When to use HEAVY DUTY series:
Lathes above 3 HP not fitted with a
clutch.
Air compressors: the motor pulley
diameter must also be reduced by
1/3, or a 50% larger motor can be
fitted.
Long heavy starting cycles,
frequent starting, frequent instant
reversing, or unattended motors or
equipment.
If jogging is required, or if there is
a good chance of the motor being
stalled during use