KERN MPD Series 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
Step-On Personal scale
KERN MPD
Type MPD 250K100M
Type MPD 250K100NM
Type MPD 200K-1EM
Version 1.0
2017-02
GB
MPD-BAPS-e-1710

2 MPD-BAPS-e-1710
GB
KERN MPD
Version 1.0 2017-02
Operating instructions
Step-On Personal scale
Contents
1Technical data ............................................................................................ 3
2Declaration of conformity.......................................................................... 5
3Appliance overview.................................................................................... 6
3.1 Overview of display................................................................................................ 6
4Basic Information (General)...................................................................... 7
4.1 Proper use............................................................................................................. 7
4.2 Improper Use......................................................................................................... 8
4.3 Warranty................................................................................................................ 8
4.4 Monitoring of Test Resources ................................................................................ 8
5Basic Safety Precautions .......................................................................... 9
5.1 Pay attention to the instructions in the Operation Manual....................................... 9
6Transport and storage............................................................................... 9
6.1 Testing upon acceptance....................................................................................... 9
6.2 Packaging / return transport................................................................................... 9
7Unpacking, Setup and Commissioning.................................................. 10
7.1 Installation Site, Location of Use...........................................................................10
7.2 Unpacking.............................................................................................................10
7.3 Scope of delivery ..................................................................................................10
7.4 Placing..................................................................................................................11
7.5 Mains connection..................................................................................................11
7.6 Rechargeable battery operation (optional) ............................................................11
7.7 Battery operation...................................................................................................12
7.8 Initial Commissioning............................................................................................13
8Operation .................................................................................................. 14
8.1 Display highlight....................................................................................................14
9Error messages........................................................................................ 15
10 Service, maintenance, disposal.............................................................. 16
10.1 Cleaning / Disinfecting ..........................................................................................16
10.2 Sterilisation...........................................................................................................16
10.3 Service, maintenance ...........................................................................................16
10.4 Disposal................................................................................................................16
11 Instant help............................................................................................... 17
12 Adjustment ............................................................................................... 18

MPD-BAPS-e-1710 3
1 Technical data
KERN (Type) MPD 250K100NM MPD 200K-1EM
Trademark MPD 250K100M MPD 200K-1EM
Display 6-digit
Weighing range (max) 250 kg
Reproducibility 0.1 kg 0,2 kg
Linearity ± 0.1 kg 0,2 kg
Display LCD with 25mm high digits
Recommended adjustment
weight, (Class) 200 kg (M1)
Stabilization time (typical) 3 sec.
Warm-up time 10 min
Operating temperature 0° C …. + 40° C
Humidity of air max. 80 % (not condensing)
Electric Supply Input voltage 110V-240V
AC, 50/60 Hz -
Balance
(W x D x H) mm 365 x 490 x 120
Weighing plate mm 365 x 360 x 80
Weight kg (net) 8,9 8,7
Rechargeable battery
operation optional;
6 x 1.2 V 2000 mA -
Batteries 6 x 1.5 V AA

4 MPD-BAPS-e-1710
KERN (Type) MPD 250K100M MPD 200K-1EM
Display 6-digit
Weighing range (max) 250 kg
Reproducibility 0.1 kg 0,2 kg
Linearity ± 0.1 kg 0,2 kg
Display LCD with 25mm high digits
Recommended adjustment
weight, (Class) 200 kg (M1)
Stabilization time (typical) 3 sec.
Warm-up time 10 min
Operating temperature 0° C …. + 40° C
Humidity of air max. 80 % (not condensing)
Electric Supply Input voltage 110V-240V
AC, 50/60 Hz -
Balance
(W x D x H) mm 365 x 490 x 120
Weighing plate mm 365 x 360 x 80
Weight kg (net) 8,9 8,7
Rechargeable battery
operation optional:
6 x 1.2 V 2000 mA -
Batteries 6 x 1.5 V AA

MPD-BAPS-e-1710 5
2 Declaration of conformity
To view the current EC/EU Declaration of Conformity go to:
www.kern-sohn.com/ce

6 MPD-BAPS-e-1710
3 Appliance overview
1Display unit
2Weighing platform
(anti-slip surface)
3Foot switch
Underside
4Mains port
5Rechargeable battery
compartment
6Rubber feet
(adjustable height)
3.1 Overview of display
Display Description Description
STABLE Stability display Scales are in a steady state
ZERO Zeroing display Weighing scale shows „0.0“.
GROSS Gross weight display Illuminated when gross weight is displayed

MPD-BAPS-e-1710 7
4 Basic Information (General)
4.1 Proper use
These scales are used to determine weight of people sitting at rest,
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.
Determination of the body weight.
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.
The weighing platform may only be stepped on by persons
capable of standing on both feet on the weighing platform.
The weighing platforms are fitted with an anti-slip surface that must not be covered
during weighing a person.
The balance should be checked for correct condition prior to each utilisation by a
person familiar with proper operation of the balance.

8 MPD-BAPS-e-1710
4.2 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.
The balance cannot be used to determine a body weight in practice of medicine.
4.3 Warranty
Warranty claims shall be voided in case
•Our conditions in the operation manual are ignored
•The appliance is used outside the described uses
•The appliance is modified or opened
•mechanical damage and damage caused by media, liquids,
•natural wear and tear
•The appliance is improperly set up or incorrectly electrically connected
•The measuring system is overloaded
•Dropping the balance
4.4 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.

MPD-BAPS-e-1710 9
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.
6 Transport and storage
6.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
6.2 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 platform, power unit etc.
against shifting and damage.

10 MPD-BAPS-e-1710
7 Unpacking, Setup and Commissioning
7.1 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. Change location or remove
source of interference.
7.2 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.
7.3 Scope of delivery
Serial accessories:
•Balance
•Power pack unit
•Operating instructions

MPD-BAPS-e-1710 11
7.4 Placing
Level balance with foot screws until the air bubble of the
water balance is in the prescribed circle.
Check levelling regularly.
7.5 Mains connection
only model MPD 250K100NM
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.
Always use genuine approved KERN power pack units.
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 informs you during loading about the loading status of the
rechargeable battery.
green: Rechargeable battery completely reloaded
blue: Charging storage battery
7.6 Rechargeable battery operation (optional)
only model MPD 250K100NM
Open battery compartment cover (1) at the base of the display unit and insert battery.
Charge the battery for at least 12 hours before initial use.
The appearance of the symbol in the weight display indicates that the battery
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.
1

12 MPD-BAPS-e-1710
Voltage has dropped below prescribed minimum.
Rechargeable battery very low.
Rechargeable battery completely reloaded
If the balance is not used for a longer time, take out the rechargeable battery and
store it separately. Leaking liquid could damage the balance.
7.7 Battery operation
As an alternative to rechargeable battery operation, the balance may also be
operated with 6x AA batteries.
Open battery compartment cover (1) at the lower side of the display unit and insert
batteries according to the example below. Lock the battery cover again. If the
batteries are empty, in the balance display appears the symbol . Change
batteries. To save battery power, the balance switches off automatically.
Capacity of batteries exhausted.
Batteries will soon be flat.
Batteries are completely charged

MPD-BAPS-e-1710 13
Insert batteries
Remove battery compartment cover
Connect battery holder to housing
contact acc. to illustration
Insert battery holder
Insert batteries into battery compartment
and lock with battery compartment
cover.
7.8 Initial Commissioning
In order to obtain exact results with the electronic balances, your balance must have
reached the operating temperature (see warming up time chap. 1). During this
warming up time the balance must be connected to the power supply (mains,
accumulator or battery) and be switched on.
The accuracy of the balance depends on the local acceleration of gravity.
The value of gravity acceleration is shown on the type plate.

14 MPD-BAPS-e-1710
8 Operation

Turn on weighing scale by foot switch (chap. 3).
The balance will carry out a self-test
The scales are ready for operation as soon as the weight
display for “0.0 kg“ has appeared.
Have person stand in the centre of the scales. Wait until the
standstill display „STABLE“ appears, then read the weighing
result.
8.1 Display highlight

Turn on the scales with the use of a foot switch.
The scales shall undergo automatic testing.
The scales is prepared for weighing right after the "0.0kg"
mass indication is displayed.


Press and hold the foot switch.
Background highlight setting options shall be displayed in
sequence.
Select the demanded setting by means of pushing the switch
for a while.
The indication shall blink for a while and then the selected
setting will be applied.
bL on
Highlight is always turned on
bL AU
Automatic highlight turning off
bL oFF Highlight always turned off

MPD-BAPS-e-1710 15
9 Error messages
Display
Description
OL or------ Weighing range has been exceeded (excess load)
------or Null Below weighing range (underload)
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 converter range
•Damaged weighing cell
•Damaged electronics
Lack of possibility of zero point initiation
•Damaged / overloaded measuring cell
•The objects are located on the platform / have contact with
it
•Unremoved transportation protection
•Main Board damaged
Should other error messages occur, switch balance off and then on again. If the error
message remains inform manufacturer.

16 MPD-BAPS-e-1710
10 Service, maintenance, disposal
10.1 Cleaning / Disinfecting
Clean weighing platform (such as seat) as well as casing with household detergents
or commercially available disinfectants, e.g. 70% isopropanol. We recommend a
disinfectant suitable for wiping disinfection. 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.
To prevent cross-contamination (fungal skin infection) please observe the following
time intervals for disinfection:
•Weighing plate before and after any measurement with direct skin contact
•When required:
oDisplay
oTouch-sensitive keyboard
Do not spray disinfectants onto appliance.
Make sure that disinfectant does not penetrate the interior of
the balance.
Remove dirt immediately.
10.2 Sterilisation
Sterilisation of the appliance is not allowed.
10.3 Service, maintenance
The appliance may only be opened by trained service technicians who are authorized
by KERN.
Disconnect the scales before opening.
10.4 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.

MPD-BAPS-e-1710 17
11 Instant help
In case of an error in the program process, briefly turn off the balance and disconnect
from power supply. The weighing process must then be restarted from the beginning.
Fault Possible cause
The displayed weight doe
s
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 plate 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.
•Warm-up time was ignored.
•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.

18 MPD-BAPS-e-1710
Position adjustment switch and seals:
1. Self-destroying seal mark
2. Cover
3. Adjustment switch
12 Adjustment
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.
•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 chap. 1.

MPD-BAPS-e-1710 19
Procedure:
Switch off the balance.
Press adjustment switch and turn on weighing scale by operating foot switch
(chap. 3)..
Wait until the size of the adjustment weight (see chap. 1) required is displayed.
Place adjustment weight in the centre of the weighing platform. Wait until „Ld 0“
is shown.
Take away adjustment weight. Ensure that there are no other objects on the
weighing pan.
Wait for a few seconds until „PASS“ is displayed.
After successful adjustment the balance automatically returns to weighing
mode.