Calibrating the Loadrite LR 915: A Step-by-Step Guide

[MikePhua]

Introduction to Loadrite LR 915
The Loadrite LR 915 is a popular onboard weighing system used on heavy equipment, primarily for loaders, to measure the weight of materials being loaded or moved. It provides accurate load data, helping operators optimize loading, reduce overloads, and ensure proper material handling. However, like all weighing systems, the LR 915 requires calibration to maintain accuracy over time. In this guide, we’ll walk you through the necessary steps and considerations for calibrating the Loadrite LR 915.
Common Calibration Issues

1. Inaccurate Weighing
   Over time, the system may start to show discrepancies in weight measurements due to changes in the machine’s condition or wear of key components like load cells or sensors. If the system is not properly calibrated, operators might face difficulties in determining the exact weight of materials, leading to inefficiency and potential overloading.
   
2. Sensor Malfunctions
   Faulty or improperly installed sensors can affect the accuracy of the system. Calibration helps reset the sensors and ensures they work together in harmony to provide reliable readings.
   
3. Environmental Factors
   Harsh weather conditions, such as extreme temperatures, or dirt and debris accumulation, can affect the performance of the sensors and the calibration process. Ensuring the machine is clean and in optimal working conditions is essential for accurate calibration.
   

Steps to Calibrate the Loadrite LR 915

1. Pre-Calibration Preparation
   Before you begin the calibration process, ensure the following:
   • The equipment is on stable ground.
     
   • The machine’s bucket is empty and free of debris.
     
   • All sensors and load cells are clean and properly connected.
     
   • The system is powered on and functioning correctly.
     
2. Accessing Calibration Mode
   To begin calibration, you will need to access the Loadrite LR 915’s calibration mode. This is usually done through the system’s main display screen or control panel. Consult your user manual for specific instructions on how to enter calibration mode.
   
3. Zero Calibration
   The first step in the process is to perform a zero calibration. This ensures the system accurately measures the weight of materials when the bucket is empty. To do this:
   • Ensure the bucket is empty.
     
   • Follow the on-screen prompts to calibrate the system to zero.
     
   • This will remove any potential offsets that might exist in the sensors.
     
4. Load Calibration
   The next step is load calibration, which is done by loading a known weight (usually a certified weight or a material of known weight) into the bucket. The system uses this known weight to adjust and calibrate its sensors. Here’s how to perform the load calibration:
   • Load the bucket with a known weight.
     
   • Ensure the machine is stationary and the load is evenly distributed in the bucket.
     
   • Follow the prompts on the Loadrite display to enter the weight.
     
   • The system will automatically adjust its settings based on the known weight.
     
5. Test the Calibration
   After calibration, it’s essential to test the system’s accuracy. Load a similar weight (either the same material or a different load of known weight) and compare the weight displayed on the Loadrite system with the actual weight.
   • If the reading is consistent with the known weight, the calibration is successful.
     
   • If discrepancies are observed, you may need to repeat the calibration process, or check for any faults in the sensors or system.
     
6. Repeat the Process
   To ensure the system is fully calibrated, you may need to repeat the load calibration process multiple times, using different known weights to ensure consistency and accuracy across the range of materials being loaded.
   

Common Troubleshooting Tips

1. Inconsistent Readings
   If the Loadrite system provides inconsistent readings even after calibration, it might be an indication of sensor issues or mechanical problems with the equipment. Inspect the load cells, wiring, and connections, and clean any dirt or debris that may be affecting the system.
   
2. Software/Hardware Reset
   If the calibration process doesn’t seem to work, try resetting the system to its default settings. This can often resolve software-related issues that might be affecting the calibration process.
   
3. Load Cell Inspection
   If you suspect issues with the load cells, inspect them for physical damage or wear. Replacing faulty load cells may be necessary to maintain proper calibration.
   
4. Consulting the User Manual
   If you encounter any issues during the calibration process that you cannot resolve, refer to the user manual for additional troubleshooting steps, or contact Loadrite support for assistance.
   

Maintaining Accuracy Over Time
Once calibrated, the Loadrite LR 915 should provide reliable measurements, but regular maintenance and recalibration are essential for long-term accuracy. Here are a few tips to keep the system in top shape:

• Regular Inspections: Periodically inspect the sensors and wiring for any signs of wear, damage, or corrosion.
  
• Cleaning: Keep the sensors and load cells free from dirt, debris, and moisture, which can interfere with accurate readings.
  
• Recalibration: Perform recalibration periodically or whenever you notice a drop in measurement accuracy, particularly if the machine has been used extensively or exposed to harsh conditions.
  

Conclusion
Calibrating the Loadrite LR 915 system is essential for maintaining accurate weight measurements and optimizing the performance of your machine. By following the outlined steps and performing regular maintenance and recalibrations, you can ensure that your machine operates efficiently and safely, helping you make the most of your equipment.