How to set the vacuum suction force of the abrasion tester

The abrasion tester is equipped with a device to control the suction power of the vacuum cleaner, which can be adjusted from 50 to 100% according to the test requirements. The suction level is adjusted by adjusting the number of revolutions of the vacuum cleaner motor in order to meet the vacuum suction requirements during the test.

The vacuum level is set to ensure sufficient suction power to pick up abraded sample chips, but not soft samples. The instrument is set to 100% vacuum suction, if you need less than 100% suction, you will need to follow the steps below to adjust it. The vacuum system suction level defaults to the last set value.

1. Press the MENU key to display the menu (see the illustration below)
2. According to the menu, select "4" Vacuum
3. Enter a value between 50 and 100, then press ENTER to save.

The vacuum level should be set to ensure sufficient suction to pick up abraded sample chips, but not soft samples. The instrument is set to 100% vacuum suction, if you need less than 100% suction, you will need to follow the steps below to adjust it. The vacuum system suction level defaults to the last set value.

Note:

1. Do not use the vacuum cleaner on wet sample surfaces. When testing wet samples, lift the vacuum nozzle and disconnect the power cord.
2. Do not place the vacuum cleaner in a closed room with insufficient ventilation. If there is not enough air, the vacuum cleaner may overheat and cause damage to the vacuum cleaner.

Using the vacuum cleaner only

The VACUUM ONLY button allows you to use the vacuum cleaner only without the wear meter. Use this feature for cleaning the drive shaft and sample holder, or the abrasive wheel grinder.

If only the vacuum cleaner is needed, first turn on the abrasive gauge and then press VACUUM ONLY. The vacuum cleaner will start working according to the last entered suction power value.

The vacuum nozzle can be raised or lowered by adjusting the knob on the right side of the Abrator. The adjustment knob can be raised or lowered by 1.27 mm (0.05") with one rotation of the knob and a certain distance between the sample and the nozzle is required for many test methods to assist the vacuum. For soft samples, a minimum distance of 6.35 mm (0.25 in) between the nozzle and the sample is required. For harder samples, the nozzle is usually 1.60mm (0.0625") to 3.20mm (0.125") away from the sample.

The suction level of the vacuum cleaner can be adjusted depending on the type of sample being tested and the height of the nozzle from the sample. The purpose of using the vacuum cleaner is to cleanly grind down the sample particles, not to pick up the sample under test.

Note: When testing soft samples, make sure that the sample is not picked up by the vacuum nozzle. Any contact between the sample and the vacuum during the test will cause additional loss of sample and will affect the test results.

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