KERN MBC-M User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [e-mail]
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

2 MBC-M-BA-e-1312
GB
KERN MBC-M
Version 1.2 01/2013
Operating instructions
Baby scale
Contents
1Technical data................................................................................................ 4
2Declaration of conformity ............................................................................. 5
2.1 Explanation of the graphic symbols....................................................................................... 5
3Appliance overview ....................................................................................... 7
3.1 Overview of display.................................................................................................................. 8
3.2 Keyboard overview................................................................................................................... 9
4Basic 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
5Basic 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
6Electromagnetic 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
7Transport and storage................................................................................. 18
7.1 Testing upon acceptance ...................................................................................................... 18
7.2 Packaging / return transport ................................................................................................. 18

MBC-M-BA-e-1312 3
8Unpacking, 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
9Operation...................................................................................................... 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

4 MBC-M-BA-e-1312
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

MBC-M-BA-e-1312 5
2 Declaration of conformity
Declaration of conformity: see separate document showing serial number of device
CE marking:
0297
93/42/EEC
2009 / 23 / EG
Non-automatic Weighing Instruments Directive
2.1 Explanation of the graphic symbols
This EC verification mark indicates that these scales are in
conformity with EC Directive 2009 / 23 / EC for Non-
Automatic 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

6 MBC-M-BA-e-1312
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.

MBC-M-BA-e-1312 7
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

8 MBC-M-BA-e-1312
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.

MBC-M-BA-e-1312 9
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

10 MBC-M-BA-e-1312
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.”
4.1 Specific function
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
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.
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!

MBC-M-BA-e-1312 11
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.

12 MBC-M-BA-e-1312
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).

MBC-M-BA-e-1312 13
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.
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.
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.

14 MBC-M-BA-e-1312
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.

MBC-M-BA-e-1312 15
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 MBC-
M 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.

16 MBC-M-BA-e-1312
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.
aThe 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.
bFor a frequency range of 150 kHz to 80 MHz field intensity should be less than 3 V/m.

MBC-M-BA-e-1312 17
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.
6.4 Minimum distances
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.

18 MBC-M-BA-e-1312
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.

MBC-M-BA-e-1312 19
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.

20 MBC-M-BA-e-1312
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.