The rotation of the cams alternately in one direction and the other. Pressing the button for changing the direction of rotation acts only for one cycle (approximately one minute), but I would like for the entire time of operation (20 minutes). Changing the rotation speed with the button is almost not noticeable. A significant slowdown in rotation is felt if you press on the body (give a load to the cams). Power supply 2 amps. There are no changes on the 3 amp.
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