Hougen HMD500, Operator'S Manual

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REVIEW OPERATION OF CONTROLS
BEFORE INSTALLING A ROTABROACH CUTTER
IMPORTANT: Before turning on the machine, it is impera-
tive that the operator understands the interrelated func-
tions of the SAFETY SWITCH, GLIDE POSTS,
MAGNET SWITCHES, AND MOTOR SWITCHES.
1. Place Magnetic Drill on clean, flat steel plate that is at
least 3/8" thick.
2. Plug unit into proper AC power source. DO NOT use with
DC power.
3. Locate the Magnet ON and OFF switches and the MOTOR
ON and OFF switches as shown below.
MOTOR ON SWITCH — Starts the motor (will not function
unless the magnetic base is energized and the safety switch
is activated).
MOTOR OFF SWITCH — Deactivates motor. Magnetic base
remains energized and safety switch activated.
FEED RATE L.E.D. — Indicates status of power source to the
unit and cutting performance:
Unit plugged in, no load Green Solid
Magnet On, no load Green Solid
Motor On, no load Amber
Ideal Operating Range Flashing Green
Excessive load Solid Red
Low Voltage (when plugged in) Flashing Red
MAGNET ON SWITCH — Energizes the magnetic base and
activates the safety switch. Motor can now be started by
pushing the MOTOR ON switch.
MAGNET OFF SWITCH — De-energizes the magnetic base
and deactivates MOTOR ON switch. (Note: MAGNET OFF
switch will not function while motor is on.)
SAFETY SWITCH — Located in base of drill. Enables motor
operation only when magnet is properly seated on a clean
and flat work surface. Turns motor off if drill unit
should lift or shift while cutting (Fig. 6).
GLIDE POSTS — Lifts magnet and breaks residual magnetic
energy after magnet is turned off. It also acts as a glide point
when drill is being moved from one position to another on the
work surface, thus minimizing wear on magnet. It also
permits easier repositioning and protects the safety switch.
SAFETY SWITCH ADJUSTMENT
1. Unplug unit from power source and place it on a flat
sheet of steel that is at least 3/8" thick. Only magnet
portion should be on steel plate. Rear of magnet
(containing Glide Post) should hang over the edge of the
steel plate.
2. Remove Access Hole Screw (04156) from front of
housing.
3. Insert 5/32" Allen Wrench into access hole and back off
(counterclockwise) Microswitch Adjusting Screw (10969)
about three full turns.
4. Turn adjusting screw in (clockwise) about 1/8 turn at a
time (removing wrench, plugging motor to power source,
and turning magnet and motor ON each time) until you
find exactly where motor starts.
CAUTION — Turn switches OFF and unplug motor from
power source prior to each adjustment.
5. After determining point where motor starts, turn adjust-
ment screw clockwise one and a half turns.
6. Plug unit to power source. Turn Magnet and Motor
switches ON. Strike side of magnet at rear with rubber
hammer. Motor should shut off before the magnet
moves 3/4" in any direction.
7. Replace Access Hole Screw.
NOTE: Safety Switch adjustment should be checked
regularly following the procedure outlined in Step 6
above.
Access screw
(P/N 04156)
Safety Switch
Pivot Point