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1. The instrument shall be installed on a flat and firm concrete foundation. Fix with foot screws or with expansion screws. 2. After the power supply is turned on, check whether the rotation direction of the drum is consistent with the indicated arrow direction with inching method (when the preset revolution is 1). 3. After setting a certain revolution, start the machine to check whether it can stop automatically according to the preset number. 4. After the inspection, according to the test method of JTG e42-2005 T0317 of highway engineering aggregate test regulations, put steel balls and stone materials into the cylinder of the grinding machine, cover the cylinder well, preset the turning revolution, start the test, and automatically stop the machine when the specified revolution is reached.
