DoAll C-4100NC, Instruction Manual

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22
SAW BAND PREPARATION
Cutting Capacity & Saw Band Recommendations
1. The machine’s standard cutting capacity for
rectangular stock is 14 inches (355.6 mm) high by
16 inches (406.4 mm) wide. It will also cut round
stock (solids, tubing, pipe, etc.) up to 16-1/2 inches
(419.1 mm) in diameter. Cutting capacity may vary
with the addition of accessories. Any variation will
be noted when applicable.
2. A high-speed DoALL Imperial Bi-Metal 100 saw
band with protective Saw Cap is supplied with the
machine. Band length is 186 inches (4724.4 mm);
width is 1-1/2 inches (38.1 mm); recommended
gage is 0.050-inch (1.27 mm).
3. A machine in correct adjustment, good operating
condition and using proper cutting fluid is essential
to efficient sawing.
4. Proper blade care should include: (a) Pushing uncut
stock away from the saw band and lowering the saw
head if the machine is to remain idle for a period of
time; (b) Using correct band speed, feed force and
cutting fluids during operation; (c) Removing scale
from stock before sawing; (d) Keeping the protective
Saw Cap over blade teeth until installation time.
Blade Guards
1. The machine has three (3) blade-covering guards
for operator safety. All guards must be in place
before any sawing procedure is started.
• Left Guard . This guard is attached to the left
saw guide arm and extends toward the idler
bandwheel.
• Right Guard. This guard extends between the right
saw guide arm and the drive bandwheel. This is
a fixed, integral part of the right bandwheel
door.
• Top Channel Guards. These guards are mounted
on the head beam and located between the
bandwheels doors.
DO NOT defeat their purpose by operating the
machine without these guards attached. THEY
ARE THERE FOR YOUR PROTECTION!
Saw Guide Insert Adjustment
1. L o o s e n t h e a d j u s t m e n t s c r e w ( t u r n
counterclockwise) on each saw guide arm. Then:
(a) Remove the old saw band; (b) Replace the saw
band; (c) Tighten the insert adjustment screw (turn
clockwise) to the fixed stop.
Saw Band Removal
Always use extreme care when handling saw
bands. DO NOT attempt to change saw bands
while the band drive motor is running.
1. Push the Hydraulic Start button and move the Saw
Head Control selector to "UP". Then: (a) Allow
the saw head to raise to its maximum height; (b)
Move the Saw Head Control selector to "HOLD".
(c) Turn the Band Tension selector to "OFF" (this
moves the idler bandwheel to the right).
2. Open both bandwheel doors and engage each prop
rod in its catch hole; Then: (a) Loosen the top
clamp screw on the powered band brush bracket;
(b) Push the band brush down and away from the
blade teeth.
Adjusting Saw Guide Inserts.
3. Loosen the saw guide inserts on both saw guide arms
by turning each adjustment screw
counterclockwise
(do not allow the inserts to fall out).
Next:
(a)
Raise the work sensing arm and clamp it in the "up"
position;
(b)
Loosen the left saw guide arm clamp
handwheel;
(c)
Slide the left saw guide arm to the
right until it is about 10 inches (254.0 mm) from the
right saw guide arm.
4. Place a gloved hand on the back of the saw band
portion between the saw guide arms;
(a)
Push the
saw band down and out to disengage it from the saw
guide inserts
(you will want to grip the saw band
firmly as you manipulate it); (b)
Remove the saw
band from around the drive and idler bandwheels,
then from its top channel guards.
5. Grasp the upper and lower portions of the saw band
at approximately the center. Move each strand
vertically toward the other until your hands are about
12 inches (304.8 mm) apart.