1. GENERAL INFORMATION WLC/A1, WLC/A2 precision scales enable fast and accurate mass measurements under laboratory and industrial conditions. The devices are equipped with an internal battery which allows their operation in places where there is no access to the mains. The WLC series features a stainless steel weighing pan, and a backlit LCD guaranteeing clear weighing result presentation.
3. WARRANTY CONDITIONS A. RADWAG feels obliged to repair or exchange all elements that appear to be faulty by production or by construction. B. Defining defects of unclear origin and means of their elimination can only be realized with assistance of manufacturer and user representatives.
5. UNPACKING AND INSTALLATION • Unpack the device and place it on a flat and even surface. Keep it far away from any sources of heat. • Install the weighing pan, follow the below figures: WLC/A1 precision scale WLC/A2 precision scale 5.1.
3. Remove the hole plug. 4. Mount the hook and put the scale bottom side down. 6. START-UP AND OPERATION 6.1. Levelling To level the weighing instrument turn its feet. Keep turning the feet until the air bubble takes central position: 6.2.
Nominal voltage of the power supply (specified on the power supply data plate) has to be compatible with the mains nominal voltage. Procedure: • Connect the power supply to the mains. Plug it to the power supply socket (back side of the scale housing). •...
6.5. Battery Charge Status Check • Press keys combination. • Battery charge state, given in %, is displayed for 2 s. • Next, home screen is displayed automatically. 7. MAINTENANCE ACTIVITIES In order to ensure safety in the course of cleaning, it is necessary to disconnect the device from the mains.
At the end of the cleaning process rinse the pane using distilled water. Use soft brush with wooden or plastic handle exclusively in order to avoid risk of scratches. Do not use wire brush. Rinsing is a necessary cleaning process stage allowing to remove remaining soap, detergents and other cleansers from the panes prior their reinstallation.
8. OPERATION PANEL Operation panel of WLC/A2 precision scale Operation panel of WLC/A1/C/2, WLC/A2/C/2 precision scales 9. KEYS Press to switch the weighing device on/off – hold the key for about 1 second. Function key, press to change the working mode.
Press to tare the scale. Press to perform internal adjustment manually (WLC/A1/C/2, WLC/A2/C/2 scales). Upon pressing keys combination, functions of given keys change. Detailed information concerning use keys combination is to be found further down this manual. 10. PROGRAM STRUCTURE Program menu is divided into function groups.
10.2. Operating the Menu In order to navigate the program menu use the operation panel. Press to enter the main menu. Press to: • enter tare manually. • enter tare from tare database, • change value by 1 digit up, •...
11.1. Good Weighing Practice To assure long-term operation and correct mass measurements, follow the rules presented below: Load weighing steadily avoiding mechanical shocks. Place weighed loads centrally on the weighing pan (eccentricity errors are specified by EN 45501 standard, point 3.6.2.).
11.3. Taring To determine net weight value, load the weighing pan with a packaging, wait for a stable indication and press key. Zero indication and the following pictograms are displayed: Net and . The weighing device has been tared. Upon loading, net mass is displayed. Taring can be carried out repeatedly within the whole weighing range.
To return to weighing with accuracy of the I weighing range: • Take the load off the weighing pan. • As the indication returns to zero and when symbols displayed, press button. • II weighing range pictogram/marker gets blank, the scale returns to weighings with the accuracy of the I weighing range.
11.6.2. Temporary Unit Temporary unit runs from the moment it is set to the scale shut-down and restart. Procedure: • Enter <P9.Unit / 9.2.Unin> submenu. • Press key, available units are displayed successively one by one. Options in case when the main unit is [kg]: •...
Adjustment types: • external adjustment performed using an external weight of declared mass, i.e. mass that cannot be modified, • user adjustment performed using an external weight of mass of any value comprised within the weighing range, however not lower than 30% of the maximum capacity value.
12.2. User Adjustment option available for non-verified scales exclusively External adjustment must be carried out using an external adjustment weight , and of mass value ≥ 30% of the maximum capacity value. of class F Procedure: • Enter <P1.CAL / 1.2.CA-u> submenu, edit box for declaring weight mass is displayed (the mass value must be ≥...
12.4. Automatic Internal Adjustment Automatic internal adjustment is triggered: • after connection of the scale to the mains, • when temperature variation occurrs, • after passage of specified time interval. In case of an automatic internal adjustment it is necessary to declare condition that is to trigger the automatic adjustment.
Adjustment upon passage of specified time interval • The scale is equipped with RTC, due to this time of each completed process is registered. • Adjustment process is triggered automatically after passage of particular time interval, set in <1.6.CAC> parameter. •...
12.7. Adjustment Report Adjustment report, and adjustment test report are both automatically printed (using scale-connected printer) at the end of each adjustment process. To declare report content go to <P6.1.CrEP> submenu. For detailed information concerning report content read later sections of this manual. 13.
13.3. Ambient Conditions Parameter relating to ambient and environmental conditions of the workstation. Enter this parameter and set 'nStAb' value if the ambient conditions are unfavourable (air drafts, vibrations). Procedure: • Enter <P2.rEAd / 2.3.Enut> submenu. • Press key, parameter values are displayed successively one by one: nStAb –...
Regular tare mode. Select this parameter to make the scale overwrite the set (selected) tare value with the most recently entered one. Select this parameter to make the scale store the latest tare value tArF in memory. The latest tare value is displayed after scale restart. Automatic tare mode.
• Select respective entry and press key, tare value edit box is displayed. • Enter tare value, to do it press keys: Press to select digit that is to be edited. Press to set digit value, 0 - 9 . •...
Select to make the last digit on only when the weighing indication is stable. uuSt • Press key to confirm, next go to the home screen. 14. COMMUNICATION Communication between the scale and the peripheral devices is established via the following ports: RS232 (1), RS232 (2), USB type A, USB type B. To set the ports go to <...
COM port in a computer. To carry out this procedure, you need a respective driver installer which either downloaded from website or taken from a CD with manuals: RADWAG USB www.radwag.pl DRIVER x.x.x.exe. Procedure: 1. Run the driver installer and follow the commands. Select language version and press button „OK”...
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In order to start installation process press „Next” button. Connect scale a computer, use 1.8-meter long cable maximum (in case of already connected scale, necessary to disconnect it and reconnect using USB cable). Respective message box is displayed, press OK button for confirmation. Press „Finish”...
„COM ports Screen” automatically displays number of installed COM port. In this very case it is COM8. 2. Enter < P5.ducE / 5.1.PC / 5.1.1.Prt> submenu and set <USbb> value. 3. Run program for measurements readout. 4. Set communication parameters – select COM port that was installed in the course of drivers installation (in this very case it is COM8).
• Press key to confirm, next go to the home screen. 15.1.3. Printout Interval for Continuous Transmission Parameter enabling you to set frequency of printout for continuous transmission. Printout interval is set in seconds with 0.1 [s] accuracy within 0.1 [s] - 3600 [s] range.
15.3.1. Additional Display Port • Enter <5.3.AdSP / 5.3.1.Prt> submenu. • Press key, parameter values are displayed successively one by one: nonE – none; rS1 – RS232 (1); rS2 – RS232 (2). • Press key to confirm, next go to the home screen. 16.
Report example: 16.2. GLP Printout <P6.2.GLP> is a group of parameters allowing you to declare variables that are to be printed on a weighing printout. Each variable features accessibility attribute: YES – print, no – do not print. Variables list: Name Description 6.2.1.
17. MISCELLANEOUS PARAMETERS <P7.Othr> is a group of parameters enabling you to adapt the scale to individual needs. 17.1. Backlight Parameter allowing you to change display brightness, the brightness can be changed within 0% - 100% range. Procedure: • Enter <P7.Othr / 7.1.bLbt> submenu. •...
Shutdown function is inactive and the device cannot be turned off if any process is started or if you operate the menu. Procedure: • Enter <P7.Othr / 7.3.t1> submenu. • Press key, parameter values are displayed successively one by one: nonE –...
• Press key to confirm. The process of restoring default settings starts, this is signalled with display of 'dash', < - >. • Upon process completion <7.8.dFLu> submenu is displayed. Go to home screen. 18. SCALE DATA Scale data menu, <P8.InFo>, provides information on the weighing device and its program.
19.2. Working Modes Local Settings Each working mode features specific (local) functions which enable adapting device operation to individual needs. The functions are to be found in local settings. To go to local settings of each working mode enter <P3.Func> submenu.
• Press key, parameter values are displayed successively one by one: Manual printout of stable weighing result. Upon pressing key at the moment when the result is unstable (no pictogram displayed), the StAb program first waits for the stability condition to be met, only then printout is carried out.
20. WORKING MODE – WEIGHING <UUGG> is a standard working mode enabling you to carry out the weighing operation along with record of the result to the database. 20.1. Local Settings To go to local settings enter <3.1.UUGG> submenu. Working mode accessibility For detailed description read section 19.2.1.
Select to set sample mass by determining mass of a single part. Select to set sample mass by entering mass of a single part. • Enter respective value and press key to confirm, then continue weighing. 21.2. Setting Sample Mass by Entering Mass of a Single Part •...
• Load the weighing pan with declared amount of parts. When the indication is stable ( pictogram is displayed), press key to confirm the mass. • Single part mass is calculated automatically, next quantity of parts (pcs) is displayed. Total weight value of all parts loaded onto the weighing pan cannot be greater than the max capacity value.
Load mass lower than low weighing threshold. Load mass within weighing thresholds. Load mass greater than high weighing threshold. If the entered low threshold value (Min) is greater than high threshold value (Max), <Err Lo> error is displayed. If the entered high threshold value (Max) is greater than the maximum capacity value, <Err Hi>...
• Set respective value and press key to confirm, next go to the home screen. 23.2. Reference Sample Mass Determined by Weighing • Enter <3.4.dEu / 3.4.2.UUt> submenu, set < > value. • Enter <dEu> working mode (Percent weighing), first, text <LoAd> is displayed for 1 second, then the weighing window.
24.2. Peak Hold Operation • Enter <3.5.toP / 3.5.2.Lo> submenu, set <Lo> parameter value (Lo threshold) after exceeding of which maximum force is to be registered. • Enter <toP> working mode (Peak Hold). From now on the scale registers and holds every single weighing which is above the Lo threshold, and which is higher than the result of the previous peak hold.
• Unload the weighing pan, ZERO is displayed, „▲” marker starts blinking again. • Load the weighing pan with the ingredient no.2, wait for a stable weighing result and press key. • Total mass value of ingredient no. 1 and 2 is displayed, now the „▲” pictogram is displayed continuously.
26.1. Local Settings To go to local settings enter <3.7.AnLS> submenu. Working mode For detailed description read section 19.2.1. 3.7.1.Acc accessibility Enter this parameter to declare duration of the process in seconds (5s, 10s, 20s, 30s, 40s, 50s, Averaging time 60s) - on the basis of indications recorded within 3.7.2.Aut the set time interval the scale calculates the...
28.2. Inputs Setup • Enter <IO / In> submenu and edit given input. • Press key, available values are displayed successively one by one: Input inactive. Change unit. Zero. Tare. Print. Internal adjustment (function enabled in WLC/A1/C/2, WLC/A2/C/2 scales exclusively).
• Press key to confirm, next go to the home screen. By default all inputs' functions are set to <no> value. 28.3. Outputs Setup • Enter <IO / Out> submenu and edit given output. • Press key, available values are displayed successively one by one: Output inactive.
30. TROUBLESHOOTING Problem Cause Solution Connect the scale to the mains, Battery discharged. charge the battery (batteries). The scale does not switch batteries (batteries Check if batteries are installed installed or installed incorrectly). correctly (polarization). <7.3.t1> parameter set to value The scale switches off Go to 'Othr' menu, set <7.3.t1>...
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