KERN MWA 300-K1M 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 300-K1M
Type MWA 300-K1PM
Type MWA 300-K1NM
Type MWA 300-K1PNM
Version 3.0
2017-02
GB
MWA_M-BA-e-1730

2 MWA_M-BA-e-1730
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MWA_M-BA-e-1730 3
GB
KERN MWA
Version 3.0 2017-02
Operating manual
Multi-function weighing balance
Contents
1Technical data ............................................................................................ 5
2Declaration of conformity.......................................................................... 7
2.1 Explanation of the graphic symbols........................................................................ 7
3Appliance overview.................................................................................. 10
4 ............................................................................................................................... 13
5Keyboard overview .................................................................................. 14
6Overview of display.................................................................................. 15
7Basic instructions.................................................................................... 16
7.1 Specific function....................................................................................................16
7.2 Proper use............................................................................................................16
7.3 Improper Use........................................................................................................17
7.4 Warranty...............................................................................................................17
7.5 Monitoring of Test Resources ...............................................................................17
8Basic Safety Precautions ........................................................................ 18
8.1 Pay attention to the instructions in the Operation Manual......................................18
8.2 Personnel training.................................................................................................18
8.3 Preventing contamination......................................................................................18
9Electromagnetic compatibility (EMC)..................................................... 19
9.1 General hints ........................................................................................................19
9.2 Electromagnetic interferences...............................................................................20
9.3 Electromagnetic noise immunity............................................................................21
9.3.1 Crucial features of performance........................................................................................... 23
9.4 Minimum distances...............................................................................................23
10 Transport and storage............................................................................. 24
10.1 Testing upon acceptance......................................................................................24
10.2 Packaging / return transport..................................................................................24
11 Unpacking, Setup and Commissioning.................................................. 25
11.1 Installation Site, Location of Use...........................................................................25
11.2 Unpacking.............................................................................................................25
11.3 Scope of delivery ..................................................................................................26
11.4 Balance assembly and installation ........................................................................26
11.4.1 Application examples:.......................................................................................................... 26
11.5 Mains connection..................................................................................................27
11.6 Battery operation is possible by obtaining an optional battery power pack............28
11.7 Battery operation...................................................................................................29
11.8 Initial Commissioning............................................................................................31

4 MWA_M-BA-e-1730
12 Operation .................................................................................................. 31
12.1 Weighing...............................................................................................................31
12.1.1 Weighing with wheelchair..................................................................................................... 32
12.2 Taring ...................................................................................................................32
12.3 HOLD function ......................................................................................................33
12.4 Display additional last decimal place.....................................................................34
12.5 Calculation of the Body Mass Index......................................................................34
12.5.1 Calculating Body Mass Index............................................................................................... 34
12.5.2 Classification of BMI values................................................................................................. 35
12.6 Automatic switch-off function „AUTO OFF“ ...........................................................36
12.7 Display background illumination............................................................................37
13 Menu.......................................................................................................... 38
13.1 Navigation in the menu .........................................................................................38
13.2 Menu overview......................................................................................................39
14 Data output RS 232 .................................................................................. 41
14.1 Pin allocation of balance output bushing:..............................................................41
14.2 Technical data ......................................................................................................41
14.3 Printer operation ...................................................................................................42
15 Error messages........................................................................................ 42
16 Servicing, maintenance, disposal........................................................... 43
16.1 Cleaning ...............................................................................................................43
16.2 Cleaning / disinfecting...........................................................................................43
16.3 Sterilisation...........................................................................................................43
16.4 Servicing, maintenance.........................................................................................43
16.5 Disposal................................................................................................................43
17 Instant help............................................................................................... 44
18 Verification................................................................................................ 45
18.1 Verification validity period (current status in G).....................................................47
19 Adjustment ............................................................................................... 48
20 Accessories (optional)............................................................................. 50

MWA_M-BA-e-1730 5
1 Technical data
KERN (Type)
MWA
300K1NM
MWA
300K1PNM
Trademark
MWA
300K1M
MWA
300K1PM
Display 6-digit
Weighing range (max) 300 kg
Minimum load (Min) 2 kg
Verification value (e) 100 g
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 880 x 840
Weight kg (net) 72 76
Rechargeable battery
operation Optional; 6 x 1.2 V 2000 mA
Batteries 6 x 1.5 V AA
Data interface
provided as standard RS 232 C

6 MWA_M-BA-e-1730
KERN (Type)
MWA
300K1M
MWA
300K1PM
Display 6-digit
Weighing range (max) 300 kg
Minimum load (Min) 2 kg
Verification value (e) 100 g
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 880 x 840
Weight kg (net) 72 76
Rechargeable battery
operation Optional; 6 x 1.2 V 2000 mA
Batteries 6 x 1.5 V AA
Data interface
provided as standard RS 232 C

MWA_M-BA-e-1730 7
2 Declaration of conformity
To view the current EC/EU Declaration of Conformity go to:
www.kern-sohn.com/ce
The scope of delivery for verified weighing balances (= conformity-
rated weighing balances) includes a Declaration of Conformity.
Solely these weighing balances are classified as medical devices.
2.1 Explanation of the graphic symbols
This marking indicates that these weighing balances are in
conformity with EU Directive 2014/31/EU for non-automatic
weighing balances. Weighing balances bearing this
marking are licensed for medical purposes in the European
Union.
The number inside the frame“M16“ (example shown year
16) documents the year of conformity assessment.
This marking shows that this weighing balance is in
conformity with EU Directive 93/42/EEC and inside the
European Community is classified as medical device.
WF 170012
Designation of the serial number of every device, applied at the
device and on the packaging
Number here as example
2017-02
Identification of the manufacturing date of the medical product.
Year and month here as example

8 MWA_M-BA-e-1730
“Please note the accompanying documents“
or “Please note operating instructions”
“Observe operating instructions”
“Observe operating instructions”
Kern & Sohn GmbH
D–72336 Balingen,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 lower limit (-20°C) and the upper
(+60°C) limit (storage temperature on packaging)
12 V DC / 500 mA
Display of supply voltage for scales with polarity display.
+70°C
-30°C
+60℃
-20
℃

MWA_M-BA-e-1730 9
Safety instruction: Do not place hands beneath the ramp.
Mains connection
Sealing mark KERN SEAL
Supply voltage direct current
Information
Level balance before use

10 MWA_M-BA-e-1730
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.