randygrapes218;
The motor that I am using does not allow the dust to come in contact with the motor. Powder dust can ignite when free flowing through the air. Most people have experienced a "small" explosion when discharging the gun and the spark ignites the dust. Some people use a regular shop vac and have had no problems, but they do have explosion proof type vacuums available, but at a higher cost. That is the reason why I use an air vac when cleaning my booth, no contact with an electric motor. I have found it be safer than sorry. JMHO.
Jim
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