Delta 28-293, Инструкция по эксплуатации, Страница: 10 / 16

10
ADJUSTING BLADE TENSION
CAUTION: DISCONNECT TOOL FROM POWER SOURCE.
A series of graduations is located on the back of the upper
wheel slide bracket. These graduations indicate the proper
tension for various widths of blades. With the blade on the
wheels, turn the knob (A) Fig. 21 to raise or lower the wheel,
until the red fiber washer (B) is in line with the proper gradu-
ation for the size of the blade used.
These graduations are correct for average work, and will not
be affected by rebrazing of the saw blade. Use these gradu-
ations until you become familiar enough with the operation
of the band saw to vary the tension for different kinds of
blades or work.
IMPORTANT: OVER-STRAINING IS A COMMON CAUSE
OF BLADE BREAKAGE AND OTHER UNSATISFACTORY
BLADE PERFORMANCE. RELEASE THE TENSION WHEN
THE TOOL IS NOT IN USE.
TRACKING THE BLADE
CAUTION: DISCONNECT TOOL FROM POWER SOURCE.
IMPORTANT: Before tracking the blade, make sure that the blade guides and blade support bearings are clear of the blade.
After applying tension to the blade, rotate the wheels slowly forward by hand and observe the blade’s movement. The blade
(A) Fig. 24 should travel in the center of the upper tire. If the blade creeps toward the front edge, loosen the wing nut (B) Fig.
25, and tighten the thumb screw (C). This action draws the blade toward the center of the tire. If the blade creeps toward the
back edge, turn the thumb screw in the opposite direction. Adjust the thumb screw (C) Fig. 25 only a fraction of a turn each
time.
NEVER TRACK THE BLADE WHILE THE TOOL IS RUNNING . After the blade is tracking in the center of the tires, tight-
en the wing nut (B) Fig. 25.
VERTICAL ADJUSTMENT OF THE
UPPER BLADE GUIDE ASSEMBLY
CAUTION: DISCONNECT TOOL FROM POWER SOURCE.
Readjust the blade guides and bearings according to the
following instructions.
Set the upper blade guide assembly (A) Fig. 26 as close as
possible to the top surface of the workpiece. Loosen the
lock knob (B) and move the guide assembly (A) to the
desired position.
Fig. 23 Fig. 24
Fig. 25
Fig. 26
A
A
B
C
A
B
D