GE VERTICAL DRILLING MOTOR GE752 - Manual (Page 41)

Vertical Drilling Motor, Type GE752, GEK–91584D
41
FIG. 23. CONNECTION DIAGRAM (41A330278, CHG. 0). E–38055B.
MODELS
SEE TABLE 2
TO CHANGE MOTOR DIRECTION:
TO RUN CCW VIEWED FROM COMMUTATOR END,
CONNECT:
F1 TO POSITIVE
F2 TO NEGATIVE
A1 TO POSITIVE
A2 TO NEGATIVE
TO RUN CW VIEWED FROM COMMUTATOR END,
CONNECT:
F1 TO NEGATIVE
F2 TO POSITIVE
A1 TO POSITIVE
A2 TO NEGATIVE
Undercutting
See Fig. 28 for a diagram of proper undercut.
A sharp hacksaw blade may be used but caution
must be observed since a dull blade or saw produces
small cracks in the mica into which dirt or moisture may
accumulate and cause a breakdown in the insulation be-
tween the commutator segments.
With practice, hand–held power undercutters can be
used. Follow the tool manufacturer’s instructions and