After the spraying is completed or requires a certain interval of time before spraying, the suction pipe should be lifted from the paint bucket in a timely manner to make the spraying machine run empty. The remaining paint in the paint pump, suction pipe, high-pressure hose, and spray gun should be discharged, and then the diluent or solvent should be circulated empty to clean all the paint hydraulic circuits in the paint pump, suction pipe, discharge valve, high-pressure hose, airless spray gun, nozzle, etc. When cleaning, the inlet balloon valve should be opened slightly, It is advisable to control the reciprocating frequency of the spraying machine within 30-40 times per minute.
