(one) The motor does not rotate

1. Power is not connected - Power is connected;

2. The motor does not work - check the motor wiring or Change the motor

3. Fan head is damaged - repair the fan or ｒｅｐｌａｃｅ it

4. There is a foreign object stuck in the fan - remove the foreign object

(two) Increased noise

1. Bearing dry lubrication - add bearing grease

2. Bearing damage - Change the bearing

3. Impeller wear - Change the impeller or pump head

4. Fasteners are loose or falling off - tighten fasteners

5. There is foreign matter in the fan - remove the foreign matter or Change the pump head

(three) Increased vibration

1. Bearing damage - Change the bearing

2. Impeller is unbalanced - remove foreign matter from the impeller or check the dynamic and static balance

3. Spindle deformation - Change the spindle or pump head

4. The working state enters the turbulent earthquake zone - adjust the working state to avoid the turbulent earthquake zone

5. The filter screens at the air inlet and outlet are clogged - clean the filters

(Four) Temperature rise

1. The air inlet temperature is too high - reduce the air inlet temperature

2. Bearing dry lubrication - add bearing grease

3. The fan efficiency is reduced - remove the dust from the blade path or Change the pump head

4. Work status changes - adjust work status

5. Ambient temperature rises - increase ambient ventilation and heat dissipation

(five) Pressure reduction

1. Pump head speed decreases - power supply voltage is low or motor is faulty

2. Increased pipe network resistance - Reduced pipe network resistance

3. Work status changes - adjust work status

4. Motor direction reversed - rewire the motor

(six) Flow reduction

1. The inlet and outlet air filters are clogged - clean the filters

2. Pump head speed decreases - power supply voltage is low or motor is faulty

3. Increased pipe network resistance - Reduced pipe network resistance

4. Work status increased - adjust work status

5. Motor direction reversed - rewire the motor