Changsha Roots blower in the overhaul of any used parts, dismantle and check, nothing more than the following situations: First, the quality of the condition is still good, or wear and tear but can continue to use without repairs; Second, there are defects, but after repair can still continue to use; Third, there are large defects, difficult to repair or repair value is not great, need to be replaced.

In the inspection process, the parts that should be repaired and replaced should be repaired and replaced in a timely manner, otherwise the inspection quality of the blower will be affected. However, if there is no impact on the parts of the blind repair, or would have been able to continue to use the parts in advance of the replacement, but also will cause waste, increase maintenance costs. Therefore, to determine whether to repair and replace parts, in general, should follow the “necessary to repair and replace” principle.

Whether or not a part that can be repaired must be repaired rather than replaced should also be compared to the economics of repair versus replacement. This comparison is not just a comparison of the repair versus replacement cost of the part, but weighs the cost of the repair against the useful life of the repair.