KERN MBD Baby Scales User Manual

KERN MBD Baby Scales

Product Information

Specifications

• Brand: KERN & Sohn GmbH
• Model: MBD
• Readability:
• Weighing Range (Max):
• Reproducibility:
• Linearity:
• Units:
• Stabilisation Time:
• Warm-up Time:
• Operating Temperature:
• Auto-Off:

Product Usage Instructions

1. Transport and Storage
   Upon acceptance, verify the product for any damages. Handle with care during transportation and store in a safe place.

2. Unpacking, Setup, and Start-Up
   Choose a suitable installation site and unpack the product carefully. Set up the scales according to the provided instructions. Make sure to insert batteries correctly for battery operation.

3. Scales Setup
   Follow the setup instructions provided in the manual for proper functioning of the scales.

4. Scope of Delivery
   Check the delivered items against the packing list to ensure all components are included.

5. Operation
   The display will show the weight readings. Familiarize yourself with the keyboard functions for accurate measurements.

6. Display
   Interpret the weight readings displayed on the screen.

7. Keyboard Overview
   Understand the functions of each key on the keyboard for easy operation.

FAQ

• Q: What should I do if I encounter error messages?
  A: Refer to the error messages section in the manual for troubleshooting steps.

• Q: How should I clean and maintain the baby scales?
  A: Follow the cleaning and maintenance instructions provided in the manual to ensure proper functioning of the scales.

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

Operating Manual Baby scales
KERN MBD
Version 1.0 2017-08 GB

Technical data

Declaration of conformity

Current EC/EU Declaration of Conformity is available online at: www.kern- sohn.com/ce

Basic guidelines (general information)

Proper use

1. The scales are used to determine the weight of babies in a lying position; they are intended for private use. Using the scales in medicine is not allowed.
2. In order to weigh the baby, put it on the weighing pan. The weight value can be read out once it is stabilised.
3. An authorised person must check for proper condition of the scales prior to each use.

Additional information on the baby scales:

• Baby scales are intended for the weighing of children in a lying position. If the child is to be weighed in a sitting position, place it in the centre of the weighing pan.
• You must continuously observe the baby placed on the weighing pan to avoid falling. Proceed according to the guideline placed on the weighing pan!

Improper use

• Do not expose the weighing pan to a prolonged load. It may cause damage to the measuring mechanism.
• Always avoid impacts and overloads of the scales exceeding the specified maximum (Max) load by reducing the existing load with a tare. An impact or overload could re-sult in damage to the scales.
• Never use the scales in potentially explosive areas. The serial product version is not explosion-proof.
• Do not introduce any structural modifications to the scales. It may cause incorrect weighing results, violation of technical safety conditions and may result in destruction of the scales.
• The scales must only be operated in accordance with the guidelines specified above. Other scopes/fields of use must be approved by KERN in writing.

Warranty
The warranty expires in the following cases:

• the instructions contained herein are not observed;
• the scales are not used as intended;
• the scales are modified or opened;
• mechanical damage or damage caused by utilities or liquids;
• natural wear and tear;
• improper setting or incorrect electrical system;
• the measuring mechanism is overloaded;
• the scales fall.

Monitoring of test resources
As part of the quality assurance system, the technical measuring properties of the scales and (if applicable) the testing weight should be checked at regular intervals. To this end, the user responsible should determine an appropriate cycle, type and scope of such check. Information regarding the monitoring of test resources (scales and test weights) is available at KERN website (www .kern-sohn.com). The test weights and scales can be calibrated quickly and cheaply at KERN calibration laboratory accredited by DKD (Deutsche Kalibrierdienst) (in reference to the national standard).

Basic safety instructions

Observance of the instructions contained in the Operating Manual
Carefully read this Operating Manual before setting and starting the appliance, even if you are already familiar with KERN balances.

Transport and storage

1. Verification upon acceptance
   Immediately check the received package for visible external damage — the same applies to the device after unpacking.

2. Packaging

3. Keep all parts of the original packaging for any possible return transport.

4. Only use the original packaging for return transport.

5. Prior to dispatch, disconnect all cables and remove any loose/mobile parts.

6. Install the transport protecting devices, if any. Protect all parts (such as the weighing platform, power unit, stand, operating panel, etc.) against slipping and damage.

Unpacking, setup and start-up

Site of installation, location of use

• The scales are designed in such a way that reliable weighing results are ensured in normal conditions of use.
• The scales will operate accurately and fast if you choose the right location.
• Therefore, observe the following rules when choosing the installation site:
  • Place the scales on a stable and flat surface.
  • Avoid extreme temperatures and temperature fluctuations that exist e.g. if the scales are located by a heater or in a place exposed to direct sunlight.
  • Protect the scales against direct draughts due to open windows and doors.
  • Avoid shocks during weighing.
  • Protect the scales against high humidity, vapours and dust.
  • Do not expose the device to long periods of extreme humidity. Undesired dew (condensation of air moisture on the appliance) may occur if the cold appliance is placed in a considerably warmer environment. In this case, acclimatize the device for approx. 2 h at the ambient temperature.
  • Avoid static charge of the scales and persons to be weighed.
  • Avoid contact with water.
• Major indication deviations (incorrect weighing results) may occur in case of electro-magnetic fields, static charges or unstable power supply. In such a case, change the location.

Unpacking
Carefully remove the complete scales or individual parts thereof from the packaging and place it in the intended location. If the power unit is used, the power cable may not pose a tripping hazard.

1. Scales setup
   The weighing pan must be in a perfectly horizontal position.

2. Scope of delivery
   Serial accessories:

3. Operating Manual

4. Batteries (2 x 1.5V AAA batteries)

Battery operation (inserting and removing the batteries)

• The battery compartment is located at the bottom.
• Turn the scales and remove the cover from the battery compartment. Insert the batteries according to their polarity (observe the marking at the bottom of the battery compartment).
• Close the battery compartment and turn the scales again.
• When the batteries are discharged, the display will indicate “bAtt” – in this case re-place the batteries.
• If the scales are not used for a long time, remove the batteries and store them separately. Any electrolyte flowing out could damage the scales.

Initial start-up

• To obtain accurate weighting results using the electronic balances, the devices must reach an appropriate operating temperature (see Chapter 1: “Warm-up time”). The scales must be turned on during warming.
• The scales accuracy depends on the local acceleration of gravity.

Operation

Display

Keyboard overview

Operation

Weighing

• Start the scales by pressing ON/OFF. After the self-test, the device shows the zero value – it is now in the weighing mode.
• Carefully place the baby on the weighing pan and read the weighing value.

Taring

• The specific weight of any preload used for weighing can be tared by pressing the button – during the subsequent weighing processes the scales will display the actual weight of the baby.
• Place an object (e.g. a towel or pad) on the weighing pan. Wait until the “unstable” ( ̴ ) symbol disappears.
• Press TARE, the device will display the zero value.
• Place the baby on the weighing pan. Wait until the “unstable” ( ̴ ) symbol disap-pears and then read the weighing result.
• Once the scales are unloaded, the tare value will be displayed with a negative value sign.

Switching the weight units
If zero is indicated, wait until the “unstable” ( ̴ ) symbol disappears. Press TARE. The weight unit will be switched (kg ↔ lb), you may now start the next weighing process.

Memory function
The scales are provided with an integrated memory function that allows to memorise the weight values and display them when necessary.

Memorising the weight values:

• Start the scales by pressing ON/OFF and wait until the zero value appears.
• Place the baby on the weighing pan.
• Wait until the “unstable” ( ̴ ) symbol disappears.
• Press M+, the weight value will be memorised. The symbol will be shown for 5 s, and then it will disappear.

Displaying the memorised weight value:

• Press MC, the display will show the memorised weight value along with the symbol displayed for 5 s. Then the current weight value will be displayed.
• The memorised weight value will be stored in the memory until a new value is memorised or the battery is discharged.

HOLD function

• The scales are provided with an integrated HOLD (indication of average value) function. It allows for a precise weighing of a baby also when it does not lie calmly on the weighing pan.
  • Start the scales by pressing ON/OFF and wait until the zero value appears.
  • Wait until the “unstable” ( ̴ ) symbol disappears.
  • Place the baby on the weighing pan.
  • Wait until the “unstable” ( ̴ ) symbol disappears.
  • Press HOLD, the weight of the baby will be displayed and “frozen”.
• For 5 s, the device will display the difference between the “frozen” and the memo-rised weight value.
• The for 5 s the device will show the difference value and the current value.
• If the value is negative, the indication will not be frozen.
• The frozen weight value can be removed by pressing HOLD again – the scales will be switched back to the weighing mode.
• The weight can be locked only, when the weight is over than 1 kg.

Auto-Off

• The scales are provided with the Auto-Off function. If the device is not used for over 20 s, it will be automatically switched off.
• If you press any button, the scales will be restarted and switched to the weighing mode.

Error messages

The scales are automatically turned off after approx. 2 s, and then the following error messages are displayed:

Servicing, maintenance and disposal

1. Cleaning
   Do not use any aggressive cleaning agents (solvents, etc.), but clean the device using only a cloth moistened with a mild soap lye or a household cleaning agent. En-sure that no liquid penetrates into the device. Wipe the device dry using a soft cloth. Loose contaminants can be carefully removed with a brush or manual vacuum cleaner.
   The scales may not be tilted or turned, as it may cause damage.
   Immediately remove any contaminants.

2. Servicing and maintenance
   The device may only be operated and maintained by service technicians trained and authorised by KERN.

3. Disposal
   The packaging and the device must be disposed of according to the national or regional law applicable in the location where the appliance is used.

Assistance in case of minor failures

In case of any disturbance in the programme, switch off the scales and disconnect them from power supply for a while. Then restart the weighing process.

Assistance:

Disturbance Possible cause

• The weight indication does not appear.
  • The scales are off.
  • Improperly inserted or discharged batteries.
  • No batteries.
• The weight indication is constantly changing.
  • Draught/movements of air.
  • Table/floor vibration.
  • The weighing pan is in contact with solids or is in-correctly installed.
  • Electromagnetic fields / static charges (choose an-other location — turn off the device causing thedisturbance, if possible).
• The weighing result is obviously incorrect.
  • The weight indication was not cleared.
  • High temperature fluctuations.
  • The warm-up time was not sufficient.
  • Electromagnetic fields / static charges (choose an-other location — turn off the device that causes the disturbance, if possible).

In case of any other error messages, you must restart the scales. Contact the manufacturer if the error message persists.

References

• Your Name as Your Email | Hover Realnames
• KERN & SOHN: Waagen, Mikroskope & Messinstrumente

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