1. What should I do if the feed pump of the pneumatic polyurethane spray equipment does not work: 1. Crystals on the feed pump feed shaft will block the feed pump, making the feed pump inoperable 2. The rubber of the reversing rubber cap comes off, making the feed pump inoperable

General knowledge of polyurethane spraying machine operationThe polyurethane spraying machine belongs to an airless high-pressure mixing type.Specific operation:1. Insert the two feed pumps into industrial buckets containing components A and B, and the materials enter the body from the feed pump tog