KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@kern-sohn.com
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating instructions
Baby scale
KERN MBC-M
Version 1.2
01/2013
GB
MBC-M-BA-e-1312
GB
KERN MBC-M
Version 1.2 01/2013
Operating instructions
Baby scale
Contents
1 Technical data ................................................................................................ 4
2 Declaration of conformity ............................................................................. 5
2.1 Explanation of the graphic symbols ....................................................................................... 5
3 Appliance overview ....................................................................................... 7
3.1 Overview of display .................................................................................................................. 8
3.2 Keyboard overview ................................................................................................................... 9
4 Basic Information (General) ........................................................................ 10
4.1 Specific function ..................................................................................................................... 10
4.2 Proper use ............................................................................................................................... 10
4.3 Improper Use .......................................................................................................................... 11
4.4 Warranty .................................................................................................................................. 11
4.5 Monitoring of Test Resources ............................................................................................... 11
5 Basic Safety Precautions ............................................................................ 12
5.1 Pay attention to the instructions in the Operation Manual ................................................ 12
5.2 Personnel training .................................................................................................................. 12
5.3 Preventing contamination ..................................................................................................... 12
6 Electromagnetic compatibility (EMC) ......................................................... 13
6.1 General hints ........................................................................................................................... 13
6.2 Electromagnetic interferences .............................................................................................. 14
6.3 Electromagnetic noise immunity .......................................................................................... 15
6.3.1 Crucial features of performance ............................................................................................... 17
6.4 Minimum distances ................................................................................................................ 17
7 Transport and storage ................................................................................. 18
7.1 Testing upon acceptance ...................................................................................................... 18
7.2 Packaging / return transport ................................................................................................. 18
2 MBC-M-BA-e-1312
8 Unpacking, Setup and Commissioning ..................................................... 19
8.1 Installation Site, Location of Use .......................................................................................... 19
8.2 Unpacking ............................................................................................................................... 19
8.3 Scope of delivery .................................................................................................................... 20
8.4 Placing ..................................................................................................................................... 20
8.5 Battery operation is possible by obtaining an optional battery power pack. .................. 21
8.6 Mains connection ................................................................................................................... 22
8.7 Initial Commissioning ............................................................................................................ 22
9 Operation ...................................................................................................... 23
9.1 Weighing ................................................................................................................................. 23
9.2 Taring ....................................................................................................................................... 23
9.3 Hold function (Standstill function) ....................................................................................... 24
9.4 Feeding function (control of weight gain)............................................................................ 25
9.5 Show another decimal place (not verified value) ................................................................ 25
9.6 Use the optional size measurement device ......................................................................... 26
10 Menu ............................................................................................................. 27
10.1 Navigation in the menu .......................................................................................................... 27
10.2 Menu overview ........................................................................................................................ 28
11 Error messages ............................................................................................ 29
12 Service, maintenance, disposal .................................................................. 30
12.1 Cleaning .................................................................................................................................. 30
12.2 Cleaning / disinfecting ........................................................................................................... 30
12.3 Service, maintenance ............................................................................................................. 30
12.4 Disposal ................................................................................................................................... 30
13 Instant help ................................................................................................... 31
14 Verification ................................................................................................... 32
14.1 Verification validity period (current status in G) ................................................................. 33
15 Adjustment ................................................................................................... 34
MBC-M-BA-e-1312 3
1 Technical data
KERN
MBC 15K2DM
MBC 20K10M
Weighing range (max)
6 kg / 15 kg
20 kg
Minimum load (Min)
40 g / 100 g
200 g
Readability (d)
2 g / 5 g
10 g
Verification value (e)
2 g / 5 g
10 g
Reproducibility
2 g / 5 g
10 g
Linearity ±
2 g / 5 g
10 g
Display
LCD with 25mm high digits
Recommended
adjustment weight, not
added (class)
15 kg
(M1)
20 kg
(M1)
Stabilization time (typical)
2 sec.
Warm-up time
10 min
Operating temperature
+ 0° C …. + 40° C
Humidity of air
max. 80 % (not condensing)
Input Voltage
220 V – 240 V AC, 50 Hz
Auto Off
After “x“ min adjustable without load change
Dimensions fully mounted
(W x D x H) mm
890 x 460 x 170
(incl. integrated height measuring device)
Dimensions display unit
(BxHxT) mm
200 x 125 x 58
Baby weighing pan
(WxDxH) mm
600 x 280 x 55
Weight kg (net)
5.5
Rechargeable battery
operation
optional
Verification according to
2009/23/EG
Medical grade III
Medical product in
accordance with
93/42/EEC
Category I with measuring function
Height measuring rod,
(optional)
Measuring range: 40 - 80 cm
4 MBC-M-BA-e-1312
2 Declaration of conformity
0297
93/42/EEC
2009 / 23 / EG
Non-automatic Weighing Instruments Directive
This EC verification mark indicates that these scales are in
conformity with EC Directive 2009 / 23 / EC for NonAutomatic Weighing Instruments. Weighing instruments
bearing this mark are approved for medical purposes within the
European Union.
WF 132795
Designation of the serial number of every device, applied at the
device and on the packaging
(Number as an example)
2012-10
Identification of the manufacturing date of the medical product.
(Year and month here as example)
“Please note the accompanying documents“
or “Please note operating instructions”
“Please note operating instructions”
“Please note operating instructions”
M
year
0103
Declaration of conformity: see separate document showing serial number of device
CE marking:
2.1 Explanation of the graphic symbols
MBC-M-BA-e-1312 5
Kern & Sohn GmbH
D–72336 Baligen,Germany
www.kern-sohn.com
Identification of manufacturer of medical product including
address
“Electro-medical appliance“
with attachment for type B
Device protection category II
Dispose of old appliances separately from your household
waste!
Instead, take them to communal collection points.
Temperature limit indicating the upper and the lower limit
(storage temperature on packaging)
(Temperature serving as an example)
12 V DC / 500 mA
Display of supply voltage for scales with polarity display.
6 MBC-M-BA-e-1312
3 Appliance overview
1. Height measuring rod (optional)
2. Bubble level
3. Display Unit
4. LED
5. Baby weighing pan
6. Weighing pan
7. Rubber feet (height adjustable)
8. Mains connection
9. Battery compartment
10. RS232
MBC-M-BA-e-1312 7
3.1 Overview of display
Display
Description
Description
GROSS
Gross weight display
Lights up during indication of the gross
weight of the baby (after drinking)
NET
Net weight display
Lights up during indication of the net weight
of the baby (before drinking)
Illuminated after weighing scale was tared
ZERO
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.
STABLE
Stability display
Scales are in a steady state
DRINK
DRINK function
Is displayed with active drink function
HOLD
HOLD function
Is displayed with active hold function
Rechargeable battery
symbol
Lights when the voltage drops below the
prescribed minimum.
Lights when the rechargeable battery
capacity is almost exhausted.
Lights when the rechargeable battery is
fully charged.
8 MBC-M-BA-e-1312
3.2 Keyboard overview
Key
Description
Function
ON/OFF-switch
Turn on/off
Zeroing key
Weighing scale will be reset to „0.0“ kg.
For numeric entry:
Change decimal place
HOLD button
Hold function
TARE button
Tare balance
Feeding Function
key
Differential weighing before and after the baby drinks
The net weight of the baby will be shown:
Before drinking
In menu:
Call up menu
How to select menu items
For numeric entry:
Edit numeric value
The gross weight is displayed:
After drinking
In menu:
Confirm selection
For numeric entry:
Confirm numerical value
MBC-M-BA-e-1312 9
4 Basic Information (General)
Weighing instruments have to be verified for the purposes stated
below in accordance with Directive 2009/23/EC. Article 1,
paragraph 4. “Determination of mass in the practice of medicine
that is, weighing patients for reasons of medical supervision
during medical surveillance, examination and treatment.”
Indication
Determining the body weight in the medical practice area.
Operated as “non-automatic weighing instrument” which
means that you have to carefully put he baby in the centre of
the weighing pan. Once a steady display value is shown, you
can read the weight value.
Contra-
indication
No contraindication known
Scales fitted with a serial interface may only be connected to
appliances in compliance with Directive EN60601-1.
To prevent babies lying on the weighing pan from falling off the
scale, they must be watched all the time. Please observe note
on weighing pan!
4.1 Specific function
4.2 Proper use
These scales serve as a means of determining the weight of babies in medical
treatment rooms. The scales are suitable for recognising, preventing and controlling
illnesses.
10 MBC-M-BA-e-1312
4.3 Improper Use
Do not use these scales for dynamic weighing processes.
Do not leave permanent load on the weighing pan. This may damage the measuring
system.
-Impacts and overloading exceeding the stated maximum load (max) of the weighing
plate, 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 anaesthetics 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.
4.4 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
4.5 Monitoring of Test Resources
In the framework of quality assurance the measuring-related weighing properties of
the balance 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.
MBC-M-BA-e-1312 11
5 Basic Safety Precautions
5.1 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.
All language versions contain a non-binding
translation.
The original German is binding.
5.2 Personnel training
The medical staff must apply and follow the operating instructions for proper
use and care of the product.
5.3 Preventing contamination
To prevent cross-contamination (fungal skin infections, …), clean the baby
weighing pan or weighing platform every time after weighing.
Recommendation: after a weighing procedure that could potentially result in
contamination (e. g. after weighing that involves direct skin contact).
12 MBC-M-BA-e-1312
6 Electromagnetic compatibility (EMC)
6.1 General hints
The installation and use of this baby scale MBC-M requires special
precautionary measures as outlined in the EMC information below.
Devices emitting high frequency signals (mobile telephones, radio
transmitters, radio receivers) may cause interference in the medical
device. For that reason do not use them near the medical device.
Chapter 6.4 contains details about recommended minimum distances.
This device complies with the limits set for medical electrical devices of group 1,
class B (as per EN 60601-1-2).
Electromagnetic compatibility (EMC) describes a device’s ability to perform reliably
within an electromagnetic environment without causing inadmissible electromagnetic
interference at the same time. Amongst other things, such disturbances may be
emitted by connecting cables or the air.
Inadmissible disturbances from the environment may result in incorrect displays,
inaccurate measured values or incorrect behaviour of the medical device. By the
same token the medical device may in some cases cause such disturbances in other
devices. To eliminate problems of that kind, we recommend you to take one or
several of the measures listed below:
Change the alignment or distance of the device to the source of EMI.
Install or use the baby scale MBC-M at a different location.
Connect the baby scale MBC-M to a different power source.
For further questions please contact our customer services.
Disturbances may be caused by improper modification or add-ons to the device or
not recommended accessories (such as power units or connecting cables). The
manufacturer will not be responsible for these. Modifications may also result in a loss
of authorisation relating to the use of the device.
MBC-M-BA-e-1312 13
6.2 Electromagnetic interferences
Guidelines and manufacturer’s declaration – electromagnetic interferences
The baby scale MBC-M is designed for use in an electromagnetic environment that meets the
requirements stated below. The customer or user of the medical electrical device must ensure that
operation takes place in such an environment.
Emitted interference
measurements
Conformity
Electromagnetic environment guideline
HF emissions
as per CISPR 11 / EN 55011
Group 1
The baby scale MBC-M uses HF
energy merely for its internal working.
Its HF emission therefore is very low
and it is highly unlike to interfere with
adjacent electronic devices.
HF emissions
as per CISPR 11 / EN 55011
Class B
The baby scale MBC-M is designed
for use in all equipment including
those in living areas and those
connected directly to the public power
grid that also supplies buildings used
for living purposes.
Emission of harmonics
as per IEC 61000-3-2
Class A
Emission of voltage fluctuations /
flicker
as per IEC 61000-3-3
Conforms with
Do not put the baby scale MBC-M directly next to other devices and do not stack it
with other devices. If this type of operation is necessary, observe the baby scale
MBC-M to ensure normal operation in such an arrangement.
14 MBC-M-BA-e-1312
6.3 Electromagnetic noise immunity
Guidelines and manufacturer’s declaration - electromagnetic noise immunity
The baby scale MBC-M is designed for use in an electromagnetic environment that meets the
requirements stated below. The customer or user of the medical electrical device must ensure that
operation takes place in such an environment.
Noise immunity tests
IEC 60601 test level
Conformity
Electromagnetic
environment - guideline
Discharge static
electricity (DSE)
as per IEC 61000-4-2
± 6 kV contact discharge
± 8 kV air discharge
± 6 kV
± 8 kV
Floors should be made of
wood or concrete or tiled with
ceramic tiles. If floors are
covered with synthetic
material, relative air humidity
must be at least 30%.
Fast transient electrical
disturbances / bursts
as per IEC 61000-4-4
± 2 kV for power lines
+ 1 kV for input and
output lines
± 2 kV
+ 1 kV
The quality of the supply
voltage should match that of
the typical business or hospital
environment.
Impulse voltages /
surges
as per IEC 61000-4-5
± 1 kV voltage
Live wire - live wire
± 2 kV voltage
Live wire - earth
± 1 kV
Inapplicable
The quality of the supply
voltage should match that of
the typical business or hospital
environment.
Voltage dips, short-term
disruptions and
fluctuations in supply
voltage
as per IEC 61000-4-11
< 5 %
(> 95 % dip of )
for ½ period
40 %
(> 60 % dip of )
for 5 periods
70 %
(> 30 % dip of )
for 25 periods
< 5 %
(> 95 % dip of )
for 5 s
Compliance
with
requirements
under all
postulated
conditions
Controlled
switch off
Return to
undisturbed
situation after
user
intervention.
The quality of the supply
voltage should match that of
the typical business or hospital
environment. Where the user
of the baby scale MBC-M
demands continuous operation
even during disruptions to the
power supply, we recommend
powering the baby scale MBCM by no-break power supply or
battery.
Magnetic field for supply
frequency
(50/60 Hz)
as per IEC 61000-4-8
3 A/m
3 A/m
50/60 Hz
Magnetic fields for the supply
frequency should match the
typical values found in the
particular business or hospital
environment.
NOTE equals AC line voltage prior to application of test level.
MBC-M-BA-e-1312 15
Guidelines and manufacturer’s declaration - electromagnetic noise immunity
The baby scale MBC-M is designed for use in an electromagnetic environment that meets the
requirements stated below. The customer or user of the medical electrical device must ensure that
operation takes place in such an environment.
Noise immunity tests
IEC 60601 test
level
Conformity
Electromagnetic environment guideline
Conducted HF
disturbance variables
as per IEC 61000-4-6
3
150 kHz to 80 MHz
3 V
Do not use portable or mobile radio sets
nearer to the baby scale MBC-M or its
wires than the distance recommended
as safety distance which is calculated
according to the equation relevant for its
transmission frequency.
Recommended safety distance:
for 80 MHz to 800 MHz
for 800 MHz to 2.5 GHz
Use P as rated capacity of radio
transmitter in Watt (W) as per details
given by the radio transmitter
manufacturer and d as recommended
safety distance in metres (m).
The field intensity of stationary radio
transmitters should for all frequencies be
lower according to an in situ a
examination than the conformity level.b
Interference may occur near devices
bearing the symbol below.
Emitted HF
disturbance variables
as per IEC 61000-4-3
3
80 MHz to 2.5 GHz
3 V/m
NOTE 1 Higher frequency range applies to 80 MHz and 800 MHz.
NOTE 2 These guidelines may not be applicable in all cases.
The spread of electromagnetic variables is influenced by absorption and reflections in
buildings, objects and humans.
a
The field intensity of stationary radio transmitters such as base stations of wireless telephones and
mobile radio sets, amateur radio stations, AM and FM radio and television stations cannot be reliably
predicted in advance. To determine the electromagnetic environment in respect of stationary
transmitters, you should consider a study of electromagnetic phenomena at the location. If the
measured field intensity at the location where the baby scale MBC-M is to be used exceeds the
conformity level above, you should observe the baby scale MBC-M in order to ensure normal
operation. If you observe unusual features of performance you may have to take additional measures
such as a change in alignment or a different location for the baby scale MBC-M.
b
For a frequency range of 150 kHz to 80 MHz field intensity should be less than 3 V/m.
16 MBC-M-BA-e-1312
6.3.1 Crucial features of performance
Note:
The baby scale MBC-M does not have any crucial features of performance
as per IEC 60601-1. The system may be subject to interference by other
devices even if these devices conform to current emission requirements as
per CISPR.
Recommended safety distances between portable and mobile HF
telecommunication devices and the medical device
The baby scale MBC-M is designed for use in an electromagnetic environment in which HF
disturbance variables are controlled. The customer or user of the medical electrical device can help
avoiding electromagnetic disturbances by keeping the minimum distance between portable and mobile
HF telecommunication devices (transmitters) and the medical device – depending on the output
performance of the communication device, as stated below.
Rated capacity of
transmitter
W
The safety distance depends on the transmission frequency
m
150 kHz to 80 MHz
80 MHz to 800 MHz
800 MHz to 2.5 GHz
0.01
0.12
0.12
0.23
0.1
0.38
0.38
0.73
1
1.20
1.20
2.30
10
3.80
3.80
7.30
100
12.00
12.00
23.00
For transmitters with a maximum rated capacity not stated in the table above you can calculate the
recommended safety distance in metres (m) yourself by using the equation belonging to each column,
whereby P equals the maximum rated capacity of the transmitter in Watt (W) as per details provided
by the transmitter manufacturer.
NOTE 1 Higher frequency range applies to 80 MHz and 800 MHz.
NOTE 2 These guidelines may not be applicable in all cases.
The spread of electromagnetic variables is influenced by absorption and reflections in
buildings, objects and humans.
6.4 Minimum distances
MBC-M-BA-e-1312 17
7 Transport and storage
7.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
7.2 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.
18 MBC-M-BA-e-1312
8 Unpacking, Setup and Commissioning
8.1 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, vapours 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.
8.2 Unpacking
Take the balance out of their packaging and place it at the intended position. When
using the power pack, ensure that the power cable does not produce a risk of
stumbling.
MBC-M-BA-e-1312 19
8.3 Scope of delivery
Balance
Power pack unit (EN 60601-1 attestation of conformity)
Operating instructions
8.4 Placing
Carefully remove the balance from the packaging, remove plastic cover and setup
balance at the intended workstation.
Make sure that all transport locking devices are removed
To loosen the transport guard screw out transport screw [1] anticlockwise.
For transportation carefully screw-in transport screw clockwise till to the stopper
and then fix it using locknut.
20 MBC-M-BA-e-1312
Level balance with foot screws until the air bubble of the
water balance is in the prescribed circle.
Voltage has dropped below prescribed minimum.
Rechargeable battery very low.
Rechargeable battery completely reloaded
Levelling
8.5 Battery operation is possible by obtaining an optional battery power pack.
Open the battery compartment cover (1) at the base of the display unit and insert the
rechargeable battery pack. Charge the battery for at least 12 hours before initial use.
The appearance of the symbol in the weight display indicates that the battery
packs is almost exhausted. The weighing scale will remain ready for operation for a
few more minutes before switching off in order to save battery. Load rechargeable
battery.
If the balance is not used for a longer time, take out the battery pack and store it
separately. Leaking liquid could damage the balance.
MBC-M-BA-e-1312 21
In order to obtain exact results with the electronic balances, your balance must have
reached the operating temperature (see warming up time chap. 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.
8.6 Mains connection
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.
Only approved genuine KERN power supply units may be used in compliance with
Directive EN 60601-1.
The small sticker attached to the side of the display unit indicates the power port:
The LED remains illuminated as long as the weighing scale remains connected to the
mains.
The LED display provides information about the battery's charging status.
Green: battery is fully charged
Blue: battery is charging
8.7 Initial Commissioning
22 MBC-M-BA-e-1312
9 Operation
9.1 Weighing
Start balance by pressing
The balance will carry out a self-test
The scales are ready for operation as soon as the weight
display for “0.0kg“ has appeared.
However, you can reset the weighing scale to zero by pressing
the key.
Put the baby in the centre of the weighing pan.
Wait for stability display "STABLE", then read the weighing
result.
If the baby is heavier than the max. weighing range, the display
shows "oL" (overload) and a beep sounds.
The tare weight of any preloads can be deducted by pressing a button so that the
actual weight of the baby is displayed in subsequent weighings.
(example)
Put object (such as towel or padding) on the weighing pan.
Wait until stability display „STABLE“ appears
Press , the zero display appears.
(example)
Put baby on the weighing pan.
Wait until the stability display „STABLE“ appears, then read
the weighing result. „NET” is shown at the bottom on the left.
9.2 Taring
MBC-M-BA-e-1312 23
When the balance is unloaded the saved taring value is
displayed with negative sign.
To delete the stored tare value, release scales and press .
The balance has an integrated standstill function (mean value calculation). This
allows one to weigh the baby exactly, even if it is not restful in the weighing pan.
Start balance by pressing .
Wait for stability display „STABLE to appear.
Press button, „--------„ is displayed. In addition the
„HOLD“ symbol appears.
(Beispiel)
Put the baby in the centre of the weighing pan. The weight of
the baby will be displayed and „frozen“.
After unloading the balance, the weighing value remains
displayed for approx. 10 seconds, than the balance returns
automatically into the weighing mode.
The „HOLD“ symbol disappears.
9.3 Hold function (Standstill function)
24 MBC-M-BA-e-1312
9.4 Feeding function (control of weight gain)
The baby's weight can be saved before feeding. Then the weight gain can be
calculated by pressing a button.
Start balance by pressing .
Stability display await "STABLE"
(example)
Place the baby on the weighing pan center before feeding.
After the stability display shows STABLE", press . The
weight of the baby is recorded and stored. Display "DRINK"
lights up.
Take the baby from the weighing pan.
Place the baby on the scale pan after feeding.
Press , the difference between the weight and the value
before and after breastfeeding is displayed.
By pressing the button several times, the balance returns to
the normal weighing mode.
9.5 Show another decimal place (not verified value)
Press and hold for about 2 s whilst weighed result is being shown. The second
decimal place will be shown for approx. 5 s.
MBC-M-BA-e-1312 25
9.6 Use the optional size measurement device
For further information (for example, installation), refer to the instruction
manual that comes with the height measurement.
The scale has the ability to determine not only the weight but also the body height
using the optional height measuring rod.
For this purpose proceed as follows:
Put the head stopper (left) (1) to zero (2)
Put the baby in the centre of the weighing pan.
Move the height measuring rod (3) carefully to the right until the head stopper
(3) gently touches the baby’s head
With the right hand push the foot stopper (right) (4) carefully to the soles of the
baby
On the scale read the baby’s size.
26 MBC-M-BA-e-1312
10 Menu
Access to service menu „tCH“is locked in verified balances.
To disable the access lock, destroy the seal and actuate the
adjustment switch. For position of adjustment switch, see
chap. 13.
Attention:
After destruction of the seal the weighing system must be reverified by an authorised agency and a new verification
wire/seal mark fitted before it can be reused for applications
subject to verification.
10.1 Navigation in the menu
Call up menu
Turn on the scale during the self-test press , the first
function [F1 oFF] is displayed.
Select function
With help of , the individual functions can be selected
one after the other.
Change settings
Confirm selected function by . The current setting will
be displayed.
Select the desired setting with and press to
confirm or to reject, the balance returns to the menu.
Exit menu/
Return to
weighing mode
Press , the balance will return to weighing mode.
MBC-M-BA-e-1312 27
10.2 Menu overview
Function
Settings
Description
F1 oFF
Automatic
cutout
Auto Off
oFF 0*
Automatic shutdown off
oFF 3
Automatic shutdown after 3 sec
oFF 5
Automatic shutdown after 5 sec
oFF 15
Automatic shutdown after 15 sec
oFF 30
Automatic shutdown after 30 sec
F2 bk
Background
illumination
of display
bl on
Back lighting for display on
bl oFF
Display background illumination off
bl AU*
Backlighting for display will come on automatically
as soon as the weighing scale is operated.
F3 Str
Subsequent tare
value locked in
devices with
type approval
certificate.
Str on
Following tare ON
Str oFF*
Following tare OFF
tCH
Service menu
Pin
If display shows "Pin" adjust switch.
Then press , ., subsequently.
P1 Spd
Display speed
15*
Not documented
30
60
7.5
P2 CAL
Adjustment, see chap. 14
P3 Pro
tri
Not documented
CoUnt
Not documented
rESEt
Reset weighing scale to factory setting
SEtGrA
Not documented
* default setting
28 MBC-M-BA-e-1312
11 Error messages
Display
Description
Zero range exceeded
(on start-up or when pressing the key)
Load on weighing pan
Excess load, during zero setting of weighing scale
Incorrect adjusting process
Fault on load cell
Value outside the A/D changer range
Damaged weighing cell
Damaged electronics
Should other error messages occur, switch balance off and then on again. If the error
message remains inform manufacturer.
MBC-M-BA-e-1312 29
12 Service, maintenance, disposal
Before any maintenance, cleaning and repair work disconnect the
appliance from the operating voltage.
Do not spray disinfectants onto appliance.
Make sure that disinfectant does not penetrate the interior of
the appliance.
Remove dirt immediately.
12.1 Cleaning
12.2 Cleaning / disinfecting
Clean weighing pan and housing with a household cleaner or a commercial
disinfectant. Please follow manufacturer’s instructions.
Do not use abrasive or aggressive cleaners such as spirits or alcohol or similar as
they might damage the high-quality surface.
The prevention of cross-contamination (fungal skin infections,……) requires regular
cleaning of the weighing pan. Recommendation: after a weighing procedure that
could potentially result in contamination (e. g. after weighing that involves direct skin
contact).
12.3 Service, maintenance
The appliance may only be opened by trained service technicians who are authorized
by KERN.
Disconnect the scales before opening.
12.4 Disposal
Disposal of packaging and appliance must be carried out by operator according to
valid national or regional law of the location where the appliance is used.
30 MBC-M-BA-e-1312
13 Instant help
In case of a fault in the program sequence, the balance should be shortly switched
off. The weighing process must then be restarted from the beginning.
Failure:
Possible causes:
The displayed weight
does not glow.
The balance is not switched on.
The mains supply connection has been interrupted
(mains cable not plugged in/faulty).
Power supply interrupted.
Rechargeable battery inserted incorrectly or empty
No rechargeable battery inserted
The displayed weight is
permanently changing
Draught/air movement
Table/floor vibrations
The weighing pan is in contact with foreign bodies
or is not correctly positioned.
Electromagnetic fields / static charging (choose
different location/switch off interfering device if
possible)
The weighing result is
obviously incorrect
The display of the balance is not at zero.
Adjustment is no longer correct.
Great fluctuations in temperature.
The balance is on an uneven surface.
Electromagnetic fields / static charging (choose
different location/switch off interfering device if
possible)
Should other error messages occur, switch balance off and then on again. If the
error message remains inform manufacturer.
MBC-M-BA-e-1312 31
14 Verification
Verification of the balance is invalid without the seal.
The seal marks attached on balances with type approval point out that the
balance may only be opened and serviced by trained and authorised
specialist staff. If the seal mark is destroyed, verification loses its validity.
Please observe all national laws and legal regulations. In Germany a reverification will be necessary.
Balances with obligation to verify must be taken out of operation if:
The weighing result of the balance is outside the error limit. Therefore, in
regular intervals load balance with known test weight (ca. 1/3 of the max. load) and
compare with displayed value.
The reverification deadline has been exceeded.
General introduction:
According to EU directive 2009/23/EC balances must be officially verified if they are
used as follows (legally controlled area):
a) For commercial transactions if the price of goods is determined by weighing.
b) For the production of medicines in pharmacies as well as for analyses in the
medical and pharmaceutical laboratory.
c) For official purposes
d) For manufacturing final packages
In cases of doubt, please contact your local trade in standard.
Verification notes:
An EU type approval exists for balances described in their technical data as
verifiable. If a balance is used where obligation to verify exists as described above, it
must be verified and re-verified at regular intervals.
Re-verification of a balance is carried out according to the respective national
regulations. For verification validity period, s. chap. 16.1.
The legal regulation of the country where the balance is used must be observed!
32 MBC-M-BA-e-1312
Position adjustment switch and seals:
Personal scales (including chair and wheelchair scales) in
hospitals
4 year
Personal scales, when not located in hospitals (for example,
doctor's offices and nursing homes)
unlimited
Baby weighing scales and mechanical birth weight scales
4 year
Bed scales
2 year
Scales in dialysis stations
unlimited
1 1 2
3
1. Self-destroying seal mark
2. Cover
3. Adjustment switch
14.1 Verification validity period (current status in G)
Rehab clinics and health authorities are treated as hospitals.
(4 years of verification validity)
Not treated as hospitals (verification validity not limited) are dialysis stations, nursing
homes and doctor’s surgeries.
(Details derived from: „Information by the verification authority, weighing scales
applied in medical use“)
MBC-M-BA-e-1312 33
15 Adjustment
Prepare the required adjustment weight. The adjustment weight to be
applied depends on the capacity of a weighing scale, see chap. 1.
Carry out adjustment as closely as possible to admissible maximum
load of weighing scale. Information about test weights you will find in the
internet under http://www.kern-sohn.com
Observe stable environmental conditions. For warm-up time required for
stabilisation see chpt 1.
Access to service menu „tCH“is locked in verified balances.
To disable the access lock, destroy the seal and actuate the adjustment
switch. Position of the adjustment switch see chap. 13.
Attention:
After destruction of the seal the weighing system must be re-verified by an
authorised agency and a new verification wire/seal mark fitted before it can
be reused for applications subject to verification.
As the acceleration value due to gravity is not the same at every location on earth,
each display unit with connected weighing plate must be coordinated - in compliance
with the underlying physical weighing principle - to the existing acceleration due to
gravity at its place of location (only if the weighing system has not already been
adjusted to the location in the factory). This adjustment process must be carried out
for the first commissioning, after each change of location as well as in case of
fluctuating environment temperature. To receive accurate measuring values it is also
recommended to adjust the display unit periodically in weighing operation.
34 MBC-M-BA-e-1312
Procedure:
Turn on the scale during the self-test press , the first
function [F1 oFF] is displayed.
Press repeatedly until "t CH" is displayed.
Press , [Pin] is displayed
Operate adjustment switch; for position see chap.13
Press , and subsequently, [P1 SPd] will appear
Press , „P2 CAL“ will be displayed
Press , the currently set balance type is displayed.
SnGrA = single range balance
dUArG = dual range balance
To change select scale type with and confirm with ,
[dESC] appears.
Press repeatedly until „CAL“ will be displayed.
Confirm with , [UnloAd] appears
MBC-M-BA-e-1312 35
Ensure that there are no objects on the weighing pan.
Wait for stability display "STABLE", then confirm with
(example)
The size of the currently set adjustment weight is displayed,
the active site flashes.
If required, select with he digit to be altered and change
the digit with .
Confirm with , [LoAd] appears
Put the required adjustment weight carefully in the centre of
the weighing pan.
Wait until stability display „STABLE“ appears
Confirm with [PASS] is displayed.
After the adjustment the balance will carry out a self-test. Remove
adjusting weight during selftest, balance will return into weighing
mode automatically.
An adjusting error or incorrect adjusting weight will be indicated
by the error message; repeat adjustment procedure.
An adjusting error or incorrect adjustment weight will generate an
error message („Err 4“), repeat the adjustment process.
36 MBC-M-BA-e-1312
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