Reasons:

(1) Feed is excessive and air duct is blocked by powder.
(2) Pipeline exhaust is not smooth and circulating air generates heat to make the machine temperature increase and fan current drop.

Solving method :

(1) Reduce feed quantity and clean up the powder in air duct ;
(2) Open the air pipe valve to a large degree, and  feed material temperature should be controlled below 6℃

Reasons :

(1)The blades of classifying wheel wears too seriously to make the classifying wheel lose its classifying function.
(2) Air volume of fan is not appropriate.

Solving Method :

(1) Replace the blades;
(2) Reduce the inlet air volume of the fan to avoid too coarse powder and increase the inlet air volume of  the fan to avoid too fine powder.

Reason:

The reason exists inside the milling chamber. Stop the machine and open the grinding chamber , use your hand to rotate the machine, you will find  that sometimes some rollers rotates,however, sometimes they can not rotate , and some rollers and grinding rings are broken, this problem reason is  lubrication for roller bearing is not good.

The reasons are:

(1) Parts are not fastened;
(2) Bottom screw cap is loose;
(3) Main shaft is bent to be distorted and the weight of some part is unbalanced.

Solving method:

(1) Check the firmness of each component;
(2) Tighten the screw cap;
(3) Replace the main shaft and adjust the balance degree.

Problem:  triangle belt is loose

Solving method:

Tighten the triangle belt and adjust other components properly so as to achieve the satisfied particle size.