Professional Weighing Equipment Wheelchair Scale Operating Manual LWC 800
Declaration of Conformity Declaration of conformity for apparatus with CE mark: We hereby declare that the product to which this declaration refers conforms to the following standards.
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://www.lwmeasurements.
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.
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 Data and parameters 2.3.1 Technical data 2.3.2 RS232 Data Interface 3 Getting started with your weighing machine 3.1 3.2 3.3 3.4 3.5 3.
4 Working with the application menu using the intelligent keypad 4.1 Display messages and key functions 4.1.1 Display messages 4.1.2 Key functions 4.2 Program options 4.2.1 Interface setting 4.2.2 Function settings 4.2.2.1 Setting auto shut-off 4.2.2.2 Setting backlight 4.2.2.3 Setting power on mode 4.2.3 Working mode setting 4.2.4 Hold function 4.2.5 Reading the display 5 Calibration using an external calibration weight 6 Maintenance and service 7 Transport and storage 7.
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.
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.
Figure 2.2 Indicator Figure 2.
Figure 2.4 4 screws with butterfly nuts Figure 2.
2.1.2 Functions of the weighing machine The Large Wheelchair Scale is a high-quality electronic precision weighing machine with the following specifications Metric Specifications Model number Capacity Graduation Platter Size LWC 800 400 kg 0.1kg 96.01 x 100.08 cm Shipping weight 40.82 kg Package 132.08 x 114.3 x 12.7 cm (Standard carton) 5 – 35 Cº Operating Temp.
FEATURES Display options: 5 digital LCD Power : AC adapter 9V / 100mA Auto back light (selectable) Auto shut off (selectable) Operating temperature: 5-35 ºC Operating humidity: 25% - 95% RH Zero Range (0 to 4% of full capacity) Tare Range (4% to full capacity Two calibration weight units: kg, lb Open calibration capacity Power on zero-setting range: +10% Two modes: Normal mode / Setting mode RS232 function 2.2 Application, conformity 2.2.
2.3 Data and parameters 2.3.1 Technical data The following applies to the LWC series Power supply: Input: 120 V or 230V AC (+/-15-20%); 60Hz Output: 9V DC 100mA Allowable ambient conditions: Temperature: 5°C - 35°C, 41°F - 95°F Relative humidity: 25% - 95%, non-condensing 2.3.
Transmission Information Format： 20 Byte ，blank=20H 1~2 3 4~13 14~18 19 20 ‘W: ’ P DATA UNIT CR LF W: Start of Data Transmission=57H+3AH P: Polarity ‘+’ = 2BH = Positive ‘-’ = 2DH =Negative DATA: 12.345’’=20H+20H+20H+20H+31H+32H+2EH+33H+34H+35H UNIT: ‘lb’ =6CH+62H+20H+20H+20H ‘kg’ =6BH+67H+20H+20H+20H CR: = 0DH LF: = 0AH If you have any questions on the technical data or require detailed technical information on your balance, please contact your technical representative.
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.).
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 3.4 Choice of a suitable location The environment in which your weighing machine is used is very important. Air movement, temperature changes, water and humidity, vibrations, direct sunlight, etc. all influence the performance of high precision weighing machines.
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 your sales representative. 3.6 When to calibrate the weighing machine Calibration is done in the factory. Don’t re-calibrate the machine unless it is not accurate. If you do need to calibrate the machine, refer to Section 5 – Calibration. 4 Working with the application menus using the Key-Pad 4.1 Display messages and key functions 4.1.
4.1.2 Key Functions: 1. The ON/OFF key is to turn the Scale On or Off 2. The HOLD key is to store the weight value. 3. The UNIT key is to toggle different weighing units. 4. The ZERO key: Zero feature if load weight below 4% of full capacity; TARE feature if load weight between 4% to 100% of capacity. 5. The PRINT key is to send data to external device through RS232 connector. 4.2 Program options Please see our web-site at http://www.lwmeasurements.
Press ON/OFF key to turn off the Scale. 4.2.2.Function Settings 4.2.2.1 Setting Auto Shut off Press and hold the HOLD key, then press ON/OFF key to turn on the Scale, display will show “A ON” or “A OFF”, Press ZERO key to select Auto shut off mode “ON” or “OFF”. 4.2.2.
- Press HOLD key again, display will show Ani. Fd, press UNIT key to enter, press ZERO key to select filter range between 0.5, 3, 5 and 10, press HOLD key to confirm. *** This is the filter range, 0.5d, 3d, 5d or 10d that the scale displays, for example, if we use LWC 800lb x 0.2lb for weighing a 300lb person, if we set it to be 0.5d, then the scale will show 299.8lb, 300lb, 300.2lb..., if we set it to be 3d, then the scale will show 299.4lb, 300lb, 300.6lb... 0.
3 + _ 2 : W 1 3 + 2 : 5 6 7 8 4 5 6 7 8 . 9 10 11 12 13 14 15 16 17 18 19 20 CR LF 5 0 0 k g Unit formation CR LF 9 10 11 12 13 14 15 16 17 18 19 20 Weight information 4 weight information Exampla: 50kg W/M 1 := M= overload mode W= normal weighing mode 4.2.
5 Calibration - Using a Calibration Weight Again, Calibration is done in the factory. Don’t re-calibrate the machine unless it is not accurate. Thirty (30) minutes of warming up of the machine is always needed before calibration. A reminder when operating our larger capacity scales: The scales of the LWC series are calibrated at the factory. Usually no recalibration is necessary unless major inaccuracies are observed.
Turn off the scale, remove the test weight from the platform. Press ON/OFF key to turn the scale on to test if the weighing is accurate, if not, repeat above steps. 6 Maintenance and service The weighing machine must be treated carefully and cleaned regularly. It is a precision instrument. For maintenance-work, the balance must be separated from the power supply (remove power adapter plug from socket).
Never use solvents, acids, alkalis, paint thinners, scouring powders or other aggressive or corrosive chemicals for cleaning, since these substances attack the surfaces of the scale housing and can cause damage. 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.
