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(B) Forward/Reverse
When turning with a face
plate, make sure both set screws on the face
plate are tight (see Figure 22) before
reversing the spindle. Failure to comply may
cause the face plate to spin loose from the
spindle.
(C) Speed Control Dial: Always start the Lathe
at the lowest speed, with the dial rotated all the
way counter clockwise.
A.C. Inverter (mounted to rear of headstock)
The 3520B Lathe uses the latest technology in
A.C. inverter drives to provide infinitely variable
spindle speeds within the specified ranges
(shown under “Specifications” on page 6). 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 2 horsepower motor is specially designed
for use with inverter drives, and is balanced to
reduce noise and minimize vibration.
The A.C. Inverter does not require any
programming – it is pre-programmed from the
factory. The buttons on the face of the
inverter should never be pushed at any time.
Use only the controls on the front of the
headstock.
If you suspect there is a problem with the
inverter or the inverter settings, contact WMH
Tool Group technical service at 1-800-274-6848.
Operation
The information which follows is general in
nature and is not intended to be a complete
course in wood turning. Nothing can replace the
knowledge gained by talking with experienced
woodturners or consulting books, articles, etc.
Above all, simple trial and error will aid in
developing proficiency in the craft.
Inspection
Before operating the lathe, check that everything
is in proper working order:
1. Level your machine; use the adjustable
levelers to help reduce vibration.
2. Check bearings; adjust only if endplay
exists.
3. Check belt; it should be snug but not overly
tight.