MCB, MPT Medical Chair Scale and Personal Scale Operating Instructions Ver 3.4 March 2019

GB

KERN MCB, MPT Version 3.4 2019-03

Operating instructions chair scales, personal scales Table of Contents 1

Technical Data ... 5

2

Declaration of conformity ... 6

2.1

Explanation of the graphic symbols for medical devices ... 6

3

Basic Information (General) ... 9

3.1 3.2 3.3 3.4 3.5

Specific function... 9 Proper use ... 9 Improper Use ... 10 Warranty ... 11 Monitoring of Test Resources ... 11

4

Basic Safety Precautions ... 11

4.1 4.2 4.3 4.4

Pay attention to the instructions in the Operation Manual ... 11 Personnel training ... 11 Preventing contamination ... 12 Appropriate use ... 12

5

EMC guidance and manufacturer's declaration ... 13

6

Appliance overview ... 17

7

Overview of displays ... 18

8

Keyboard overview ... 19

9

Transportation & Storage... 20

9.1 9.2

Testing upon acceptance ... 20 Packaging / return transport ... 20

10

Unpacking, Setup and Commissioning ... 21

10.1 Place of installation / place of operation... 21 10.2 Unpacking ... 21 10.3 Scope of delivery chair scales ... 22 10.4 Installing the chair scales ... 22 10.4.1 Levelling ... 23 10.5 Scope of delivery, personal scales... 24 10.6 Installing the personal scales ... 24 10.7 Assemble the wall bracket ... 24 10.8 Attaching an optional stand (only MPT)... 25 10.9 Battery operation ... 25 10.10 Operation using a rechargeable battery (optional) ... 27 10.10.1 Battery operation ... 27 10.10.2 Rechargeable battery operation (optional)... 29 10.11 Connecting the power supply ... 32 10.12 Initial Commissioning ... 32

11

Menu overview ... 33

12

Operation ... 34

12.1 12.2

Weighing ... 34 Taring ... 35

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12.3 12.4 12.4.1 12.5 12.5.1 12.6 12.6.1

Hold function (Standstill function) ... 35 Calculation of the Body Mass Index ... 36 Classification of BMI values ... 37 PRE-TARE function ... 37 PRE-TARE function with 5 memories ... 38 Print function ... 40 Interface parameters for RS232 (only MPT) ... 41

13

Service, maintenance, disposal ... 41

13.1 13.2 13.3 13.4 13.5

Cleaning ... 41 Cleaning / disinfecting ... 41 Sterilisation ... 41 Service, maintenance ... 42 Disposal ... 42

14

Error messages ... 42

15

Instant help... 43

16

Verification ... 44

16.1 16.2 16.3 16.3.1 16.4 16.4.1 16.5

Adjustment ... 44 Adjustment controls and seals ... 46 Checking the balance verification settings ... 47 Menu overview in service mode (adjustment switch in adjustment position) ... 47 Navigation in the menu ... 48 Exit menu and save ... 48 Verification validity period (current status in G) ... 51

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MCB-NM_MPT-NM-BA-e-1934

1 Technical Data KERN (Type) Model

MCB 300K100NM

MPT 300K100NM

MCB 300K100M

MPT 300K100M

Readability (d)

100 g

Weighing range (max)

300 kg

Minimum weight (min)

2 kg

Verification value (e)

100g

Verification class

III

Recommended adjustment weight, (Class)

300 kg (M1)

Weighing Units

kg

Stabilization time (typical)

2-3 sec.

Warm-up time

10 min Supply voltage: 100 V – 240 V AC 50/60 Hz

Electric Supply

Mains adapter: 12 V / 500 mA or 15 V / 300 mA Battery operation: 6 x 1,5 V size AA Service life 50 h

Auto Off

After 3 min without load change (adjustable)

Operating temperature

+ 5°C … + 35°C

Storage temperature

- 20°C … + 60°C

Humidity of air Dimensions (B x D x H) mm

max. 80 % (not condensing) 647 x 860 x 910

Dimensions display unit (B x D x H) mm Dimensions seating surface / Weighing platform Weight kg (net) Calibrated in accordance with

2014/31/EU Medical product in accordance with 93/42/EEC Rechargeable battery operation (optional)

MCB-NM_MPT-NM-BA-e-1934

340 x 450 x 90

210 x 110 x 50 465 x 530 x 410

340 x 450 x 90

21.4

8,5 grade III

Category I with measuring function Loading time: 14 h; operating time: 50 h; 7.2 V / 2000 mA

Loading time: 14 h; operating time: 50 h; 7.2 V / 2000 mA

5

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 calibrated 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 for medical devices All medical scales marked in this way meet the requirements of the following directives: 1. 2014/31/EU: Directive on non-automatic weighing instruments 2. 93/42/EC: Directive concerning medical devices Scales marked in this way underwent the conformity assessment procedure according to Directive 2014/31/EU for scales belonging to 3rd accuracy class.

SN WOC 17000100

Designation of the serial number of every device, applied at the device and on the packaging Number here as example

Identification of the manufacturing date of the medical product. Year and month here as example 2019-03

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MCB-NM_MPT-NM-BA-e-1934

“Please note the accompanying documents“ or “Observe operating instructions”

Identification of manufacturer of medical product including address Kern & Sohn GmbH D–72336 Balingen, Germany www.kern-sohn.com

Please note operating instructions

Please note operating instructions

“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.

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15 V DC / 300 mA or 12 V DC / 500 mA

Display of supply voltage for scales with polarity display (Polarity and values serving as an example) Do not use the chair scales to transport people and objects! Do not stand on the footrests when you get on or off the chair scales!

After taking chair scales to patient, ensure scales are level before starting the weighing process.

Power connection

Seal KERN SEAL

Supply voltage direct current

Information

Level balance before use

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3 Basic Information (General)

Weighing instruments have to be verified for the purposes stated below in accordance with Directive 2014/31/EU. 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.” 3.1

Specific function Indication  

Determining the body weight in the medical practice area. To be used as “non-automatic weighing instruments“, that is, a person will step or sit down carefully onto the centre of the seating surface or weighing platform. The weighing value can be read after a steady display value has been achieved.

Contra-  indication

No contraindication known.

3.2 Proper use These scales serve as a means of determining the weight of people in a seated or standing position, in medical treatment rooms. The scales are suitable for recognizing, preventing and controlling illnesses. Scales fitted with a serial interface may only be connected to appliances in compliance with Directive EN60601-1.

The person to be weighed should be seated in the centre of the seating surface or step onto the weighing platform and sit or stand still. As soon as a stable weighing value is reached the weighing value can be read. The scales are designed for long-term usage. Scales may only be used for people who are able to sit or stand still. The balances should be checked for correct condition prior to each utilisation by a person familiar with proper operation of the balance.

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When the scale doesn’t connect with the transmission cable, please do not touch the transmission port to prevent ESD interference occurs.

    



Do not use the chair scales to transport people and objects! Until the weighed person stays on the chair scales, the wheel brakes must always be activated. The armrests of the chair scales are designed solely for resting arms and not for supporting. When going off and on, a trained person should fold the armrests up (raise) and help the weighed person. The chair scales should always be placed on flat, smooth surface. Do not stand on the footrests when you get on or off the chair scales!

3.3 Improper Use Do not use these scales for dynamic weighing processes. Do not leave continuous loads on the seating surface or weighing plate. This may damage the measuring system. Impacts and overloading exceeding the stated maximum load (max) of the seating surface or 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. 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.

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3.4

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

3.5 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.

4 Basic Safety Precautions 4.1

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.

4.2

Personnel training

The medical staff must apply and follow the operating instructions for proper use and care of the product.

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4.3 Preventing contamination To prevent cross-contamination (fungal skin infections, …), clean the seating surface or weighing platform every time. Recommendation: after a weighing procedure that could potentially result in contamination (e. g. after weighing that involves direct skin contact).

4.4

Appropriate use Do not use the chair scales to transport people or objects!

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•

Always get on and off the chair scales in the presence of a qualified person (see Chapter 4.2)

•

Before every use inspect the scales for any signs of damage.

•

Maintenance and repeated verification Chair scales should be maintained and verified at regular intervals (see chapter 16.5)

MCB-NM_MPT-NM-BA-e-1934

5 EMC guidance and manufacturer's declaration Guidance and manufacturer’s declaration-electromagnetic emissions The MCB-NM, MPT-NM is intended for use in the electromagnetic environment specified below. The customer or the user of the MCB-NM, MPT-NM should assure that it is used in such an environment. Emission test RF emissions CISPR 11

Compliance Group 1

Electromagnetic environment-guidance The MCB-NM, MPT-NM uses RF energy only for its internal function. Therefore, its RF emissions are very low and are not likely to cause any interference in nearby electronic equipment.

RF emissions CISPR 11

Class B

Harmonic emissions IEC 61000-3-2 Voltage fluctuations /flicker emissions IEC 61000-3-3

Class A

The MCB-NM, MPT-NM is suitable for use in all establishments, including domestic establishments and those directly connected to the public low-voltage power supply network that supplies buildings used for domestic purposes.

Compliance

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Guidance and manufacturer’s declaration-electromagnetic immunity The MCB-NM, MPT-NM is intended for use in the electromagnetic environment specified below. The customer or the user of the MCB-NM, MPT-NM should assure that it is used in such an environment. Immunity test

IEC 60601 test level

Compliance level

Electromagnetic environment-guidance

Electrostatic discharge(ESD) IEC 61000-4-2

± 6 kV contact ± 8 kV air

± 6 kV contact ± 8 kV air

Floors should be wood, concrete or ceramic tile. If floors are covered with synthetic material, the relative humidity should be at least 30% Mains power quality should be that of a typical commercial or hospital environment.

Electrical fast transient/burst IEC 61000-4-4

± 2kV for power supply lines + 1kV for input/output lines

± 2kV for power supply lines Not applicable

Surge IEC 61000-4-5

± 1kV line(s) to line(s) ± 2kV line(s) to earth

± 1kV differential mode Not applicable

Mains power quality should be that of a typical commercial or hospital environment.

Voltage Dips, short interruptions and voltage variations on power supply input lines IEC 61000-4-11

<5% UT(>95% dip in UT) for 0,5 cycle 40% UT(60% dip in UT) for 5 cycles 70% UT(30% dip in UT) for 25 cycles <5% UT(>95% dip in UT) for 5 s

<5% UT(>95% dip in UT) for 0,5 cycle 40% UT(60% dip in UT) for 5 cycles 70% UT(30% dip in UT) for 25 cycles <5% UT(>95% dip in UT) for 5 s

Power frequency(50/60 Hz) magnetic field IEC 61000-4-8

3 A/m

3 A/m

Mains power quality should be that of a typical commercial or hospital environment. If the user of the MCB-NM, MPT-NM requires continued operation during power mains interruptions, it is recommended that the MCBNM, MPT-NM be powered from an uninterruptible power supply or a battery. MCB-NM, MPT-NM power frequency magnetic fields should be at levels characteristic of a typical location in a typical commercial or hospital environment.

NOTE UT is the a.c. mains voltage prior to application of the test level.

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MCB-NM_MPT-NM-BA-e-1934

Guidance and manufacturer’s declaration-electromagnetic immunity The MCB-NM, MPT-NM is intended for use in the electromagnetic environment specified below. The customer or the user of the MCB-NM, MPT-NM should assure that is used in such and environment. IEC 60601 test Compliance Electromagnetic environmentImmunity test level level guidance Portable and mobile RF communications equipment should be used no closer to any part of the MCB-NM, MPT-NM including cables, than the recommended separation distance calculated from the equation applicable to the frequency of the transmitter. Conducted RF IEC 61000-4-6

3 Vrms 150 KHz to 80 MHz

3 Vrms

Recommended separation distance: d = 1,2 √P d = 1,2 √P 80MHz to 800 MHz d = 2,3 √P 800MHz to 2,5 GHz Where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer and d is the recommended separation distance in metres (m).

Radiated RF IEC 61000-4-3

3 V/m 80MHz to 2,5 GHz

3 V/m

Field strengths from fixed RF transmitters, as determined by an a electromagnetic site survey , should be less than the compliance level in b each frequency range . Interference may occur in the vicinity of equipment marked with the following symbol:

NOTE1 At 80 MHz and 800 MHz, the higher frequency range applies. NOTE2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people. a Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured field strength in the location in which the MCB-NM, MPT-NM is used exceeds the applicable RF compliance level above, the MCB-NM, MPTNM should be observed to verify normal operation. If abnormal performance is observed, additional measures my be necessary, such as re-orienting or relocating the MCB-NM, MPT-NM b Over the frequency range 150 kHz to 80 MHz, field strengths should be les than 3 V/m.

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Recommended separation distance between portable and mobile RF communications equipment and the MCB-NM, MPT-NM The MCB-NM, MPT-NM is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of the MCB-NM, MPT-NM can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the MCB-NM, MPT-NM as recommended below, according to the maximum output power of the communications equipment. Rated maximum output power of transmitter

Separation distance according to frequency of transmitter m

W

150 kHz to 80 MHz d =1,2√P

80 MHz to 800 MHz d =1,2√P

800 MHz to 2,5 GHz d =2,3√P

0,01

0,12

0,12

0,23

0,1

0,38

0,38

0,73

1

1,2

1,2

2,3

10

3,8

3,8

7,3

100

12

12

23

For transmitters rated at a maximum output power not listed above, the recommended separation distance d in metres (m) can be estimated using the equation applicable to the frequency of the transmitter, where p is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer. NOTE1 At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies. NOTE2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.

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6 Appliance overview

Chair scales MCB

1. Gripping handles 2. Folding arm rests 3. Seating surface 4. Locking castors 5. Foot rests 6. Display unit at rear Personal scales MPT

Chair scales MCB

2

1. Weighing plate 2. Bubble level 3. Height adjustable rubber feet 4. Gripping handle 5. Display unit MCB-NM_MPT-NM-BA-e-1934

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7 Overview of displays

Display

0

Designation

Description

Stability display

Scales are in a steady state

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.

´

18

Power supply connected

Illuminates in the event of power supply via mains adaptor

BMI function active

Calculated BMI value

HOLD function active

Hold/Save function active

PRE-Tare function active

Preset tare value is enabled

Net weight display

Net weight will be displayed

Weight value display

Current weight value will be displayed

MCB-NM_MPT-NM-BA-e-1934

8 Keyboard overview

Button ON OFF

PRINT

BMI

HOLD

PRETARE

TARE

CLEAR

ENTER

Designation

Function

ON/OFFswitch

Turn on/off

PRINT button Data transfer via interface

BMI button

Calculation of the Body Mass Index

HOLD button

Hold function/Calculation of a stable weight value

Zero setting key

Balance will be reset to 0.0 kg. Possible up to max. 2% of maximum load for verified scales or 2 % or 100% of maximum load for all other scales (selectable via menu)

Save button

Retrieve memory 1-5

Pretare button

Call tare function with defined values

Tare button

Tare balance

CLEAR button

This deletes manual number entry

ENTER-key

Import of numeric entry

Numeric keys Numeric entry …

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9 Transportation & Storage 9.1

Testing upon acceptance

When receiving the appliance, please check packaging immediately, and the appliance itself when unpacking for possible visible damage. 9.2

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.

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MCB-NM_MPT-NM-BA-e-1934

10 Unpacking, Setup and Commissioning

10.1 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, vapors and dust;



Do not expose the device to extreme dampness for longer periods of time. Nonpermitted 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. 10.2 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.

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