If the industry finds that there is no suction or the suction is too small, it may be caused by the following two conditions:

1 The machine has air leakage, resulting in reduced suction or no suction.

2 Inconsistent sequence of three fire lines causes the motor to reverse. (Because the order of the fire lines in each factory power socket is inconsistent, it is very likely that the order of the fire lines in the plug will not be the same when the vacuum cleaner is shipped), so that the suction port becomes the exhaust port.

Second, you can check the vacuum cleaner first. If the inner seal of the upper cover is filtered off, if the seal is detached, the suction of the vacuum cleaner may be reduced due to air leakage.

3. Check if the separation barrel at the bottom of the vacuum cleaner is installed. If the separation barrel is not properly installed, the vacuum cleaner will not be sealed, resulting in air leakage. Eventually the vacuum cleaner has no suction.

4. The power line of the 380V high-power vacuum cleaner is composed of one neutral wire and three hot wires. If the order of the three fire wires is inconsistent with the wiring sequence at the customer's factory power socket, the vacuum cleaner may be reversed. This is the vacuum cleaner. Suction and wind phenomenon.

Solution: The red, blue and black wires are fire wires. You can exchange the two positions of the red, blue and black wires at the plug to see if the suction is normal.