Professional Weighing Equipment
Compact Kitchen Scales
OPERATING MANUAL
KMR 6000
KHR 500
KHR 3000
KHR 123
1
Declaration of Conformity
Imperial version
Metric version
KMR 6000
KHR 500
KHR 3000
KHR 123
KMR 6000
KHR 500
KHR 3000
KHR 123
Mark applied
EU Directive
Standards
2004/108/EC
EN 61326-1: 2006
Declaration of conformity for apparatus with CE mark:
We hereby declare that the product to which this declaration refers
conforms to the following standards.
Electronic scale: Compact Scales series
Signature:
Boon Lim, R & D Manager
July 17, 2014
LW Measurements LLC, 3510 Industrial Drive, Unit H Santa Rosa, CA 95403
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Customer Service
USA
LW Measurements LLC, 3510 Industrial Drive,
Unit H Santa Rosa, CA 95403
USA
Tel: (707) 542-2185
FAX: (707) 542-3285
EUROPE
LW Measurements Europe Ltd
Chalkwell Park House 700 London Road
Westcliff-on-Sea Essex SS0 9HQ
United Kingdom
Tel: 01702-476700
Fax: 01702-477380
ASIA
LW Measurements PTY Ltd
Block 1004, Toa Payoh North
#03-16 Singapore 318995
Tel: (65) 6458 3438
HP: (65) 8119 3401
http://lwmeasurements.com
Refer to our website for information about local customer service
centers and details of their addresses.
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Introduction
What you should know about these Operating Instructions:
Tree® Professional Weighing Equipment products are simple to
operate.
Nevertheless, you should read through these operating
instructions in their entirety, so that you can make optimum use of
the full potential and the diverse possibilities of the weighing
machine in your daily work.
These operating instructions contain guidance in the form of
pictograms and keyboard diagrams, which should help you in
finding the required information:
For the labeling of potential hazards and advice, please see
Section 1: Safety below.
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Contents
Section
Heading
1
Safety
1.1 Representation and symbols
1.2 Safety recommendations
2
Your weighing machine
2.1 Construction and functions
2.1.1 Construction of the weighing machine
2.1.2 Functions of the weighing machine
2.2 Application, conformity
2.2.1 Correct use of the weighing machine
2.2.2 Conformity
2.3 Technical data
3
Getting started with your weighing machine
3.1 Unpacking the equipment
3.2 Scope of delivery
3.3 Parts description
3.4 Assembling your weighing machine
3.5 Installing batteries / Connecting the AC adapter
3.6 Choice of a suitable location
3.7 Checking the mains voltage
3.8 Calibrating the weighing machine
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4
Working with the application menu using the
intelligent keypad
4.1 Display and key functions
4.1.1 Display messages
4.1.2 Key functions
4.2 Program options
4.2.1.1 Setting Auto Backlight
4.2.1.2 Setting Auto Shut Off
4.2.1.3 Return to Weighing Mode
4.2.3 Weighing
4.2.3.1 Before weighing
4.2.3.2 Error messages
4.2.3.3 Weighing procedures
5
Calibration using an external calibration weight
6
Maintenance and service
7
Transport and storage
7.1 Transportation and shipping
7.2 Storage
6
1 Safety
1.1 Representations and symbols
Important instructions, which involve safety, are highlighted with the
appropriate mark:
1.2 Safety recommendations
When using the weighing equipment in surroundings with increased safety
requirements, the corresponding regulations must be observed.
The weighing machine may only be used with the power adapter supplied
exclusively for use with the weighing machine.
Before inserting the power adapter, the user must ensure that the operating
voltage stated on the power adapter agrees with the mains voltage.
If not, please contact Customer Service at the address above.
If the power adapter or its cable is damaged, the weighing machine must
immediately be disconnected from the electricity supply (pull out the power
adapter).
The weighing machine may only be operated from mains electricity supply with
a power adapter which is in perfect condition.
If there should be any reason to believe that it is no longer possible to operate
the weighing machine without danger, the weighing machine is to be
immediately unplugged from the electricity supply (pull out power adapter) and
secured against inadvertent operation.
In carrying out maintenance work, it is essential to follow the recommendations
in Chapter 6: Maintenance and service.
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The weighing machine must not be operated in an area subject to explosion
Figure 2.1 Your weighing machine
risks.
Care must be taken when weighing liquids to ensure that no liquid is spilled
into the inside of the weighing machine or into connections on the rear of the
equipment or the power adapter. If liquid is spilled on the weighing machine, it
must immediately be unplugged from the mains electricity supply (pull out
power adapter).
The weighing machine may only be operated again after it has first been rechecked by a service technician.
These operating instructions must be read by each operator of the equipment
and must be available at the workplace at all times.
2 Your weighing machine
2.1 Construction and functions
2.1.1 Construction of the weighing machine
The weighing machine consists of a (1) base, (2) plastic platter, (3) stainless
steel platter, (4) clear plastic bowl, (5) A/C adapter and this operating manual.
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3
2
Figure 2.2 Plastic platter
Figure 2.4 Clear plastic bowl
Figure 2.3 Stainless steel platter
Figure 2.5 A/C adapter and manual
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Model number
Capacity
Graduation
Platter Size
KMR 6000
6000 g
1 g
5.75 in x 5.75 in
KHR 3000
3000 g
0.1 g
5.75 in x 5.75 in
KHR 500
500 g
0.01 g
5.75 in x 5.75 in
KHR 123
120g
0.001g
3.85 in
Net/gross weight
1.7 lb / 4 lb
Package
(Standard carton)
11.5 x 9.25 x 5.5 (in3)
Operating Temp.
32-104℉
Power source
6 x AA Dry cells (not included) or Auto Sensing
Transformer 85-265V AC
2.1.2 Functions of the weighing machine
The Kitchen Scale is high-quality electronic precision weighing machine with
the following specifications
a. Imperial weight unit version
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Model number
Capacity
Graduation
Platter Size
KMR-6000
6000 g
1 g
14.5 x 14.5 cm
KHR-3000
3000 g
0.1 g
14.5 x 14.5 cm
KHR 500
500 g
0.01 g
14.5 x 14.5 cm
KRH 123
120g
0.001g
3.85 in
Net/gross weight
920 g / 1300 g
Package
(Standard carton)
29 x 23.5 x 14(cm3)
Operating Temp.
0-40 ºC
Power source
6 x AA Dry cells (not included) or Auto Sensing
Transformer 85-265V AC
Metric weight unit version
FEATURES
Auto shut off (selectable)
Auto zero tracking
Low battery indication
1/2000 & 1/30000 division available
Large container weighing
Auto calibration
Large LCD
kg/g/lb/lb:oz/oz conversion; KHR123 g,mg,dwt,ozt,gn
Auto backlight (selectable)
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2.2 Application, conformity
2.2.1 Correct use of the weighing machine
The maximum allowable load of the weighing machine must never be
exceeded, otherwise the weighing machine may be damaged.
In using the weighing machine in combination with other appliances as well as
with appliances produced by other manufacturers, the appropriate regulations
for the safe use of the relevant attachments and their application in
accordance with instructions must be observed.
2.2.2 Conformity
The weighing machine has been manufactured and tested in accordance with
the standards and recommendations set out in the declaration of conformity.
The power adapter produced for the operation of the weighing machine and
intended exclusively for this application complies with the appropriate electrical
protection class.
2.3 Technical data
The following applies to the KMR series
Power supply:
Input: The AC input requirement could be 85-265 V (50 to 60Hz AC
(+/-15-20%);
Output: 9V DC 100mA
Allowable ambient conditions
Temperature: 0°C - 40°C, 32°F - 104°F
Relative humidity: 25% - 85%, non-condensing
If you have any questions on the technical data or require detailed technical
information on your balance, please contact your technical representative.
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3 Getting started with your weighing machine
3.1 Unpacking the equipment
The machine is delivered in an environmentally-friendly carton, specifically
developed for this precision instrument, which provides optimum protection for
the machine during transportation.
We suggest that you retain the original packaging in order to avoid
transportation damage if re-shipping or transporting the machine and to allow
the unit to be stored in the best conditions if it is out of operation for an
extended period.
In order to avoid damage, attention must be given to the following points when
unpacking the weighing machine:
Unpack the weighing machine carefully. It is a precision instrument.
When outside temperatures are very low, the machineshould first be
stored for some hours in the unopened transport package in a dry
room at normal temperature, so that no condensation settles on the
unit when unpacking.
Check the weighing machine immediately after unpacking for
externally visible damage. If you should find transport damage, please
inform your service representative immediately.
If the machine is not to be used immediately after purchase but only at
a later time, it should be stored in a dry place where fluctuations in
temperature are as small as possible (see Chapter 7 .Transport,
storage.).
Read through these operating instructions, even if you already have
prior experience with weighing equipment, before you work with the
unit and pay attention to the Safety recommendations (see Chapter 1
.Safety).
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Component delivered present
yes / no
Weighing Machine
Stainless Steel Platter
Plastic Platter
Plastic Bowl
Power adapter
Operating manual
3.2 Scope of delivery
Inspect delivery for completeness immediately on unpacking all components.
Checklist for complete delivery
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3.3 Parts description
LEFT SIDE
AC adaptor socket
TOP
Display
ON / OFF key
Turns the power on/off
UNIT key
Toggles weighing units
Tare key
Subtracts weight of container
ZERO key
Sets display to Zero
BOTTOM
Battery compartment cover
(Batteries not included)
Battery compartment
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3.4 Assembling your weighing machine
The weighing machine is delivered in partly dismantled condition. Assemble
the individual components in the following sequence:
Place your machine on a level, stable, clean, dry surface to obtain
accurate readings.
Place the plastic platter on top of the scale, flat side facing up so
the platter sits firmly on the machine with the four “legs” inserted
into the corresponding four recepticals.
Place the stainless steel platter on top of the plastic platter with
the flat side facing up.
Unwrap and place the clear plastic bowl, open side facing up, on
top of the stainless platter.
3.5 Installing batteries / Connecting the AC adapter
Remove the battery compartment cover and insert six (6) AA batteries (not
included) into the battery compartment, taking extreme care that the polarities
(+ / -) are observed.
Insert the power adapter cable plug into the socket on the side of the
machine
NOTE: the AC input requirement could be 110, 120, 220, 230 or
240 Volts (50/60 Hz) depending on the area where used, so
please verify that the adapter is correct.
3.6 Choice of a suitable location
The environment in which your weighing machine is used is very important. Air
movement, temperature changes, vibrations, direct sunlight, etc. all influence
the performance of high precision weighing machines. Therefore, place your
weighing machine on a solid, sturdy surface that is free of air currents,
vibration and not in direct sunlight. The surface should not be magnetic and
should be located away from doors, windows, heaters, air conditioners and
fans.
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To summarize:
Put the weighing machine on a solid, firm and preferably vibration-
proof, horizontal base
Make sure that the weighing machine cannot be shaken or
knocked over
Protect from direct solar radiation
Avoid drafts and excessive temperature fluctuations
3.7 Checking the mains voltage
The following Safety recommendations must be observed when connecting
the balance to the mains:
The machine may only be operated with the power adapter supplied.
Check before connecting the power adapter to the mains supply, that the
operating voltage stated on the power adapter agrees with the local mains
voltage.
If the operating voltage is not the same as the mains voltage, the power
adapter must, on no account, be connected to the mains supply. Contact
customer service.
3.8 Calibrating the weighing machine
Since the Earth’s gravity is not the same everywhere, each balance must be
adjusted to compensate for the gravity differences at each location in
accordance with the underlying physical weighing principles. This adjustment
process, known as calibration must be carried out at initial installation and after
each subsequent relocation.
In order to ensure exact measurements, it is recommended that the balance
should be calibrated regularly using a known external calibration weight (see
Section 5 below), as with time and use, mechanical deviations may occur.
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LOW BATTERY indicator
WEIGHING UNIT
ZERO indicator
Indicates when the
scale zero is correct
4 Working with the application menu using the
Intelligent Key-Pad
4.1 Display and key functions
4.1.1 Display:
4.1.2 Key Functions:
1. The ON/OFF key is to turn the Scale On or Off
2. The UNIT key is to toggle between different weighing units.
3. The ZERO key sets the display to Zero: sets the display to Zero.
4. The TARE key is tosubtract the weight of a container
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4.2 Program options
Please see our web-site at http://www.lwmeasurements.com for practical
demonstrations of applicable usage.
4.2.1 Function settings
4.2.2.1 Enter the Function Setting Mode
Start with machine OFF
Press and Hold [ZERO]
While holding [ZERO] press [ON/OFF]
Press [ZERO] to toggle between A-on (Function setting mode on) and
A-off (Function setting mode off) Select A-on to continue in Function
Setting
4.2.2.2 Setting Backlight
While in Function Setting Mode,
Press [UNIT]. The display will show L – On (Backlight active) or L-Off
(Backlight active)
Press [ZERO] to toggle between L-On and L-Off
4.2.2.3 Selection of Auto Shut Off Mode
While in Function Setting Mode,
Press [UNIT]. The display will show A-On (Auto Shut off active) or
A-Off (Auto Shut off inactive)
Press [ZERO] to toggle between A-On and A-Off
4.2.2.4 Return to Weighing Mode
Press [ON/OFF] to turn the power off.
Press [ON/OFF] again to turn on the power and return the machine to
weighing mode
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4.2.3 Weighing
4.2.3.1 Before Weighing
Whenever possible, allow the machine to warm up for 10 minutes after first
turning on, to ensure the machine will function properly and accurately
4.2.3.2 Error Messages
Err-0: Overload which means you have placed more weight on the
machine then it is programmed to handle
Err-b: Low battery
4.2.3.3 Weighing Procedures
Press [ON/OFF] to turn scale on
Press [UNIT] to select a weighing unit (kg, g, lb, oz, lb:oz)
Once the unit has been selected, the selected unit will be displayed
next to the weight value
Start weighing!
o If you do NOT use a container (or the supplied bowl), verify
the reading is “0”
If the display does not show “0”, press [ZERO] to
display “0”
Place your item/s to be weighed on the platform
o If you DO use a container (or the supplied bowl):
Place an empty container (or the supplied bowl) on
the platform
Wait for the weighing value to stabilize
Press [ZERO] to display “0”
Place your item/s to be weighed in the container or
bowl
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5 Calibration - Using an External
Calibration Weight
Calibration may be required when the weighing machine is initially installed or
if the weighing machine is moved a substantial distance from the original
location. Thirty (30) minutes of warming up of the machine is always needed
before initial calibration.
Calibration procedure:
Before entering the Calibration Mode, press [ON / OFF] to power on
the scale for 1 minute.
Press [ON / OFF] to turn the power off.
Press and hold the [UNIT] key and at the same time press the [ON /
OFF] key. The display will show CALu=. The scale is now in
Calibration Mode.
Press the [UNIT] key to toggle between setting units (kg, g, lb, oz).
Press [ZERO] to initiate the calibration process.
Enter the weight of your calibration weight by using the [UNIT] key to
toggle between digits, and use the [TARE] key to increase each digit
until the display flashes your test weight amount.
Press the [ZERO] key. The display will now show CAL then AD value.
Press the [UNIT] key. The display will show the flashing calibration
weight.
Place your test weight on the platter. Wait for the Stable Indicator to
be displayed. Press the [UNIT] key. The display will return to the AD
value
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Take the calibration weight off the platter and press [ON / OFF] to turn
off the scale. The calibration is now complete
Press [ON / OFF] to turn the scale back on. The scale will now be in
Weighing Mode. Place the weight on the platter to ensure the scale is
weighing correctly. If not, turn the scale off and repeat the calibration
process again
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7 Transport, storage
7.1 Transportation and shipping of the weighing
machine
Your weighing machine is a precision instrument. Treat it carefully. Avoid
shaking, severe impacts and vibration during the transportation.
Take care that there are no marked temperature fluctuations during the
transportation and that the weighing machine does not become damp
(condensation).
7.2 Storage of the weighing machine
If you would like to take the weighing machine out of service for an extended
period, disconnect it from the electricity supply, clean it thoroughly (see
Section 6 .Maintenance and servicing.) and store it in a place which meets the
following conditions:
No violent shaking, no vibrations
Minimum temperature fluctuations
No direct solar radiation
Minimum moisture
Replace all batteries at the same time. Do not replace only a portion of the six
batteries as this may cause the a malfunction
If the weighing machine is not to be used for a long period of time, remove all
batteries from the battery compartment to avoid leakage, which may cause
damage.
The weighing machine should preferably be dispatched and transported in the
original packaging to avoid transportation damage.
The weighing machine should preferably be stored in the original packaging,
since this provides optimal protection for the weighing machine.
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