This video demonstrates how to perform a rotary valve cleaning for the following GRS machines:
GraverMax SC
GraverMax G8
GraverMach
GraverMach AT
GraverSmith


Perform this cleaning if your handpiece is receiving a steady stream of air from the machine instead of consistent pulses of air.

Apply a small amount of denatured or isopropyl alcohol to your paper towel when cleaning rotary valve and rotor.

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