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8.15 Tapping
1. Insert screw tap into spindle.
2. Move spindle into position.
3. Set spindle control to Forward.
4. Rotate the feed levers counterclockwise until
desired tapping depth is reached.
5. Reverse spindle direction and allow tap to
withdraw completely from workpiece.
6. Stop spindle by moving spindle control
switch to center.
8.16 Power ON/OFF
If your J-1230R was connected to its service
branch correctly, there will be a service
disconnect with an external power cutoff lever or
switch which disconnects the drill press from the
service branch. This is your ultimate protection
against
accidental
machine
clamping work pieces or inserting and removing
tooling. Always be certain you have turned off
power at this disconnect before beginning such
procedures.
8.17 Power ON light
When the cutout box power is ON, the red
POWER light on the upper left hand side of the
drill head (Figure 10) will be lit. In this mode,
power to the coolant pump and to the spindle
drive motor is controlled by the switches on the
control console.
8.18 Coolant control
The flood coolant system is controlled by the dial
on the front of the gearbox (Figure 10). If coolant
has been turned on, but does not flow, check the
pump rotation by observing the pump shaft. It
should be rotating in the direction of the arrow
on the pump casting. If rotation is incorrect, see
Section 6.4 Electrical Connections, for more
information.
Open the valve to the coolant nozzle using the
handle at the left of the head (see Figure
10).The proximity of the nozzle can be adjusted
by loosening the two knobs and sliding the
coolant pipe up or down as needed. Retighten
knobs.
8.19 Spindle motor controls
Power to spindle motor is controlled as follows:
1. The cutout box control lever must be in the
ON position.
start-up
when
21
2. The motor speed control switch must be in
either HI or LOW position.
3. The Emergency Stop switch must be
disengaged.
4. The arm/spindle control lever must be
engaged for selected rotation. See Section
8.24 Arm/spindle control lever.
8.20 Turning off spindle drive
To turn power OFF on the spindle drive motor
do one of the following:
1. Put the two speed motor switch in OFF
position, OR...
2. Put arm/spindle control lever in neutral,
OR...
3. Push red STOP switch, OR...
4. When servicing the tooling or other machine
components, put the service disconnect
lever in OFF position.
Once the STOP switch has been pushed (step 3
above) none of the other switches on the panel
can be used to control power to the spindle drive
motor or coolant pump until the STOP switch
has been reset.
8.21 Resetting STOP switch
Turn the Stop switch clockwise in the direction of
the arrow on the red button. The switch is re-set
and the other spindle motor controls can be
used.
8.22 Using load ammeter
An ammeter on the control console is used to
monitor the load on the spindle drive motor. It is
connected into one of the three power lines
which supply the main drive motor.
When the drive motor is ON and up to speed,
and there is no tooling being used to drill, tap or
bore
a
hole,
the
approximately 2.5 amps. If it exceeds this value
there is a problem internally (such as lack of
lubrication in the gearboxes, bad bearings, etc.).
You should turn off the machine and determine
the cause of any excessive free-running load.
Monitor
the
ammeter
operations. The ammeter should stay below 9
amps of current draw during machining. You
should adjust spindle speed, feed rate and
coolant use to maintain full load current draw
below the 9 amp value.
ammeter
should
read
during
machining
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