Jet Tools J-7040 - Manual (Page 8)

8
6.0 Machine setup
The saw delivered to you has been adjusted at the
factory. A number of test pieces have been cut
using the saw to verify the accuracy of cutting.
Therefore, the only setup operations required
before releasing the saw for service are spotting
the saw and establishing the electrical connections
to the motor.
6.1 Uncrating and spotting
Spot the saw where it makes the most sense for
the operations you will probably be doing. If you
are going to be doing cut-off work on very long
pieces of stock, allow plenty of room for the stock,
and the infeed and outfeed supports. Remove the
saw from the shipping skid and discard any hold-
down devices that were used to secure the saw to
the skid.
7.0 Electrical connections
JET recommends that any
wiring involving hard wiring of the saw to a
branch, or any change of voltage supplied to
the motor be performed by a licensed
electrician.
Observe the following when connecting to the
power source (wiring diagrams are shown in
section 15.0):
1. Make sure the saw is disconnected from the
power source, or that the fuses have been
removed or breakers tripped in the circuit in
which the saw will be connected. Place a
warning placard on the fuse or circuit breaker
to prevent accidental electrical shock.
2. If you are installing the motor power cord into a
receptacle, make sure to use the appropriate
plug.
3. If you are using hard-wired connections to a
junction box, connect the wires in the box, and
close the box.
4. Install the fuses or reset the breaker.
5. The saw is now ready for service.
It is recommended that the single phase band saw
(model J-7020), when operated on 115 volt power,
be connected to a dedicated 30 amp circuit with a
30 amp circuit breaker or time-delay fuse marked
“D”. When operated on 230 volt power, use a
dedicated 15 amp circuit with a 15 amp circuit
breaker or time-delay fuse marked “D”.
It is recommended that the three phase band saw
(model J-7040) on 230 volt power be connected to
a dedicated 15 amp circuit with a 20 amp circuit
breaker or time-delay fuse marked “D”; and for 460
volt power, a dedicated 10 amp circuit with a 20
amp circuit breaker or time-delay fuse marked “D”.
NOTE: Local codes take precedence over
recommendations.
8.0 Operating instructions
8.1 Controls
The operating controls for the saw are provided in
a control panel on the left side of the machine. The
control panel is mounted on a pivoting tube. The
pivoting tube allows the operator to position the
control panel in a convenient location.
Figure 1: Control panel
1. A power-on light is provided on the left side of
the control panel. The power-on light indicates
when power is connected to the machine.
2. An emergency stop button is provided on the
control panel. The emergency stop button
provides a means to rapidly cut off electrical
power.
3. The saw motor pushbutton switch starts the
saw motor and the E-stop button stops the
saw motor.
4. A green pushbutton switch is provided to the
right of the emergency stop pushbutton. The
pushbutton opens an electro-magnetic valve in
the hydraulic cylinder circuit. Opening the
valves allows the saw head to move downward
and put the saw blade in contact with the
workpiece.
5. A red release button on the electro-magnetic
valve provides a means to lower the saw head
when power to the machine has been
disconnected (see Figure 4).
6. The rate at which the saw head moves
downward is controlled by a hydraulic feed
rate control located on the top, rear of the saw
head (see Figure 3).
7. A coolant pump switch is provided on the
electrical equipment box on the back of the
machine (see figure 2).
8.2 Setting blade speed
1. The blade speed is controlled by an
adjustment mechanism on the right end of the
saw. Speed increases when the adjustment