KERN MCC-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
Medical Chair scale
KERN MCC-M
Version 1.1
10/2012
GB
MCC-M-BA-e-1211

2 MCC-M-BA-e-1211
GB
KERN MCC-M
Version 1.1 10/2012
Operating manual chair
Contents
1Technical data................................................................................................ 4
2Declaration of conformity ............................................................................. 5
2.1 Explanation of the graphic symbols............................................................................................ 5
3Appliance overview ....................................................................................... 7
3.1 Overview of display .................................................................................................................... 9
3.2 Keyboard overview................................................................................................................... 10
4Basic Information (General)........................................................................ 11
4.1 Specific function ....................................................................................................................... 11
4.2 Proper use................................................................................................................................ 11
4.3 Improper Use............................................................................................................................ 12
4.4 Warranty................................................................................................................................... 12
4.5 Monitoring of Test Resources .................................................................................................. 12
5Basic Safety Precautions............................................................................ 13
5.1 Pay attention to the instructions in the Operation Manual........................................................ 13
5.2 Personnel training..................................................................................................................... 13
5.3 Preventing contamination......................................................................................................... 13
6Electromagnetic compatibility (EMC)......................................................... 14
6.1 General hints ............................................................................................................................ 14
6.2 Electromagnetic interferences.................................................................................................. 15
6.3 Electromagnetic noise immunity............................................................................................... 16
6.3.1 Crucial features of performance............................................................................................... 18
6.4 Minimum distances................................................................................................................... 18
7Transport and storage................................................................................. 19
7.1 Testing upon acceptance ......................................................................................................... 19
7.2 Packaging / return transport..................................................................................................... 19

MCC-M-BA-e-1211 3
8Unpacking, Setup and Commissioning ..................................................... 20
8.1 Place of installation / place of operation................................................................................... 20
8.2 Unpacking................................................................................................................................. 20
8.3 Scope of delivery...................................................................................................................... 20
8.4 Installing the chair scales ......................................................................................................... 21
8.4.1 Levelling ................................................................................................................................... 23
8.5 Mains connection...................................................................................................................... 24
8.6 Rechargeable battery operation............................................................................................... 25
8.7 Initial Commissioning................................................................................................................ 25
9Operation...................................................................................................... 26
9.1 Weighing................................................................................................................................... 26
9.2 Taring........................................................................................................................................ 26
9.3 HOLD function.......................................................................................................................... 27
9.4 See second decimal point (not verified value) ......................................................................... 27
9.6 Calculation of the Body Mass Index......................................................................................... 28
9.6.1 Classification of BMI values ..................................................................................................... 28
9.7 Automatic switch-off function „AUTO OFF“ .............................................................................. 29
9.8 Display background illumination............................................................................................... 30
10 Menu ............................................................................................................. 31
10.1 Navigation in the menu............................................................................................................. 31
10.2 Menu overview MPC models.................................................................................................... 32
11 Error messages............................................................................................ 33
12 Service, maintenance, disposal.................................................................. 34
12.1 Cleaning ................................................................................................................................... 34
12.2 Cleaning / disinfecting .............................................................................................................. 34
12.3 Service, maintenance............................................................................................................... 34
12.4 Disposal.................................................................................................................................... 34
13 Instant help................................................................................................... 35
14 Verification ................................................................................................... 36
14.1 Verification validity period (current status in G)........................................................................ 37
15 Adjustment................................................................................................... 38

4 MCC-M-BA-e-1211
1 Technical data
KERN
MCC 250K100M
Readability (d)
0.1 kg
Weighing range (max)
250 kg
Minimum weight (min)
2 kg
Verification value (e)
100 g
Verification class
III
Reproducibility
0.1 kg
Linearity
±0.1 kg
Recommended adjustment
weight (Class)
200 kg
(M1)
Weighing Units
kg
Warm-up time
10 min
Electric Supply
Input voltage: 220 V - 240 V AC 50 Hz
Operating temperature
0°C … + 40°C
Humidity of air
max. 80 % (not condensing)
Dimensions (W x D x H) mm
625 x 990 x 935
Dimensions
Weighing surface
435 x 380 x 410
Weight kg (net)
19
Rechargeable battery operation
Series
Medical product in accordance
with 93/42/EEC
Category I with measuring function

MCC-M-BA-e-1211 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 1334331
Designation of the serial number of every device, applied at the
device and on the packaging
Number here as 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 MCC-M-BA-e-1211
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.

MCC-M-BA-e-1211 7
3 Appliance overview
1. Seat pan
2. Bubble level
3. Display Unit
4. Manipulations
5. Parking brake
6. Adjustment switch
7. Terminal power supply unit
8. Connection cable "Display - Chair"
9. Battery compartment

8 MCC-M-BA-e-1211
Details:
Parking brake
Foot rests
Accessory bag
Folding arm rests

MCC-M-BA-e-1211 9
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
BMI
Body Mass Index
Is actively displayed during active BMI
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.

10 MCC-M-BA-e-1211
3.2 Keyboard overview
Key
Description
Function
ON/OFF-switch
Turn on/off
HOLD button
Hold function
BMI key
Calculation of the Body Mass Index
In menu:
Confirm selection
For numeric entry:
Confirm numerical value
Function key
In menu:
Call up menu
How to select menu items
For numeric entry:
Increase numerical value
Zero setting key
Weighing scale will be reset to „0.0“
For numeric entry:
Change decimal place
TARE key
Tare balance

MCC-M-BA-e-1211 11
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.
Use as „non-standalone weighing scale“, that is, a person
sits carefully onto the seating surface’s centre. Once a
steady display value is shown, you can read the weight
value.
Contraindication
No contraindication known
4.2 Proper use
These scales are used to determine weight of people sitting at rest in medical
treatment rooms. The scales are suitable for recognising, preventing and controlling
illnesses.
The person should be weighed carefully and have contact with the center of the seat,
sit and stay calm.
As soon as a stable weighing value is reached the weighing value can be read.
The scales are designed for long-term usage.
The instruments shall only be used by people who can sit still.
The balances should be checked for correct condition prior to each utilisation by a
person familiar with proper operation of the balance.
The chair scales may not be used for the transport of people!
As long as the patient is sitting on the chair scales, the wheel
brakes must be locked without fail.
Do not step onto the foot rests when stepping or leaving the
chair scales!

12 MCC-M-BA-e-1211
4.3 Improper Use
Do not use these scales for dynamic weighing processes.
No permanent load on the seat area. This may damage the measuring system.
Impacts and overloading exceeding the stated maximum load (max) of the seating
surface, 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.
Do not modify the construction of the scales. This may lead to incorrect weighing
results, safety-related faults and destruction of the balances.
The balances 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
Modification or opening of appliances
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 of scales
4.5 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.

MCC-M-BA-e-1211 13
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
The prevention of cross-contamination (fungal skin infections,……) requires regular
cleaning of the seating surface.
Recommendation: after a weighing procedure that could potentially result in
contamination (e. g. after weighing that involves direct skin contact).

14 MCC-M-BA-e-1211
6 Electromagnetic compatibility (EMC)
6.1 General hints
The installation and use of this electrical medical device 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 chair scale MCC-M at a different location.
Connect the chair scale MCC-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.

MCC-M-BA-e-1211 15
6.2 Electromagnetic interferences
Guidelines and manufacturer’s declaration – electromagnetic interferences
The chair scale MCC-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 chair scale MCC-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 chair scale MCC-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 chair scale MCC-M directly next to other devices and do not stack it
with other devices. If this type of operation is necessary, observe the chair scale
MCC-M to ensure normal operation in such an arrangement.

16 MCC-M-BA-e-1211
6.3 Electromagnetic noise immunity
Guidelines and manufacturer’s declaration - electromagnetic noise immunity
The chair scale MCC-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 chair scale MCC-M
demands continuous operation
even during disruptions to the
power supply, we recommend
powering the chair scale MCC-
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.

MCC-M-BA-e-1211 17
Guidelines and manufacturer’s declaration - electromagnetic noise immunity
The chair scale MCC-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 chair scale MCC-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 chair scale MCC-M is to be used exceeds the
conformity level above, you should observe the chair scale MCC-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 chair scale MCC-M.
bFor a frequency range of 150 kHz to 80 MHz field intensity should be less than 3 V/m.

18 MCC-M-BA-e-1211
6.3.1 Crucial features of performance
Note:
The chair scale MCC-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 chair scale MCC-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 chair scale MCC-M –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.

MCC-M-BA-e-1211 19
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 against shifting and damage.

20 MCC-M-BA-e-1211
8 Unpacking, Setup and Commissioning
8.1 Place of installation / place of operation
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
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.
8.3 Scope of delivery
Balance
Operating instructions
Mains adapter
Accessory Bag