5
PM-236 v4 -207.indd
LEVELING
Make sure the lathe is in its permanent location. The
leveling procedure ensures that the lathe bed is in the
same state as it was when the lathe was checked for ac-
curacy in manufacture — level from end to end along the
bed, and from front to back. In other words, no warping.
Make sure all leveling mounts and/or shims are
proper-
ly weight bearing
, firmly in contact with the floor. Check
and adjust level from end to end using a “precision
machinist’s level”, if available. If not, use the most reli-
able level on hand. Check and adjust level front-to-back
across the bed using a matched pair of spacer blocks to
clear the Vee tenons on the bed ways. The blocks need
to be at least /4 inch thick, ground or otherwise accu-
rately dimensioned. Alternatively, check for level on the
ground surface of the cross slide as the carriage is tra-
versed from end to end. See also "Checking Alignment"
later in this section.
FOOTBRAKE ADJUSTMENT
This is a two-man procedure, see Figure -3:
Unhook the extension spring
1
, and fully loosen all
four socket heads on the connecting sleeve
2
.
While observing the switch arm and follower, Figure
-6, raise the drawbar
3
, adjusting the stop screw
4
to stop further upward movement of the drawbar at
the point where the microswitch is actuated, but no
further (additional travel may bend the switch arm).
Hook the extension spring onto its anchor bolt, then
raise the footbrake treadle to the desired height off
.
2.
3.
Figure -6
Footbrake switch
the floor.
Tighten all four socket heads on the connecting
sleeve.
While observing the footbrake switch as before, press
and release the treadle a few times to ensure that the
switch opens and closes reliably.
Lubricate the footbrake shaft.
CONNECTING POWER
As shipped. the PM-236 is set for 220 V. If your supply
is nominally 240 V, it may be desirable to alter connec-
tions to the 24V transformer in the electrical box.
If the lathe did not come with a pre-installed power cord,
connect to the power source using 2 AWG (minimum)
3-wire cord through a strain relief bushing sized for the
electrical box ports. Depending on installed options and
other factors, the entry point shown in Figure -7 may
not be available. Connect the ground wire (PE) to the
grounding plate at bottom left. Connect L, L2 to the left-
most two terminals on the bottom terminal strip.
4.
5.
6.
Figure -7
Electrical box inputs/outputs
This configuration may vary depending on installed options, etc.
