PM-236 v4 -207.indd
Section 3 USING THE LATHE
MOTOR CONTROLS
Before doing anything, check the installation in-
structions and power-up procedure in Section 1
Before connecting power to the lathe, be sure the motor
control lever is set to OFF, Figure 3-2. Connect the lathe
to a 220 Vac outlet — the POWER lamp should light
— then operate the motor control lever to run the spindle
in both directions.
Check that the following interlocks function correctly:
E-Stop button.
Chuck guard, if installed.
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Figure 3-2
Set the motor control to OFF (mid travel)
SPINDLE DRIVE TRAIN
Two-step double-groove pulleys connect the motor to
the gearbox, Figure 3-3. The low speed configuration
gives spindle speeds from 65 to 200, high speed from
00 to 80 rpm. Because many users find that the low
range is suitable for most of their work, there is typically
no need to swap belts — unless a particular job calls for
a 50% speed increase. If the drive needs to be recon-
figured, Loosen the three hex head bolts securing the
Figure 3-3
Twin Vee belts drive the headstock gearbox
WHAT IS NOT IN THIS SECTION ...
The PM-236 is a conventional engine lathe that re-
quires little explanation except for details specific to this
particular model — speed selection, thread cutting, and
the carriage/cross slide power feed system. Because
the user is assumed to be familiar with general purpose
metal lathes, this section contains very little tutorial.
CONTROL PANEL
In addition to three gear shift levers (speed and feed
direction) the main control panel also includes a “jog”
control. This a momentary type push-button indepen-
dent of the motor control switch right of the apron. When
operated, ithe jog button runs the spindle in the forward
direction, stopping when released.
Figure 3-
Main control panel
Belt cover (to the left of the headstock).
Footbrake
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