Is it advisable to operate a pump dry for a few minutes to drain any liquid from the sprayer system?

Operating a pump dry is not advisable because doing so can cause damage to the pump. Pumps are designed to be lubricated by the liquid they are moving; when they operate without liquid, there is insufficient lubrication and cooling. This lack of lubrication can lead to overheating, increased wear, and ultimately failure of the pump.

In addition, running a pump dry does not effectively clear residue or liquid from the system. There are more effective and safer methods for flushing and cleaning the sprayer system that do not involve risk of damaging the equipment. Proper protocols should always be followed to ensure both the longevity of the equipment and the effectiveness of the pesticide application process.