KERN MBB User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
email: [e-mail]
Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating instructions
Baby weighing scale/
Toddler weighing scale
KERN MBB
MBB 15K2DNM
Version 1.2
2019-05
GB
MBB-BAPS-e-1912

2 MBB-BAPS-e-1912
GB
KERN MBB
Version 1.2 2019-05
Operating instructions
Baby weighing scale/ Toddler weighing scale
Table of Contents
1Technical Data ............................................................................................... 4
2Declaration of conformity ............................................................................. 4
3Basic Information (General).......................................................................... 5
3.1 Proper use................................................................................................................................. 5
3.2 Improper Use ............................................................................................................................ 5
3.3 Warranty.................................................................................................................................... 6
3.4 Monitoring of Test Resources................................................................................................. 6
4Basic Safety Precautions.............................................................................. 6
4.1 Pay attention to the instructions in the Operation Manual.................................................. 6
5Appliance overview ....................................................................................... 7
6Overview of displays..................................................................................... 8
7Keyboard overview........................................................................................ 9
8Transportation & Storage.............................................................................. 9
8.1 Testing upon acceptance ........................................................................................................ 9
8.2 Packaging / return transport ................................................................................................... 9
9Unpacking, Setup and Commissioning ..................................................... 10
9.1 Installation Site, Location of Use.......................................................................................... 10
9.2 Unpacking ............................................................................................................................... 10
9.3 Scope of supply...................................................................................................................... 11
9.4 Assembly and erection.......................................................................................................... 11
9.5 Assemble the wall bracket .................................................................................................... 12
9.6 Battery operation/ Rechargeable battery operation (optional).......................................... 13
9.6.1 Battery operation...................................................................................................................... 14
9.6.2 Rechargeable battery operation (optional)............................................................................... 16
9.7 Connecting the power supply............................................................................................... 18
9.8 Initial Commissioning ............................................................................................................ 18
10 Menu overview............................................................................................. 18
11 Operation...................................................................................................... 19
11.1 Weighing ................................................................................................................................. 19
11.2 Taring....................................................................................................................................... 20
11.3 Hold function (Standstill function) ....................................................................................... 20
11.4 Toddler weighing scales........................................................................................................ 21
11.4.1 Assembly of toddler weighing scales................................................................................... 22
12 Error messages............................................................................................ 22

MBB-BAPS-e-1912 3
13 Service, maintenance, disposal.................................................................. 23
13.1 Cleaning .................................................................................................................................. 23
13.2 Cleaning / Disinfecting........................................................................................................... 23
13.3 Sterilisation............................................................................................................................. 23
13.4 Service, maintenance............................................................................................................. 23
13.5 Disposal................................................................................................................................... 23
14 Instant help................................................................................................... 24
14.1 Adjustment.............................................................................................................................. 25
14.2 Adjustment controls............................................................................................................... 27
14.2.1 Menu overview in service mode (adjustment switch in adjustment position) ...................... 27
14.3 Navigation in the menu.......................................................................................................... 28
14.3.1 Exit menu and save.............................................................................................................. 28
14.4 Menu overview:....................................................................................................................... 29

4 MBB-BAPS-e-1912
1 Technical Data
KERN (Type) MBB 15K2DNM
Model MBB 15K2DM
Display 6-digit
Weighing range (max)
6 kg; 15 kg
Reproducibility 2 g; 5 g
Linearity 2 g; 5 g
Display
LCD 24mm digit height
Recommended adjustment
weight, (Class) 15 kg
(M1)
Stabilization time (typical) 2 – 3 sec.
Warm-up time 10 min
Operating temperature
+ 5° C …. + 35° C
Storage temperature - 20°C … + 60°C
Humidity of air max. 80 % (not condensing)
Electric Supply Line adapter 12V / 500 mA or 15 V / 300 mA
Battery operation 6 x 1.5V, size AA
Operating life 50 h
Auto Off After 3 min without load change, adjustable
Housing display unit
(B x D x H) mm
210 x 110 x 45
Weighing pan (WxD) mm 560 x 295
Weight kg (net) 3.6
Rechargeable battery Working life 50 h
Loading time 14 h
7.2 V / 2000 mA
2 Declaration of conformity
To view the current EC/EU Declaration of Conformity go to:
www.kern-sohn.com/ce

MBB-BAPS-e-1912 5
3 Basic Information (General)
3.1 Proper use
The scales are used for determining the body weights of infants and small children.
The value may be read after the scale stabilizes.
The scales are designed for continuous use.
To prevent babies/toddlers lying/standing on the weighing pan
from falling off the scale, they must be watched all the time.
Please observe note on weighing pan!
3.2 Improper Use
Do not use these scales for dynamic weighing processes.
Do not leave permanent load on the balance. This may damage the measuring
system.
Impacts and overloading exceeding the stated maximum load (max) of the weighing
pan, minus a possibly existing tare load, must be strictly avoided. This could cause
damage to the balance.
Never operate balance in explosive environment. The serial version is not explosion
protected. It should be noted that a flammable mixture of anesthetics and oxygen or
laughing gas may occur.
The structure of the balance may not be modified. This may lead to incorrect
weighing results, safety-related faults and destruction of the balance.
The balance may only be used according to the described conditions. Other areas of
use must be released by KERN in writing.
Do not use the scales for determining body weight in medicine.

6 MBB-BAPS-e-1912
3.3 Warranty
Warranty claims shall be voided in case
Our conditions in the operation manual are ignored
The appliance is used outside the described uses
The appliance is modified or opened
mechanical damage and damage caused by media, liquids,
Natural wear and tear
The appliance is improperly set up or incorrectly electrically connected
The measuring system is overloaded
Dropping the balance
3.4 Monitoring of Test Resources
In the framework of quality assurance the measuring-related weighing properties of
the balances and, if applicable, the testing weight, must be checked regularly. The
responsible user must define a suitable interval as well as type and scope of this test.
Information is available on KERN’s home page (www.kern-sohn.com with regard to
the monitoring of balance test substances and the test weights required for this. In
KERN’s accredited DKD calibration laboratory test weights and balances may be
calibrated (return to the national standard) fast and at moderate cost.
For balances with height measuring rods, we recommend a metrological examination
of the accuracy of the height measuring rod, however, this is not mandatory as the
determination of human body height involves rather large, intrinsic inaccuracies.
4 Basic Safety Precautions
4.1 Pay attention to the instructions in the Operation Manual
Carefully read this operation manual before
setup and commissioning, even if you are
already familiar with KERN balances.

MBB-BAPS-e-1912 7
5 Appliance overview
1. Weighing pan
2. Bubble level
3. Display unit
4. Wall bracket
5. Toddler weighing scales

8 MBB-BAPS-e-1912
6 Overview of displays
MBB 15K2DNM
Display Designation Description
1 Zeroing display Should the balance not display exactly
zero despite empty scale pan, press the
button. Your balance will be set to
zero after a short standby time.
2 Stability display Scales are in a steady state
3 Power supply connected Illuminates in the event of power supply
via mains adaptor
4
HOLD function active Hold/Save function active
5
Net weight display Net weight will be displayed
6
Weight value display Current weight value will be displayed
0

MBB-BAPS-e-1912 9
7 Keyboard overview
Button Designation Function
ON/OFF-switch Turn on/off
Zero setting
key Balance will be reset to 0.0 kg. Possible up to max. 2% of maximum load for
verified scales or 2 % or 100% of maximum load for
all other scales (selectable via menu)
HOLD button Hold function/Calculation of a stable weight value
TARE button Tare balance
8 Transportation & Storage
8.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
8.2 Packaging / return transport
Keep all parts of the original packaging for a possibly required
return.
Only use original packaging for returning.
Prior to dispatch disconnect all cables and remove loose/mobile
parts.
Reattach possibly supplied transport securing devices.
Secure all parts such as the weighing pan, power unit etc. against
shifting and damage.

10 MBB-BAPS-e-1912
9 Unpacking, Setup and Commissioning
9.1 Installation Site, Location of Use
The balances are designed in a way that reliable weighing results are achieved in
common conditions of use. You will work accurately and fast, if you select the right
location for your balance.
On the installation site observe the following:
Place scales on a stable, even surface
Avoid extreme heat as well as temperature fluctuation caused by installing next to
a radiator or in the direct sunlight;
Protect the balance against direct draughts due to open windows and doors;
Avoid jarring during weighing;
Protect the balance against high humidity, vapors and dust;
Do not expose the device to extreme dampness for longer periods of time. Non-
permitted condensation (condensation of air humidity on the appliance) may occur
if a cold appliance is taken to a considerably warmer environment. In this case,
acclimatize the disconnected appliance for ca. 2 hours at room temperature.
Avoid static charge of the balance and of the person to be weighed.
Avoid contact with water.
Major display deviations (incorrect weighing results) may be experienced should
electromagnetic fields (e.g. due to mobile phones or radio equipment), static
electricity accumulations or instable power supply occur. In that case, the location
must be changed.
9.2 Unpacking
Remove the individual components of the balance or the complete balance from the
packaging with care and install at the intended location. When using the power pack,
ensure that the power cable does not produce a risk of stumbling.

MBB-BAPS-e-1912 11
9.3 Scope of supply
Balance
Power unit
Wall bracket
Operating instructions
9.4 Assembly and erection
Make sure that the weighing pan/weighing plate is exactly horizontal.
Set the adjustable rubber feet of the baby scale in such a way that the air bubble
inside the spirit level (on the right next to the cable outlet to the control unit) is in the
centre.
1. Push the front of the weighing
pan (arrow) up to the stop
across the weighing platform.
2. Screw in the locking screw at
the bottom of the weighing pan
into the mount.

12 MBB-BAPS-e-1912
3. Then screw in the
corresponding locking screw to
achieve a tight fit.
4. Use the supplied knurled
screws to attach the wall
bracket to the terminal.
9.5 Assemble the wall bracket

MBB-BAPS-e-1912 13
9.6 Battery operation/ Rechargeable battery operation (optional)
(only models with battery operation and rechargeable battery operation)
On models where the back of the display unit is not directly accessible, remove the
two black rotary knobs from both sides of the display unit in order to open the battery
compartment and remove the display unit from the holder. Remove battery cover
from under the display unit. Insert 6 x 1.5V AA batteries into the holder. Replace
battery cover and screw the display unit back into the holder using the black rotary
knobs.
In order to save the battery, the balance switches automatically off after 3 minutes
without weighing. Further shutdown times can be set in the Menu (Function "A.OFF"),
see Section 11.
Connection CN 3 for
rechargeable battery
Connection CN 4 for
batteries (AA x 6)

14 MBB-BAPS-e-1912
9.6.1 Battery operation
Lift-off the battery cover on
the back
of the display unit
Carefully take out the battery holder
(1)
Insert 6 batteries (AA).
Ensure that the batteries are
inserted in the correct direction

MBB-BAPS-e-1912 15
Insert battery holder with the inserted
batteries into the display unit
Ensure that the cables are not
squeezed
Close the battery cover
If the batteries are run down, "LO" appears in the display. To turn
off scales, press the button and immediately change the
batteries.
If the balance is not used for a longer time, take out the batteries
and store them separately. Leaking battery liquid could damage
the balance.
OFF
ON

16 MBB-BAPS-e-1912
9.6.2 Rechargeable battery operation (optional)
When an optional rechargeable battery is used, proceed as follows:
On models where the back of the display unit is not directly accessible, remove the
two black rotary knobs from both sides of the display unit in order to open the battery
compartment and remove the display unit from the holder.
Lift-off the battery cover on
the back
of the display unit
Carefully take out the battery holder
(1)
Carefully pull-out plug (2) from the
connection CN 4 (3)
1

MBB-BAPS-e-1912 17
Carefully insert the rechargeable
battery block and insert plug into
connection CN 3
Ensure that the cables are not
squeezed
Close the battery cover
If the rechargeable battery is exhausted, „LO“ is displayed. The
rechargeable battery is loaded via the provided plug-in power
supply unit (loading time 14 h for a complete loading).
If the balance is not used for a longer time, take out the
rechargeable battery and store it separately. Leaking liquid could
damage the balance.

18 MBB-BAPS-e-1912
9.7 Connecting the power supply
•Power is supplied by the external power unit which also serves to isolate the
mains supply from the scale. The stated voltage value must be the same as
the local voltage.
•It is necessary to apply only admitted original power supply adaptors of KERN
company.
•The scales can be supplied only by the delivered power supply. It is prohibited
to supply it via a PC.
9.8 Initial Commissioning
In order to obtain exact results with the electronic balances, your balance must have
reached the operating temperature (see warming up time chap. 1). During this
warming up time the balance must be connected to the power supply (mains,
accumulator or battery) and be switched on.
The accuracy of the balance depends on the local acceleration of gravity.
The value of gravity acceleration is shown on the type plate.
10 Menu overview
a
z000 ��
Start balance by pressing
Press for 3 sec., “SETUP“ will be displayed.
Select parameter by using ( ) and ( ), as
described.
Confirm the selected parameter by pressing ( ).
Function
Settings
Description
SEtuP
A. oFF
Automatic turning
off, Auto Off
function
180 s
Automatic turning off after 3 minutes
240 s
Automatic turning off after 4 minutes
300 s
Automatic turning off after 5 minutes
oFF
Automatic turning off turned off
120 s
Automatic turning off after 2 minutes
OFF
ON
SETUP
TARE HOLD
TARE

MBB-BAPS-e-1912 19
burr
Acoustic signal
on
Acoustic signal turned on
oFF
Acoustic signal turned off
End
Leaving menu after pressing button
11 Operation
11.1 Weighing
Start balance by pressing
The balance carry out a segment test, then the program
version is displayed.
The scales are ready for operation as soon as the weight
display for “0.0kg“ has appeared.
The button can be used to set the balance to zero at any
time.
Put baby/toddler in the centre of the weighing pan/weighing
plate.
Wait for the rest position display , then read the weighing
result.
If the baby/toddler is heavier than the maximum weighing
range, “Err” (overload) will appear on the display screen.
HOLD
0
0.0
OFF
ON

20 MBB-BAPS-e-1912
11.2 Taring
The tare weight of any preloads can be deducted by pressing a button so that the
actual weight of the baby/toddler is displayed in subsequent weighings.
Put object (such as towel or padding) on the weighing pan.
Press , the zero display appears.
Put baby on the weighing pan/weighing plate.
Wait until the standstill display appears, then read the
weighing result.
The balance is able to only store one taring value.
When the balance is unloaded the saved taring value is
displayed with negative sign.
To delete the stored tare value, release scales and press .
11.3 Hold function (Standstill function)
The balance has an integrated standstill function (mean value calculation). This
allows correct weighing determination of a baby/toddler although the latter is not
keeping still on the scales.
Start balance by pressing
Wait for the rest position display .

Put baby/toddler in the centre of the weighing pan/plate.
Press
A triangle starts to flash in the display, during this time the
balance will record several measuring values and will then
display the calculated average value.
0.5
0
0.0
TARE
4.0
TARE
0
0.0
OFF
ON
HOLD
2.3
HOLD