Before operating an electronic universal testing machine, it’s essential to follow proper precautions and procedures to ensure both safety and accurate results. Here's how you can prepare:
1) First, gather the necessary specimen holders based on your requirements. Make sure the tensioner clutch, speed control handwheel, and any relevant safety switches are all properly set.
2) Estimate the maximum load required for the test and choose the appropriate measuring force plate. Select the right cherry hammer and align the pendulum vertically. Ensure the pointer is set to zero.
3) Secure the sample in place. If the distance between the clamps isn't ideal, activate the movable table to the correct position, then stop and clamp the sample securely. For tensile tests, lock the upper and lower jaws.
4) Adjust the setup of the drawing system along with the pen and paper. Make sure everything is aligned and ready to record data accurately.
5) Begin the official experiment by loading the machine:
- For manual loading: Place the clutch handle in "manual" mode and manually crank the handle to apply the load.
- For electric loading: Switch the clutch handle to "slow" and start the motor. Use the speed control handwheel to adjust the loading speed if needed.
6) Once the experiment is complete, stop the machine immediately, remove the test piece, and reset all components to their initial positions.
7) Additional Notes:
- To ensure the clutch gears engage smoothly, adjust the shift lever handle to the "manual" position and manually rotate the handle.
- While the motor is running, use the conditioning handwheel to regulate the electric loading speed.
- To change the motor's direction, stop the machine completely before reversing it.
- During operation, the operator must remain present at all times. Do not touch the pendulum while the machine is running. If anything seems unusual or if a malfunction occurs, stop the machine immediately.
- The small motor is only meant for quick adjustments of the movable table. It should never be used for loading or unloading.
By following these steps, you'll be able to operate the electronic universal testing machine safely and effectively. Always double-check each step to avoid errors and ensure the integrity of your test results.
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