Rotabroach CM/330C Operating Instructions Manual page 6

Issue 9
Cutting tools may shatter always extended the guard over the cutter during the drilling operation. Failure to
do so may result in personal injury. When moving the machine ensure the guard is over the cutter failure to do
so may cause injury.
On completion of the cut, a slug will be ejected. DO NOT operate the machine if the ejected slug may cause
injury.
Ensure an adequate supply of coolant is supplied to the cutter during the cutting cycle.
Manual handling
When moving the machine always ensure that you use the carry handle on the machine failure to do so may
cause damage to the machine. Never pick the machine up by the cutter as this may cause injury.
Caution this machine is heavy and may require help manoeuvring especially when working
overhead.
[3] OPERATING INSTRUCTIONS
Before connecting the pneumatic supply ensure the motor switch is in the OFF position.
Locate the machine in the required position for cutting the hole and activate the magnet by means of the
ratchet handle (clockwise viewed from rear). Ensure that magnet rod is fully screwed home.
Keep the inside of the cutter clear of swarf - it restricts the operating depth of the cutter.
Apply the cutting fluid to the reservoir via the inducement slots in the arbor. It is then «metered» out by the
pilot and is applied directly to the cutting edge. (Alternatively, fluid can be applied directly on to the work
piece making certain that it floods into the groove formed by the cutter.)
Depress the pilot to ensure cutting fluid is being correctly metered.
Start the motor by turning the rotary valve to ON position see below
Apply light pressure when commencing to cut a hole until the cutter is introduced into the work surface.
Pressure can then be increased sufficiently to load the motor. Excessive pressure is undesirable when using the
Rotabroach Micro-Air machine, it does not increase the speed of penetration and may cause the motor to stall.
The motor will restart when the excessive pressure is released.
Always ensure that the slug has been ejected from the previous hole before commencing to cut the next.
If the slug sticks in the cutter, move the machine to a flat surface, switch on the magnet and gently bring the
cutter down to make contact with the surface. This will usually straighten a cocked slug and allow it to eject
normally.
Original Version
On
Position
6
December 2011
Off
Position