damage any
cables.
7.5 Grinding Disc Exchange
Grinding disc replacement should only be carried out by autho-
rised specialists or a customer service centre. The „Repair manual
K30 TWIN grinding disc replacement and basic adjustment“ can be
downloaded for replacing grinding discs.
Grinding disc replacement may also be carried out using a replace-
ment (AT) integrated grinder. To do this, order an AT integrated
grinder. On receipt of the AT integrated grinder, remove your inte-
grated grinder from the K 30 TWIN according to chapter 7.6 and
install the AT integrated grinder into the K 30 TWIN. Return your old
integrated grinder in the packaging.
7.6 Removal of The Integrated Grinder
For safety reasons the interior grinders are fixed to the casing’s
ground plate.
7.6.1 Disconnect the main plug.Close and remove the hoppers.Place
the grinder on its back and unscrew the hex nuts of the motors
(three each). Store the nuts and washers in a safe place. Re-position
the grinder on its rubber feet
7.6.2 Take off the grinder cover (see chapter 7.2)
7.6.3 Release the motors‘ plug-in connectors. Carefully pull the inte-
grated grinder out of the casing.
Do not change any grinder settings. The discs
could be damaged when re-assembling the
grinder.
8. Trouble Shooting For Operating Faults
8.1 Safety Devices of the Grinder
Thermal overload circuit breaker
The motor of the grinder is protected by a thermal overload circuit
breaker which interrupts the motor‘s electric circuit in the event of
electric overload. The display shows an alarm signal. Pressing the
PROG-button or the right single shot button releases the grinder
back to operation mode.
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HORECA GASTRO GRINDER