Powermatic 3520B User Manual download pdf (Page 20)

(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.

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.

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Powermatic 3520B User Manual Page 20

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