Wellsaw 613 - Manual (Page 6)

Operating Instructions .
Cutting Tips
1. For longer blade life, start each cut carefully.
2. For new blade, reduce feed pressure on first two
cuts or about 100 square inches.
3.
Keep blade guides as close to the vise jaws as
possible.
4.
Make sure all four legs of the saw are in solid
contact with the floor.
Automatic Stop
When the blade has completed a cut through the
material, the saw frame activates a limit switch which
shuts the motor off.
When changing a blade or doing any other mainte-
nance or repair, be sure the automatic stop is engaged or
disconnect the main power supply.
It is necessary to raise the saw frame clear of this limit
switch actuator before the saw can be started.
Dash Pot
Machines are equipped with a dash pot [frame check]
for the purpose of stabilizing downward travel of the
saw frame, thereby protecting the saw blade from
damage. The action of the dash pot is hydraulic and
controlled by fluid being passed through an orifice in
the piston on the downward stroke.
Fill within 1" of the top of the bottom cylinder with
Mobil Velocite Oil #6 or equivalent.
Frame Weight Adjustment
The position of the collar in relation to the spring on
the dash pot acts as the frame weight adjustment.
The proper frame weight is approximately 10 lbs. and
is obtained by positioning the top of the collar 4" down
from the top edge of the upper cylinder. For less frame
weight, loosen the collar and move it down toward the
tension spring. Reverse this action for more frame
weight.
Too much frame weight will cause the blade to make
crooked cuts!
Speed Selection
Saws are equipped with step pulleys providing blade
speeds of 50, 90, 160 and 250 feet-per-minute. High
speeds are suggested for cutting thin-wall tubing,
channels, aluminum, brass or any metal that will not
burn blade teeth. Use medium speed for general cut-
ting such as cold rolled, machine steels, heavy chan-
nels, etc. Run at low speed for cutting nickel steels or
any metal requiring a slow speed on a lathe. When
cutting brass, use a blade that has not been used on
other metals and apply beeswax to the teeth. See page
22 for suggested Blade Speed combinations.
B e l t
Pivoted mounting provides for quick belt change. With
the belt in pulley grooves for the desire speed, swing
motor to put proper tension in the belt. Tighten thumb
screw to hold motor in proper operating position.
Fixed Vise Jaw
The two pins in the fixed vise jaw should be kept in
place the ensure square cuts. For cutting angles, the
pins must be removed to the desired position and
tightened with clamp bolts. The vise pins allow you to
quickly relocate the fixed vise jaw for approximate 90
0
cutting. For final, accurate cutting, the fixed vise jaw
should be squared with the blade. [See Blade Guide
Alignment.]
Sliding Vise Jaw
The sliding vise jaw is fitted with a lift plate and
ratchet dog for quick action. A hand wheel tightens the
vise on the workpiece. Excessive pressure is not needed
to hold the workpiece securely!
Maximum Capacity
To obtain maximum vise capacity, remove vise jaw
pins and move fixed vise toward motor end to the last
two holes in the bed. Make sure the stock in the vise
will not strike the ratchet arm.
Feeding Pressure
Feed pressure is varied by moving the weight on the
top side of the frame. Blade pressure increases as the
weight is moved toward the open end of the saw.
Excessive pressure may cause a run-out of the blade.
[See page 22 for recommendations.]
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