Vacuum pump in the scale composition is very complex, hardness is not the same. According to the composition of different scale can be divided into silicate scale, carbonate scale and sulfate scale. The silicate scale is the hardest, difficult to remove, carbonate scale is loose, and the sulfate scale is between the two. Since the scale component is complicated, it is difficult to remove it with one or several reagents. At present, there are two main ways to deal with scale, namely, mechanical descaling and chemical descaling.

Mechanical descaling method is a very effective method for a variety of scale, mainly through the use of tools to remove the scale, but the workload is large, must be demolition of the machine, the best machine with the planned downtime and pump overhaul At the same time.