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Scale House GAI420 - User Manual

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310002M21
High-Precision Tuning Fork
Electronic Balance
GAI Series
(42062022004200)
Operation Manual
To ensure safe and proper use of the balance, please read
this manual carefully.
After reading this manual, store it in a safe place near the
balance, so you can review it as needed.
IMPORTANT

Questions and Answers

  • R
    Richard BowmanAug 16, 2025
    What to do if [o-Err] appears on my Scale House Scales before reaching capacity?
    • K
      kenttylerAug 16, 2025
      If the gross weight exceeds the balance's capacity (container + sample weight), an [o-Err] message will appear before the capacity is reached. Check the total weight. Also, this error can appear if a section of the mechanism is damaged, in this case you should contact our Technical Service Division or your local dealer.
  • A
    Adam LunaAug 19, 2025
    Why does the weight indication contain an error on my Scale House Scales?
    • V
      Victoria MayerSep 12, 2025
      Weight indication errors on Scale House Scales can occur for several reasons. First, review the tare subtraction procedure to ensure no mistakes were made. Second, check the level of the scales, making sure the adjusters are not lifted. Finally, if the indication values are inconsistent after long use or relocation, execute span adjustment on the balance.
  • H
    hamiltonshannonAug 22, 2025
    What does [u-Err] mean on Scale House Scales and how do I fix it?
    • B
      bonillamalloryAug 22, 2025
      If [u-Err] is displayed on your Scale House Scales, it could be due to a foreign object caught between the measuring pan (pan base) and the balance. Remove the measurement pan and examine the surface beneath it. Also, this error can appear if a section of the mechanism is damaged, in this case you should remove the measurement pan and examine the surface beneath it.
  • J
    Jeffrey MitchellAug 25, 2025
    Why is the display unstable on my Scale House Scales?
    • A
      Amanda CookAug 26, 2025
      If your Scale House Scales display is unstable with [M] flashing, it might be due to air currents or vibration affecting the balance. Check Precautions on Use. Also, make sure the balance is on a stable surface. Check Precautions on Use. Another cause could be an object contacting the sample, measuring pan, or tare. Check Precautions on Use.
  • D
    David HuynhAug 27, 2025
    How to fix the limit function when it is not working on Scale House Scales?
    • B
      Bryan McculloughAug 27, 2025
      If the limit function on your Scale House Scales isn't working, first check if the limit function is selected. Also, check if the limit value has been entered correctly.
  • R
    Robert CoxAug 30, 2025
    How to troubleshoot a Scale House Scales unit with no display indication?
    • S
      Sandra Hunter DVMAug 30, 2025
      If your Scale House Scales show no indication on the display, ensure the AC adapter is properly connected.
  • M
    melissa74Sep 2, 2025
    Why does my Scale House Scales have no indication during battery installation?
    • Z
      Zachary BrownSep 2, 2025
      During battery installation, if the indication disappears, flashes, or no indication is produced on your Scale House Scales, it may be due to the automatic power-off function being activated. Switch the power on again and deactivate the function if necessary. Also, the battery capacity might be low, so recharge the battery. If this doesn't work, operate the balance with the AC adapter.
  • B
    Barbara WigginsSep 4, 2025
    What to do if [Add] appears on my Scale House Scales?
    • H
      Henry FarrellSep 5, 2025
      If [Add] appears on your Scale House Scales with [ ] and a value flashing at [LO], it indicates potential errors in counting mode because the sample weight is insufficient. Execute the Memory Update Method.
  • F
    fsolisSep 7, 2025
    What does it mean when [b-Err] or [d-Err] appear on Scale House Scales?
    • G
      Gregory PinedaSep 7, 2025
      If [b-Err] or [d-Err] is displayed on your Scale House Scales, it's possible that the balance is exposed to static electricity or noise. In this case you should contact our Technical Service Division or your local dealer. Also, this error can appear if the electrical system of the balance is malfunctioning, in this case you should contact our Technical Service Division or your local dealer.
  • K
    Kathryn MendezSep 10, 2025
    Why do I get [o-Err], [1-Err], or [2-Err] during span adjustment (AJ-CE) on Scale House Scales?
    • N
      nicholas15Sep 10, 2025
      During span adjustment (AJ-CE), if [o-Err], [1-Err], or [2-Err] is displayed on your Scale House Scales, it could be due to using a weight heavier than the capacity. Check that the span adjustment procedure was performed correctly. It could also be that the reference weight is less than 50% of the capacity. Check that the span adjustment procedure was performed correctly. Another cause could be that calibration produced an error of 1.0% or more. Check that the span adjustment procedure was performed correctly.

Summary

Safety and Precautions

General Safety Guidelines

General warnings and advice for safe operation and to prevent injury or damage.

Symbol Meanings and Cautions

Explains cautionary symbols and provides specific hazard warnings.

Handling and Environmental Restrictions

Precautions for proper handling, environment, and avoiding hazards.

Operational Restrictions and Advice

Further usage limitations and best practices for optimal performance.

Balance Components and Controls

Basic Operations and Setup

Installation and Initial Setup

Step-by-step guide for installing and setting up the balance.

Advanced Functions and Features

Detailed Function Descriptions

Comprehensive explanation of each function, set values, and descriptions.

Calibration, Connectivity, and Battery

Balance Calibration Procedures

Step-by-step guide for calibrating the balance for accuracy.

Technical Information and Support

Troubleshooting Guide

Lists common problems, causes, and solutions for balance issues.

Scale House GAI420 Specifications

General IconGeneral
Capacity200 kg / 400 lb
MaterialStainless Steel
Communication InterfaceRS232
Accuracy±0.1 kg
Power SupplyRechargeable battery or AC adapter
DisplayLCD

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