Brecknell 405-6-LCD User manual

Model 405-LCD
Weigh Scale
User Manual
AWT35-100061
Issue AB

Model 405-LCD.book
Brecknell is part of Avery Weigh-Tronix. Avery Weigh-Tronix is a trademark of the Illinois Tool Works group of companies whose ultimate
parent company is Illinois Tool Works Inc (“Illinois Tool Works”). Copyright © 2021 Illinois Tool Works. All rights reserved.
No part of this publication may be reproduced by making a facsimile copy, by the making of a copy in three dimensions of a two-dimensional
work and the making of a copy in two dimensions of a three-dimensional work, stored in any medium by electronic means, or transmitted in
any form or by any means, including electronic, mechanical, broadcasting, recording or otherwise without the prior written consent of the
copyright owner, under license, or as permitted by law.
This publication was correct at the time of going to print, however Avery Weigh-Tronix reserves the right to alter without notice the
specification, design, price or conditions of supply of any product or service at any time.

Model 405-LCD 3
Table of Contents
Chapter 1 Introduction .............................................................................................................................. 5
General and Safety Information ......................................................................................... 5
Specifications ..................................................................................................................... 5
Unpacking and Setup ......................................................................................................... 6
Contents ............................................................................................................................. 6
Chapter 2 Overview of Controls and Functions ..................................................................................... 7
Front Display ...................................................................................................................... 7
Indicator Display Character Definitions .............................................................................. 7
Key Functions .................................................................................................................... 9
Chapter 3 Operations .............................................................................................................................. 11
Power on / Power off scale .............................................................................................. 11
Zeroing the display ........................................................................................................... 11
Normal Weighing Mode ................................................................................................... 11
Taring ............................................................................................................................... 12
Switching Measuring unit ................................................................................................. 12
Calibration ........................................................................................................................ 12
AUTO-OFF setting and BACKLIGHT setting function ...................................................... 12
Display symbol meaning ................................................................................................... 12
Troubleshooting ............................................................................................................... 12

4 Model 405-LCD

4 Model 405-LCD
Manual revision history
Current
Issue Date Created Details of Changes
AA June 2021 First draft created
AB Dec 2021 Modified section 3

Model 405-LCD 5
1 Introduction
1.1 General and Safety Information
lThe Model 405-LCD is for use in dry environments only.
lThis product uses 4x AA batteries. Dispose of according to local laws and
regulations.
lFor best performance, allow sufficient warm-up time before use.
lAvoid extended exposure to extreme heat or cold. Optimum operation is at
normal room temperature. See operating temperature range in the
specifications table. Allow the scale to acclimate to room temperature before
using.
lElectronic scales are precision instruments. Do not operate near cell
phones, radios, computers, or other electronic devices that emit radio
frequencies that may cause unstable readings.
The following information is crucial for user safety and general maintenance.

6 Model 405-LCD
Specifications
1.2 Unpacking and Setup
Follow the following steps for unpacking and setup:
1. Remove the scale from the box and place it on a firm, level surface. Avoid
locations with rapid temperature changes, excessive dust, moisture, air
currents, vibrations, electromagnetic fields, heat, or direct sunlight.
Model 405-LCD-06 405-LCD-15
Max. Capacity 6 kg (12 lb) 15 kg (30 lb)
2 g (0.005 lb)
1:7500
40 g (0.1 lb)
Readability 1 g (0.002 lb)
Display Resolution 1:6000
Min. Recommended Weight 20 g (0.1 lb)
Construction Food grade
304 stainless
steel pan,
ABS plastic
housing
Weighing Units kg / lb / g / oz /
lb:oz
Calibration unit kg / lb
Modes Weighing
Weight Display 1 backlit LCD display, 17.5mm (0.68”) high, 5 1/2 digits, 7-
segment
Zero Range Power-on zero range:
calibration zero
point±20%FS; ZERO key
range: power-on zero±5%FS
Tare Range Up to 100%FS
Stabilization Time <3 seconds
Operating Temperature 5° to 35°C
(41°F to 95°F)
Humidity Range <90% relative humidity, non-
condensing
Power Supply 4*AA batteries or AC power adapter (9Vdc/600mA with
central positive)
Safe Overload Capacity 150% of
capacity
Platter Dimensions (L x W) 215 x 245 mm;
9.65" x 8.46"
Scale Dimensions (L x W x H) 255 x 308 x 110 mm; 10.04" x 12.13" x
4.33"

Model 405-LCD 7
2. Adjust the leveling feet until the bubble is centered in the circle of the level
indicator (located on the front panel). 
Figure 1.1 Level indicator orientation
3. For battery power usage, install 4 AA batteries (not included) into the battery
compartment found on the underside of the scale. Batteries will allow up to 70
hours continuous usage without back-light.
4. Connect the supplied AC adapter to the power input found on the underside of
the scale. Plug the AC adapter into a properly grounded power outlet.
1.3 Contents
The following items are included with the Model 405-LCD scale:
lScale
l9Vdc/600mA adapter (supplied)
l4 x AA batteries (not supplied)
NOTE: For best results, ensure that the scale is level before use.

Model 405-LCD 7
2 Overview of Controls and Functions
2.1 Front Display

8 Model 405-LCD
2.2 Indicator Display Character Definitions

Model 405-LCD 9
2.3 Key Functions
Button
Functions
Short Press: (when off)
(when on)Long Press:
(when on)
Power on the scale
Sets display to zero
Power off the scale
Short Press:
Long Press:
Tare a weight
Switch between unit of measure

Model 405-LCD 11
3 Operations
3.1 Power on/Power off scale
1. Place the scale on a flat, stable surface. Level the scale using the leveling
bubble.
2. With the weighing platter empty, press the ON/OFF/ZERO key to power the
scale on. The scale will run a display check before showing the software version
“V08,” followed by the full capacity of the scale. After this, the scale will
automatically Zero, ready for use.
3. To power off the scale, press and hold the ON/OFF/ZERO key.
3.2 Changing Units of Measure
In normal weighing mode, press and hold the TARE/UNIT key to switch the measuring
units between lb, kg, g, oz, lb:oz.
3.3 Zeroing the Display
You can press the ON/OFF/ZERO key at any time to re-zero the scale.
The ZERO key is used to zero off any weight readings shown on the weight display
window. The ZERO key can only zero off weight that is within a +/- 5% of full scale’s
capacity.
Zeroing can only take place if the display reading is stable. If the weight is over or under
zero range, the scale will automatically display “0------” or “0____” for 2 seconds.
3.4 Normal Weighing Mode
When scale is powered on and displaying 0.000, place the object to be weighed on the
platform. The display will show the weight and units of weight being used.
3.5 Taring
The tare can be used in several ways. This includes removing the weight of a container
so only the weight of the ingredient inside the containers is displayed to ingredients
recipe control.
NOTE: The scale will only Zero in if the weight on the sale is within +/- 20% of the
calibration zero point. If the scale does not zero on start up, the scale may need to be
recalibrated.

12 Model 405-LCD
The scale weight is tared off between each ingredient to give the operator full viability
of the weigh of each ingredient added.
1. Zero the scale by pressing the ON/OFF/ZERO key.
2. Place an empty container on the scale and press the TARE/UNIT key. The
scale’s display will now show a Net Zero reading and the NET annunciator will
now be displayed.
3. Place the product to be weighed inside the container on the scale.The scale
will display just the weight of the product only and not the weight of the
container.
To remove a Tare, first remove the container from the scale and then press the ON/
OFF/ZERO key. The display will zero and the NET annunciator will turn off. The Zero
Annunciator will then be displayed on.
3.6 Calibration
Before calibration can start, make sure you have the correct calibrated weights to
calibrate the scale and that the scale is on a flat level surface. To calibrate the scale,
you will need the full scale capacity in weights 6kg or 12lb and 15kg or 30lb.
1. With the scale off and with no load on the scale and in the off position, press
and hold down the TARE/UNIT button and the ON/OFF/ZERO button at the
same time until CAL-0 appears on the display. Release the two buttons.
2. With no weight on the scale, press ON/OFF/ZERO key until “0 in CAL-0” is
flashing.
3. When CAL-F is displayed, press and hold the TARE/UNIT key to choose the
calibration units of measure (kg or lb). Now load the full capacity of weight onto
the platter and press the ON/OFF/ZERO key. The letter F in CAL-F will start to
flash.
4. When CAL-0 appears again, remove the weight from the platter and press the
ON/OFF/ZERO key. 0 in CAL-0 will flash.
5. If the calibration was successful, the scale will automatically return to normal
weighing mode. If CAL-Er is displayed, there is an error in calibration and the
scale needs to be re-calibrated.
6. To exit calibration mode, press and hold the ON/OFF/ZERO key.
3.7 AUTO-OFF and BACKLIGHT settings
Auto-Off Setting
If the scale has no movement or key presses in this period of time, the scale will
automatically turn off to save battery life.
NOTE: TARE range for this scale is up to 100% full scale capacity.

Model 405-LCD 13
To change this setting, complete the following steps:
1. When the scale is on, press and hold the TARE/UNIT and ON/OFF/ZERO keys
until “SETUP” is displayed, followed by “A.oFF.1.”
lA.oFF.1 = The scale will automatically turn off after 1 minutes of inactivity.
lA.oFF.2 = The scale will automatically turn off after 2 minutes of inactivity.
lA.oFF.3 = The scale will automatically turn off after 3 minutes of inactivity.
lA.oFF.4 = The scale will automatically turn off after 4 minutes of inactivity.
lA.oFF.5 = The scale will automatically turn off after 5 minutes of inactivity.
lA.oFF.6 = The scale will automatically turn off after 6 minutes of inactivity.
lA.oFF.7 = The scale will automatically turn off after 7 minutes of inactivity.
lA.oFF.8 = The scale will automatically turn off after 8 minutes of inactivity.
lA.oFF.9 = The scale will automatically turn off after 9 minutes of inactivity.
lA.oFF.0 = The scale will remain on until the on/zero off key is presses.
2. To change auto-off timer, press the TARE/UNIT key to select the auto-off time
then press the ON/OFF/ZERO key to confirm and save the setting.
3. Press the ON/OFF/ZERO key again to return to weighing mode.
Back-light Setting
The back light has 3 settings, with the default being set to "BLt.2."
l“BLt. 0”: Back light is alway off
l“BLt.1”: Back light is always on
l“BLt.2”: Back light is on for 10 seconds if there is weight monument or a key
is pressed
1. To change this setting with the scale on, press and hold the TARE/UNIT and
ON/OFF/ZERO key until “SETUP” is displayed, followed by “A.oFF.1.”
2. Press ON/OFF/ZERO keys until "BLt.2" is displayed.
3. Press TARE/UNIT key to select back light setting needed and press ON/OFF/
ZERO key to save setting and return back to weighing mode.
3.8 Display symbol
l0------: Power-on zero-point is over (calibration zero-point) +20% full scale
capacity) when scale is turned on, or the reading weight is over (power-on
zero-point) +5%FS when pressing ZERO key
l0_ _ _ _ _ _: Power-on zero-point is below (calibration zero-point) -20% full
scale capacity) when scale is turned on, or the reading weight is + (power-on
zero-point) -5%FS when pressing ZERO key
l-------: The current weight is over 100% full scale capacity+9d
lCAL-0: Zero point at calibration
lCAL-F: Full capacity at calibration
lCAL-Er: Calibration error

14 Model 405-LCD
lEEP. Er: EEPROM accessing error or data in EEPROM is not in its normal
range
lLo.bAt: The voltage of internal function is below 5.7V(+0.1V)
3.9 Troubleshooting
SYMPTOM PROBABLE CAUSE REMEDY
Will not power on
Power cord not plugged in or properly
connected. Power outlet not supplying electricity.
Battery is low. Other failure.
Check power cord connections. Make sure
power cord is plugged into the power outlet.
Check power source. Replace batteries.
Unable to zero the
display or will not
zero when turned on
Load on scale exceeds allowable limits.
Load on scale is not stable.
Load cell damage.
Remove load on scale.
Wait for load to become stable.
Lo.bAt is shown Battery is low. Replace batteries.

Brecknell
1000 Armstrong Dr., Fairmont, MN 56031
Toll free: 800-637-0529, Tel: [phone]
Fax: [phone]
Email: [e-mail]
www.brecknellscales.com
Brecknell
Foundry Lane
Smethwick, West Midlands B66 2LP
Tel: [phone]
Fax: [phone]
Email: [e-mail]
www.brecknellscales.co.uk