Mixers should be set at a flat position, with square wooden paving around the axle, so that the tire put high overhead, avoid walking occurs when starting.

Mixers secondary leakage protection should be implemented after the power is turned before work, it must be carefully examined by the turn that the empty test qualified before use. Commissioning tests should be mixed with drum speed is appropriate, under normal circumstances, the proportion of empty vehicle speed (after charging) slightly faster 2 to 3 revolutions, such as a difference of more, should be adjusted to move the wheel and drive wheel ratio.