5
1
、
This tool should be grounded while in use to protect the operator from electric shock. NOTICE ! To ensure the
grounding result, the grounding conductor of the power cord must be well connected with the grounding terminal of
power facility. This tool is equipped with grounding conductors. The Green(or Green and Yellow)conductor in the
Power Cord is the grounding wire. Never connect Green (or Green and Yellow) to a live terminal. The grounding wires
in this tool can not only earth the electric leakage safely, but also can eliminate ESD-the electrostatic that tool occurred
while in use.
2
、
The grounding is the most important task a user. Periodically, depends on the working condition and circumstance, for
maintaining a good function the user has to check the grounding condition every 3~6 months by an electric meter and
following simple step
s; Set the Ohm meter to level R*100(Ohm). Touching 2 test rods (“
＋
”
＆
”
－
”) together and reset
the meter to “0”. Using the Red(“
＋
”) rod to touch the Grounding wire on the Plug of controller’s cord, and the
Black(“
－
”) rod to the end of Bit Head. It stands for the grounding is normal if the meter is read as close as to “0”. For
getting a normal indication on the meter while in testing, need to press the test rods firmly to the testing objects.
3
、
The instrument QC of the tool is performed before the tool ex-factory. The grounding continuity test is conducted by
input 26A voltage to the end of earth terminal, and subject to the resistance value lower than 0.3Ohm.
WARNING
！
DO NOT OPERATE THIS TOOL WITHOUT
PROTECTIVE EARTH CONNECTED
Grounding Instructions
