Before using an electronic universal testing machine, there are several important precautions and operational steps to ensure safety and accuracy during testing. Here's how you can prepare:
1) Select the appropriate specimen holder based on the requirements. Ensure that the tensioning clutch, speed control handwheel, and all relevant safety switches are correctly positioned.
2) Estimate the maximum load expected during the test. Choose the appropriate measuring force plate and attach the corresponding hammer. Make sure the pendulum is vertically aligned and set the pointer to zero.
3) Securely install the sample. If the distance between the clamps is not optimal, activate the movable table to the proper position. Stop the machine before clamping the sample securely. For tensile tests, lock the upper and lower jaws.
4) Adjust the setup of the drawing system, including the pen and paper. This step ensures accurate recording of data throughout the experiment.
5) Begin the official loading process:
- Manual Loading: Move the clutch lever to the "manual" position and manually crank the handle to apply the load.
- Electric Loading: Place the clutch lever in the "slow" position and start the motor. Use the speed control handwheel to adjust the loading speed if necessary.
6) Once the test is complete, stop the machine immediately. Remove the sample and reset all components to their initial positions.
7) Important Notes:
- To ensure the gears of the clutch engage properly, adjust the shift lever to the "manual" position and rotate the handle forcefully.
- While the motor is running, use the conditioning handwheel to adjust the speed for electric loading.
- To reverse the motor’s direction, stop the machine completely before switching directions.
- During operation, the operator must remain present at all times. Avoid touching the pendulum unless absolutely necessary. Any abnormalities or malfunctions should result in an immediate shutdown.
- The small motor is intended solely for quick adjustments of the movable table. It must never be used for loading or unloading samples.
By following these detailed instructions, you can operate the electronic universal testing machine safely and effectively. Always prioritize safety and precision to achieve reliable results.
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