4 ” Z 1 C O R E D R I L L
12
o
NOTE: Do not force the hole. Let the machine do most of the work.
Excessive physical effort should be avoided as it can cause damage to the
machine or the user.
o
If the unit jams in a hole, stop the drill immediately by quickly depressing the
“on” switch to prevent injury. Disconnect the drill from the power supply and
loosen the cutter by turning drill spindle counterclockwise. Never attempt to
free bit by starting motor!
§
After an interruption in drilling, make sure the drill bit is free and turns
before restarting the hole. Be very careful at this point to make certain
the drill does not bind when restarting.
o
CAUTION: It can take a 1-2 seconds for the safety clutch to engage otherwise
excessive wear and heat will develop.
Ø
Make sure to keep the cutting material lubricated.
Ø
Ease up on feed pressure as the cutter starts breaking through the backside of the
material.
o
Be certain all is clear on the output side of this core to prevent injury to
persons or property.
Ø
Finish drilling the hole.
Ø
Turn the motor off and disconnect power once the drill is safely back up in the non-
drilling position.
Ø
Turn water valve off.
Ø
Unbolt the wedge anchor.
Ø
Disconnect safety chain/strap and move the drill to a new drilling location.
INSTALLING CORING BITS
Ø
WARNING: Core bits can be sharp and should only be handled with gloves so as not
to cut the user during installation or removal.
Ø
Check that the bits are not damaged.
o
Coring bits that are damaged should not be used.
Ø
Make certain the machine is unplugged from power.
Ø
If using the drilling rig, raise the drill motor to ensure ample room to install the bit.
o
Apply grease to the spindle thread to prevent corrosion and allow easier core
bit removal.
Ø
Insert the coring bit and screw it onto the drill spindle.
Ø
Tighten the bit until fully tightened.
o
Use wrenches that fit the spindle and coring bit to fully tighten.
