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TRAK Machine Tools
Southwestern Industries, Inc.
TRAK VMC Mills with ProtoTRAK RMX CNC Safety, Installation, Maintenance, Service & Parts List
2.8.2 Transformer Option
The TRAK VMC comes with an optional step down transformer, which takes 480 volts down to 220 volts.
The transformer comes with multiple taps to allow for up to 3 different input voltages. The 3 taps are
rated for 480 volts down to 220 volts. See figure 2.8.2a. The machine ships out from the factory with
the wires attached to the 440-volt taps. Please adjust these 3 wires depending on the input voltage to
the machine.
There is also a 200-volt and 220-volt tap on the secondary side of the transformer. In most cases the
wires will be on the 220-volt tap. As a general rule, we would like the output voltage from the
transformer to be between 220 and 230 volts. On a rare occasion where the customer
’
s shop is around
500 volts, it may be necessary to move the wires from the 220 to 200-volt tap. You should also place the
primary side wires on the 480 taps.
In the case of 415 volts, it is better to place the wires on the 400-volt taps as the output voltage will be
closer to 230 volts.
Figure 2.8.2a
2.9 Air Connection
Connect the air supply to the quick disconnect coupling to the left of the pressure regulator and beneath
the in-
line air switch. The air supply line should have a minimum of ½” inside diameter. It is
recommended that a water separator or air dryer be installed upstream of the VMC air supply. Connect
the air supply to the quick disconnect coupling to the left of the pressure regulator and beneath the in-
line air switch. The air supply line should have a minimum of ½” inside diameter. It is recommended
that a water separator or air dryer be installed upstream of the VMC air supply.