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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
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@kern-sohn.com
Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
MWA_M-BA-e-1730
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Related Manuals for KERN MWA 300-K1M
Summary of Contents for KERN MWA 300-K1M
- Page 1 KERN & Sohn GmbH Ziegelei 1 Phone: +49-[0]7433- 9933-0 D-72336 Balingen Fax: +49-[0]7433-9933-149 E-Mail: info@kern-sohn.com 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 MWA_M-BA-e-1730...
- Page 2 Weitere Sprachversionen finden Sie online unter www.kern-sohn.com/manuals Други езикови версии ще намерите в сайта www.kern-sohn.com/manuals Flere sprogudgaver findes på websiden www.kern-sohn.com/manuals Muud keeleversioonid leiate Te leheküljel www.kern-sohn.com/manuals Más versiones de idiomas se encuentran online bajo www.kern-sohn.com/manuals Άλλες γλωσσικές αποδόσεις θα βρείτε στην ιστοσελίδα...
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Page 3: Table Of Contents
KERN MWA Version 3.0 2017-02 Operating manual Multi-function weighing balance Contents Technical data .................... 5 Declaration of conformity ................7 Explanation of the graphic symbols ................ 7 Appliance overview .................. 10 4 ..........................13 Keyboard overview .................. 14 Overview of display .................. 15 Basic instructions .................. - Page 4 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 ....................
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Page 5: Technical Data
1 Technical data KERN (Type) 300K1NM 300K1PNM Trademark 300K1M 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... - Page 6 KERN (Type) 300K1M 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 300 kg weight, (Class)
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Page 7: Declaration Of Conformity
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. - Page 8 “Please note the accompanying documents“ or “Please note operating instructions” “Observe operating instructions” “Observe operating instructions” Identification of manufacturer of medical product including address Kern & Sohn GmbH D–72336 Balingen,Germany www.kern-sohn.com “Electro-medical appliance“ with attachment for type B Device protection category II...
- Page 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 MWA_M-BA-e-1730...
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Page 10: Appliance Overview
3 Appliance overview The wheelchair platform scale MWA-M with folded The wheelchair platform scale and unfolded ramps and the display (serial fitting). MWA-PM with folded and unfolded ramps, the display and the rail with a stand (serial fitting). The possibility of retrofitting with rail MWA-A02 (without a stand). - Page 11 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 Suitable as wheelchair and Handrail collapsible stand assist balance (Collapsible ramps) MWA A04 rail with seat , foldable •...
- Page 12 Assembly of the rail and the seat: Carefully mount the rail and fasten it with screws. The activity should preferably be performed by two people. If the seat is used, make sure that it latches into position after you unfold it (see the figure below).
- Page 13 Display unit back 6. Adjustment switch 7. Terminal power supply unit 8. Connecting cable ”display unit - platform" 9. Connector RS232 MWA_M-BA-e-1730...
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Page 14: Keyboard Overview
5 Keyboard overview Type MWA 300K-1M Type MWA 300K-1NM Type MWA 300K-1PM Type MWA 300K-1PNM Button Designation Function ON/OFF button Turn on/off Hold function /determination of stable weighing value Hold-key Print (press and hold for a while): Data transmission via Print-key interface RS 232 Determination of body mass index... -
Page 15: Overview Of Display
6 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 button. Your balance will be set to zero after a short standby time. Net weight display Illuminated when net weight is displayed Illuminated after weighing scale was... -
Page 16: Basic Instructions
7 Basic instructions 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.”... -
Page 17: Improper Use
In KERN’s accredited DKD calibration laboratory test weights and balances may be calibrated (return to the national standard) fast and at moderate cost. MWA_M-BA-e-1730... -
Page 18: Basic Safety Precautions
8.1 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. 8.2 Personnel training The medical staff must apply and follow the operating instructions for proper use and care of the product. -
Page 19: Electromagnetic Compatibility (Emc)
Inadmissible disturbances from the environment may result in incorrect displays, inaccurate measured values or incorrect behaviour of the multi-function balances MWA 300-K1M, MWA 300-K1PM, MWA 300-K1NM, MWA 300-K1PNM . The multi- function balances MWA 300-K1M, MWA 300-K1PM, MWA 300-K1NM, MWA 300- K1PNM, too, may in certain cases cause such malfunctions in other devices. -
Page 20: Electromagnetic Interferences
The multi-function balances MWA 300-K1M, MWA 300-K1PM, MWA 300-K1NM, MWA 300- K1PNM are intended for operation in the kind of electromagnetic environment stated below. The customer or user of the multi-function balances MWA 300-K1M, MWA 300-K1PM, MWA 300-K1NM, MWA 300-K1PNM should ensure that they are operated in this kind of environment. -
Page 21: Electromagnetic Noise Immunity
The customer or user of the multi-function balances MWA 300-K1M, MWA 300-K1PM, MWA 300-K1NM, MWA 300- K1PNM should ensure that they are operated in this kind of environment. - Page 22 300-K1PM, MWA 300-K1NM, MWA 300-K1PNM 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 multifunctional balances MWA 300-K1M, MWA 300-K1PM, MWA 300-K1NM, MWA 300-K1PNM.
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Page 23: Crucial Features Of Performance
The multi-function balances MWA 300-K1M, MWA 300-K1PM, MWA 300-K1NM, MWA 300- K1PNM are designed for use in an electromagnetic environment in which HF disturbance variables are controlled. The customer or user of the multi-function balances MWA 300-K1M, MWA 300-K1PM, MWA 300-K1NM, MWA 300-K1PNM can help avoiding electromagnetic... -
Page 24: Transport And Storage
10 Transport and storage 10.1 Testing upon acceptance When receiving the appliance, please check packaging immediately, and the appliance itself when unpacking for possible visible damage. 10.2 Packaging / return transport Keep all parts of the original packaging for a possibly required return. -
Page 25: Unpacking, Setup And Commissioning
11 Unpacking, Setup and Commissioning 11.1 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: •... -
Page 26: Scope Of Delivery
11.3 Scope of delivery Serial accessories: • Balance • Mains adapter (in conformity with EN 60601-1) • Operating manual • Wall bracket • Small components 11.4 Balance assembly and installation Level balance with foot screws until the air bubble of the water balance is in the prescribed circle. -
Page 27: Mains Connection
The stated voltage value must be the same as the local voltage. Always use genuine approved KERN power pack units as per EN 60601-1 directive. 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. -
Page 28: Battery Operation Is Possible By Obtaining An Optional Battery Power Pack
11.6 Battery operation is possible by obtaining an optional battery power pack Open the battery compartment cover (1) at the base of the display unit and insert the rechargeable 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. -
Page 29: Battery Operation
11.7 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 . - Page 30 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. MWA_M-BA-e-1730...
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Page 31: Initial Commissioning
11.8 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. During this warming up time the balance must be connected to the power supply (mains, accumulator or battery) and be switched on. -
Page 32: Weighing With Wheelchair
12.1.1 Weighing with wheelchair Place wheelchair and patient in the centre of the weighing balance. Engage brakes on wheelchair Do not leave the patient unattended Wait until patient is sitting still and read weighing value 1. Loosen the brakes and carefully pull off the transportation stretcher/wheelchair with patient ... -
Page 33: Hold Function
12.3 HOLD function The balance has an integrated standstill function (mean value calculation). With this function it is possible to weigh people accurately even if they do not stand still on the weighing plate. Start balance by pressing Wait for stability display „STABLE to appear. ... -
Page 34: Display Additional Last Decimal Place
12.4 Display additional last decimal place (short-time, additional decimal place) Press and hold for about 2 s whilst weighed result is being shown. The second decimal place will be shown for approx. 5 s. This value is not considered as verified and may not be used for the purpose of a verified balance. -
Page 35: Classification Of Bmi Values
• Reliable calculation of BMI is restricted to a body height of 100 cm to 200 cm and a weight of >10 kg. • If weighing has to take place under unsteady conditions, you can be stabilise the display by applying the Hold function. 12.5.2 Classification of BMI values Weight classification for adults over 18 years of age using the BMI in accordance with WHO, 2000 EK IV and WHO 2004. -
Page 36: Automatic Switch-Off Function „Auto Off
12.6 Automatic switch-off function „AUTO OFF“ The weighing scale will switch off automatically after the allotted time as long as neither the display unit nor the weighing plate is operated. • Menu settings: [F1 oFF] [oFF 0/3/5/15/30] (see chap. 12) ... -
Page 37: Display Background Illumination
12.7 Display background illumination • Menu settings: [F2 bk] [bL on / bL oFF / bL AU] see chap. (12) In weighing mode, press and the first function [F1 oFF] will be displayed. Press until [F2 bk] is displayed. ... -
Page 38: Menu
13 Menu Access to service menu „tCH“ is locked in verified balances. To disable the access lock, destroy the seal and actuate the adjustment switch. For position of adjustment switch, see chap. 17. Attention: After destruction of the seal the weighing system must be re-verified by an authorised agency and a new verification wire/seal mark fitted before it can be reused for applications subject to verification. -
Page 39: Menu Overview
13.2 Menu overview Function Settings Description oFF 0* Automatic shutdown off oFF 3 Automatic shutdown after 3 min. Automatic cutout oFF 5 Automatic shutdown after 5 min. Auto Off oFF 15 Automatic shutdown after 15 min. oFF 30 Automatic shutdown after 30 min. bl on Back lighting for display on bl oFF... - Page 40 Data output format (Setting P Prt, P Auto, P Cont only!) The currently set data output format will be displayed after the Baud rate has been confirmed. Select desired format by and confirm with Sd0 – on/off Cont 1 Default Continuous data output, selectable “Sending 0”...
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Page 41: Data Output Rs 232
• Use a suitable cable to connect the weighing balance to the interface of the printer. Faultless operation requires an adequate KERN interface cable. • Communication parameters (baud rate, bits and parity) of balance and printer must match. -
Page 42: Printer Operation
14.3 Printer operation Printout examples: ST,GS 20.0kg stable weighing value US,GS 86.6 kg instable weighing value 15 Error messages Display Description Zero range exceeded (on start-up or when pressing the key) • Load on weighing pan • Excess load, during zero setting of weighing scale •... -
Page 43: Servicing, Maintenance, Disposal
Sterilisation of the appliance not allowed. 16.4 Servicing, maintenance The appliance may only be opened by trained service technicians who are authorized by KERN. Disconnect the scales before opening. 16.5 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. -
Page 44: Instant Help
17 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 does The balance is not switched on. -
Page 45: Verification
18 Verification General introduction: According to EU directive 2009/23/EC balances must be officially verified if they are used as follows (legally controlled area): a) For commercial transactions if the price of goods is determined by weighing. b) For the production of medicines in pharmacies as well as for analyses in the medical and pharmaceutical laboratory. - Page 46 Position adjustment switch and seals Self-destroying seal mark Cover Adjustment switch MWA_M-BA-e-1730...
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Page 47: Verification Validity Period (Current Status In G)
18.1 Verification validity period (current status in G) Multi-function balances (including chair and wheelchair scales) 4 years in hospitals Multi-function balances, when not located in hospitals (for unlimited example, doctor's offices and nursing homes) Baby weighing scales and mechanical birth weight scales 4 years Bed scales 2 years... -
Page 48: Adjustment
1. Carry out adjustment as closely as possible to admissible maximum load of weighing scale. Info about test weights can be found on the Internet at: http://www.kern-sohn.com. • Observe stable environmental conditions. - Page 49 Press one after the other, [P1 SPd] will appear Press , „P2 CAL“ will be displayed Operate adjustment switch; for position see chap.16 Press , [dESC] is displayed Press repeatedly until [CAL] will be displayed. ...
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Page 50: Accessories (Optional)
Place adjustment weight in the centre of the weighing pan Wait until stability display „STABLE“ appears Confirm with [PASS] is displayed. The balance carries out a selftest, after that [Err19] will be displayed and a signal will sound. ...