MK Diamond Products MK-Manta III, Руководство пользователя

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The MK-Manta III Core Drill uses either a shear pin or a friction clutch to protect the gear and motor
against overload. The shear pin drives the outer portion of the drive spindle. If the motor should over-
load the pin will shear. Extra shear pins are supplied or can be ordered from MK Diamond’s Customer
Service. Tighten only enough to remove the play, do not over tighten. Another model features a fric-
tion clutch rather than a shear pin to protect the motor and gears. If the motor overloads the clutch will
begin to slip and the bit will stop rotating. The clutch is factory-set and does not require adjustments.
However, under normal use, the clutch may start to slip at low torque. If this happens, refer to the mo-
tors Owner’s Manual.
SHEAR PIN AND CLUTCH PROTECTION
MANTA CORE DRILL III OPERATION
Bits with permanently attached adapters simply screw directly onto the threads of the drill spindle with
copper washer. Ensure that the end of the bit butts up squarely against the shoulder on the spindle.
When drilling through concrete floors, the core will generally drop from the diamond bit. Caution
should be provided for people and property below the drilling area.
The MK-Manta III Core Drill, equipped with a Milwaukee motor, has a 1 -1/4"
- 7 thread. For bits with other threads, use a shaft coupling. After a bit has
been mounted, turn the power on and check that there is a minimum of run-
out or wobble.
To reduce the risk of injury, always unplug tool before attaching or removing
accessories. Only use specifically recommended accessories. Others may
be hazardous.
If using the vacuum base, do not continue operations unless the vacuum
gauge reads more than 20 in-Hg. Normally, the gauge will read 23 inches or
more.
Grease the bit threads to help prevent the bit from seizing on the spindle due
to surface corrosion.
• Thread anti-clockwise to attach core bit.
• Thread clockwise to loosen.
MOUNTING BITS
DRILLING PROCEDURE
WARNING
WARNING
WARNING
NOTE:
1 . Ensure that you have read and fully understand the complete operation of the Manta III
Core Drill you have purchased prior to commencing drilling operations.
2 . Select and install a diamond core bit appropriate for the job.
3 . Select either high or low gear speed according to the chart in the Drilling Speeds section of
this manual. (Do not shift speed when motor is on.)
4 . Connect water hose to water swivel.
5 . Secure the rig as described in the Securing the Rig section of this manual.