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CAUTION: The motor will be damaged if it is repeatedly overloaded or overheated.
Always cool the motor by running at no load for a few minutes whenever it stops from either overheat or
overload.
7) SAFETY CLUTCH
This machine is equipped with a mechanical clutch to protect the operator and machine from excessive
torque forces. When the preset maximum torque level is reached, the clutch will slip.
Normally, the electronic overload will operate first. But if the load is very sudden or extreme, such as when the
bit gets stuck, the clutch will operate first.
After the clutch slips many times, it will become worn and slip at lower and lower torque levels.
When this happens, it must be serviced by an authorized service provider.
The recommended torque of the clutch nut is 21 Nm.
For qualified technicians, please see the instructions on p.14 "CLUTCH REPLACEMENT"
CAUTION: Always ease off the load immediately whenever the clutch slips. Do not allow the clutch to
continue slipping or it will wear out prematurely.
WARNING: When coring through a floor, the core will fall down. Take precautions to avoid injury or
damage below.
NOTE: When drilling with a new bit for the first time, use less than normal feed pressure for a time
until it breaks-in.
DRILLING INSTRUCTIONS
1.
Press the ON button to turn the machine on.
2.
Open the water valve slightly and very gently begin the cut. use very light feed pressure to prevent the
bit from wandering until the bit is fully penetrated into the cut.
3.
Make adjustments to the water feed as needed. The water leaving the cut should be a solid colored
slurry with about the consistency of milk. If the exiting water is clear, then you may reduce the water flow.
If the exiting water is thick and muddy, then increase the water. It's very important that the water
has enough pressure to flush cutting debris out of the cut.
4.
Once in the cut, use steady feed pressure for about 30 seconds, then back off feed pressure for a few
seconds to allow cutting debris to escape the kerf (cutting area) and for the cutting surface of the bit to
cool. This has the added benefit of allowing the motor to remain within a good working temperature.
Repeat this cycle until finished.
5.
When the cut is almost finished and the bit is about to break through, the bit will be very liable to get
stuck. Take extra care gripping the machine tightly and reduce feed pressure at this point.
WARNING: Always keep your face away from the machine.
WARNING: If the rig breaks loose of its mountings, it will move to the right. (The entire assembly will
rotate counterclockwise.) Avoid standing to the right of the rig and avoid operating from the right side
if possible and be ready to jump out of the way in time.
Arrange the power supply cable with minimal slack and oriented in such a way that if the machine gets out of
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