3TECH L-28, User Manual

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Fault Possible causes Solutions
Low vibration
The tip hasn’t been screwed on the handpiece tightly Screw the tips tightly by torque wrench
The tip is shaken loose by vibration Screw on the tip tightly
The coupling between the handpiece and the cable isn't dry Dry it, especially the water between handpIece and connector
The tip is worn out or deformation Change another tip
The handpiece generates heat The water control switch is in a low setting Turn the water control switch to a higher grade
LED light don’t work
Poor contact Contact tightly
Something wrong with LED light Change a new one
LED lamp installed backwards
Please install the “+” of the LED lamp to the “+” of the
handpiece
There is water seeping from
the coupling between the
handpiece and the cable
The waterproof “O” ring is damaged Change a new “O” ring
If the problem still can’t be solved, please contact the local dealer.