Operating Controls - Jet JWL-1640EVS Operating Instructions And Parts Manual

Figure 7-14

8.0 Operating controls

See Figures 8-1,8-2.
On/off switch (C): Pull to start lathe, push to stop.
The safety key (C ) can be removed to prevent
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unauthorized use of lathe. The safety key must be
inserted to restart the lathe.
Note: If a power outage occurs during operation,
the lathe will not immediately restart when power
resumes. Cycle the ON switch to restart.
Figure 8-1: switch safety key
Speed control knob (D): Clockwise to increase,
counterclockwise to decrease. Speed is displayed
as RPM (revolutions per minute) on digital readout
(E).
Change speed while lathe
spindle is turning to avoid overstressing belt.
Figure 8-2: operating controls
Forward/Reverse (F)
When turning with a face plate,
make sure both set screws on face plate are
tight before reversing spindle direction. Failure
to comply may cause face plate to spin loose
from spindle.
A.C. Inverter (mounted to rear of headstock)
The 1640EVS Lathe uses the latest technology in
A.C. inverter drives to provide infinitely variable
spindle speeds within the specified ranges (see
sect. 4.0, Specifications). 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 1-1/2 horsepower motor is designed for use
with inverter drives, and is balanced to reduce
noise and minimize vibration.
The A.C. Inverter is pre-programmed from the
factory. DO NOT
INVERTER SETTINGS. Use only the controls on
the front of headstock. If you suspect there is a
problem with the inverter or inverter settings,
contact JET technical service at 1-800-274-6848.
A lightning strike or power
surge may cause inverter failure. When lathe is
not in use, disconnect power plug, or have a 3-
or 4-pole disconnect installed on the power
side.
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ATTEMPT TO ADJUST