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Figure 22
Materials used:
2 – 2x6's (cut to length).
10 – wood dowels, 4' length, 5/8" diameter.
1. Mark your hole centers (2" centers) along the
length of a 2x6. Place the holes so that the
tops of the dowels will be even with the tops of
the ledges on the Lathe. Also, adjust your hole
centers as necessary so that the first and last
dowel will begin at approximately the same
distance from the ledge at both ends of the
Lathe.
2. Use a 5/8" spade bit chucked in a drill press or
in a portable drill. Bore the holes through one
2x6; this will be the rear piece.
3. On the other 2x6, do not bore through but only
deep enough to securely hold the ends of the
dowel rods. This will be the front piece and will
provide a pleasing appearance at the front of
your Lathe.
4. When all holes have been bored, place the
2x6's on edge in the outer ledges of the Lathe.
5. Cut the dowel rods to length with a miter saw
or hand saw, so that after insertion the rods
will be flush with the back of the rear 2x6.
6. Insert the dowel rods through the holes in the
rear 2x6, as shown in Figure 22.
7. A strip of wood can be screwed to the rear 2x6
to cover the dowel holes and prevent the
dowels from working out.
8.0 Electrical connections
Electrical connections must be
made by a qualified electrician in compliance with
all relevant codes. This machine must be properly
grounded to help prevent electrical shock and
possible fatal injury.
The 4224B Lathe will operate on single phase or
three phase, 230 volt power supply.
Make sure the characteristics of your power supply
match the power specifications on the lathe
inverter.
Before connecting to power source, be sure switch
is in off position.
It is recommended that the lathe be connected to a
dedicated 20 amp circuit with a 20 amp circuit
breaker or time-delay fuse marked "D". Local
codes take precedence over recommendations.
8.1 Single phase operation
A three wire pigtail for use on 230 volt single phase
power is attached to the inverter and may be "hard-
wired" to the power source, or connected to a
UL/CSA listed receptacle plug.
Connect the 230 volt supply to the black and white
leads and ground the green lead.
If you are hard-wiring the Lathe to a panel, make
sure a disconnect is available for the operator.
During hard-wiring of the Lathe, make sure the
fuses have been removed or the breakers have
been tripped in the circuit to which the Lathe will be
connected. Place a warning placard on the fuse
holder or circuit breaker to prevent it being turned
on while the machine is being wired.
8.2 Three phase operation
If three phase power is used, it will be necessary to
replace the pigtail wire attached to the inverter with
a 12/4 wire and connect the three hot leads to the
inverter at R, S, T as shown in the wiring diagram
in section 18.0. Always connect the ground lead.
8.3 Variable frequency drive
The lathe uses a Variable Frequency Drive – also
called an A.C. Inverter – to provide infinitely
variable spindle speeds within the specified
ranges. The inverter controls the speed of the
motor by varying the frequency of the voltage
supplied to the motor. The inverter provides an
acceleration ramp that eliminates the shock of
normal starting. Also, a braking feature eliminates
long coasting periods after the lathe is turned off.
The 3-horsepower motor is specially designed for
use with inverter drives, and is balanced to reduce
noise and minimize vibration.
16
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