completely close the air valve switch, otherwise it will damage the
equipment.
a) Installation and use of air valve
1. The silicone tube pointed by the first arrow connects the air
pump to the air valve.
2. The silicone tube pointed by arrow No.2 connects the air assist
nozzle to the air valve.
b) The air valve in the picture is closed
c) Turn the valve switch clockwise 90° to open the valve (as shown
below)
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