T Y P - 7 5 M A G D R I L L
12
Troubleshooting
Note
SERVICING SHOULD ONLY BE DONE BY A QUALIFIED TECHNICIAN.
DON’T FORGET TO UNPLUG POWER TO UNIT PRIOR TO SERVICE!
PROBLEM
SOLUTION
Motor does not turn on.
1) Magnet not turned on. Magnet has to be engaged prior to motor
working.
2) Check external power source (extension cord, breaker, etc).
3) Loose internal wire. Check and secure if necessary.
4) Motor brushes defective. Replace if necessary.
5) Check the fuse at the control panel. If it is blown, replace with
same size.
6) Check the back of the internal PC board for a short. Replace if
necessary.
7) Check the relays on the PC board to see if there are any shorts.
Replace if necessary.
8) Check to ensure the motor on/off switch is operable. Replace if
necessary.
Motor turns on when the
magnet is turned on.
1) PC board has a short or relays are fused in closed position.
Check and replace PC board/relay if necessary.
Excessive sparking
when motor is running.
1) This may indicate the presence of debris in the motor or worn out
carbon brushes. Check the brushes for unusual wear and replace
if necessary. Clean out the internal motor armature if necessary.
2) Armature has a rough edge. Inspect and replace if necessary.
Magnetic does not hold
to work area.
1) Work surface thickness is too small. A minimum of 3/8” (10mm)
continuous ferrous steel must be used for magnetic adhesion.
NOTE: It is normal to be able to push these drills off their adhesion
if pushing from the top side. CAUTION: These drills do not work
on sheet metal!
2) Entire magnet base is not on the work surface.
3) Voltage is low at the machine. Check voltage.
4) There is debris or excess material between the work area and the
magnetic base. Clean work area surface.
Hole is not cutting.
1) Cutter is dull. Sharpen or replace.
2) Work area material is not appropriate for cutter type. High carbon
type steels require special cutting bits (tungsten carbide tip, etc).
Chapter
4
