KERN MWA Series User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [e-mail]
Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating manual
Multi-function weighing balance
KERN MWA
Type MWA_NM
Type MWA_PNM
Version 1.1
2017-12
GB
MWA-BAPS-e-1711

2 MWA-BAPS-e-1711
GB
KERN MWA
Version 1.1 2017-12
Operating manual
Multi-function weighing balance
Contents
1Technical data ............................................................................................ 4
2Declaration of conformity.......................................................................... 5
3Appliance overview.................................................................................... 5
4Keyboard overview .................................................................................... 8
5Overview of display.................................................................................... 9
6Basic instructions.................................................................................... 10
6.1 Proper use............................................................................................................10
6.2 Improper Use........................................................................................................10
6.3 Warranty...............................................................................................................11
6.4 Monitoring of Test Resources ...............................................................................11
7Basic Safety Precautions ........................................................................ 11
7.1 Pay attention to the instructions in the Operation Manual......................................11
9Transport and storage............................................................................. 12
9.1 Testing upon acceptance......................................................................................12
9.2 Packaging / return transport..................................................................................12
10 Unpacking, Setup and Commissioning.................................................. 13
10.1 Installation Site, Location of Use...........................................................................13
10.2 Unpacking.............................................................................................................13
10.3 Scope of delivery ..................................................................................................14
10.4 Balance assembly and installation ........................................................................14
10.4.1 Application examples: .......................................................................................................... 14
10.5 Mains connection..................................................................................................15
10.6 Battery operation is possible by obtaining an optional battery power pack............16
10.7 Battery operation...................................................................................................17
10.8 Inserting an accumulator/battery, exemplified by a battery set:.............................17
10.9 Initial Commissioning............................................................................................18
11 Operation .................................................................................................. 18
11.1 Weighing...............................................................................................................18
11.1.1 Weighing with wheelchair..................................................................................................... 19
11.2 Taring ...................................................................................................................19
11.3 HOLD function ......................................................................................................20
11.4 Display additional last decimal place.....................................................................21
11.5 Calculation of the Body Mass Index......................................................................21
11.5.1 Calculating Body Mass Index............................................................................................... 21
11.5.2 Classification of BMI values................................................................................................. 22
11.6 Automatic switch-off function „AUTO OFF“ ...........................................................23
11.7 Display background illumination............................................................................24
12 Menu.......................................................................................................... 25
12.1 Navigation in the menu .........................................................................................25

MWA-BAPS-e-1711 3
12.2 Menu overview......................................................................................................26
13 Data output RS 232 .................................................................................. 28
13.1 Pin allocation of balance output bushing:..............................................................28
13.2 Technical data ......................................................................................................28
13.3 Printer operation ...................................................................................................29
14 Error messages........................................................................................ 29
15 Servicing, maintenance, disposal........................................................... 30
15.1 Cleaning ...............................................................................................................30
15.2 Cleaning/Disinfection ............................................................................................30
15.3 Sterilisation...........................................................................................................30
15.4 Servicing, maintenance.........................................................................................30
15.5 Disposal................................................................................................................30
16 Instant help............................................................................................... 31
17 Adjustment ............................................................................................... 33

4 MWA-BAPS-e-1711
1 Technical data
KERN
MWA
300K1NM
MWA
300K1PNM
Trademark
MWA
300K1M
MWA
300K1PM
Display 6-digit
Weighing range (max) 300 kg
Reproducibility 0.1 kg
Linearity ± 0.1 kg
Display LCD with 25mm high digits
Recommended adjustment
weight, (Class) 300 kg (M1)
Stabilization time (typical) 2 sec.
Warm-up time 10 min
Operating temperature 10° C …. + 40° C
Humidity of air max. 80 % (not condensing)
Electric Supply Input voltage 100V-240V AC, 50 / 60 Hz
Auto Off After 3, 5, 15, 30 min without load change (adjustable)
Dimensions
fully assembled
(D x W X H) mm 1190 x 1140 x 80 1190 x 1140 x 1150
Weighing plate (W x D) mm 840 x 880
Weight kg (net) 72 76
Rechargeable battery
operation Optional
Batteries 6 x 1.5 V AA
Data interface
provided as standard RS 232 C

MWA-BAPS-e-1711 5
2 Declaration of conformity
To view the current EC/EU Declaration of Conformity go to:
www.kern-sohn.com/ce
3 Appliance overview
The wheelchair platform scale MWA-M with folded
and unfolded ramps and the display (serial fitting).
The wheelchair platform scale
MWA-PM with folded and
unfolded ramps, the display and
the rail with a stand (serial
fitting).
The possibility of retrofitting with
2nd rail MWA-A02 (without a
stand).
Folded wheelchair platform
scale MWA-PM.

6 MWA-BAPS-e-1711
Weighing balance suitable as
wheelchair or stand assist
balance.
1. Display Unit
2. Handrail optional
MWA-A01with tripod
(cannot be retrofitted)
MWA-A02 without tripod
3. Ramps
4. Bubble level
5. Carrying handle
Wheelchair balance
(Collapsible ramps) Suitable as wheelchair and
stand assist balance Handrail collapsible

MWA-BAPS-e-1711 7
Assembly of the rail:
Carefully mount the rail and fasten it
with screws.
The activity should preferably be
performed by two people.
Display unit back
6. Adjustment switch
7. Terminal power supply unit
8. Connecting cable
”display unit - platform"
9. Connector RS232

8 MWA-BAPS-e-1711
4 Keyboard overview
Button Designation Function
ON/OFF button Turn on/off
Hold-key
Print-key Hold function /determination of stable weighing value
Print (press and hold for a while): Data transmission via
interface RS 232
BMI key Determination of body mass index
In the menu:
•Confirm selection
For numeric entry:
•Confirm numerical value
Function key In menu:
•Call up menu
•Select menu items
For numeric entry:
•Increase numerical value
Zeroing key Weighing scale will be reset to „0.0“
For numeric entry:
•Change decimal place
TARE key Tare balance

MWA-BAPS-e-1711 9
5 Overview of display
Display Designation Description
Stability display Scales are in a steady state
Zeroing display Should the balance not display exactly
zero despite empty weighing plate, press
the button. Your balance will be set
to zero after a short standby time.
NET Net weight display Illuminated when net weight is displayed
Illuminated after weighing scale was
tared
GROSS Gross weight display Illuminated when gross weight is
displayed
HOLD HOLD function HOLD function active
BMI BMI function Illuminated while BMI function is enabled
Rechargeable /Battery
display
Shows the capacity of the rechargeable /
batteries

10 MWA-BAPS-e-1711
6 Basic instructions
6.1 Proper use
The balance is intended for determining the weight of persons in standing and sitting
positions.
In the case of multifunctional balances, the weighted person should be carefully
positioned in the centre of the weighing plate and stand still. If a wheelchair is used, it
should be positioned in the centre of the weighing plate.
The weight can be read after the balance is stabilised.
The balance is designed for continuous operation.
The weighing platform may only be stepped on by persons
capable of standing on both feet on the weighing platform.
6.2 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.
Do not use the balance to determine body weight in medicine.