Arfa 1018S, Инструкция по эксплуатации

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11 ADJUSTING BLADE TENSION
To tension the blade, lift up the left wheel cover
and turn the blade tension handle (A) Fig. 8,
clockwise. A pointer and tension scale (B) is
located underneath the wheel. The scale is
graduated to indicate blade tension of 20,000,
30,000 and 35,000 pounds per square inch (psi).
For car-bon blades (similar to the one supplied
with the machine) the blade should be tensioned
at 20,000 psi. For bi-metal blades, the blade
should be tensioned at 30,000 or 35,000 psi.
Always release blade tension at the end of each work day to prolong blade life.
B Fig. 8 A
12 ADJUSTING BLADE GUIDE SUPPORT
ARM
A B Fig. 9
The blade guide support arm (A) Fig. 10, should
be set as close to the workpiece as possible. To
move the sup-port arm, first loosen clamp knob
(B). move the support arm (A) into relationship
with the workpiece. When you are sure the
support arm will not interfere with the workpiece,
first tighten clamp knob (B).
13 ADJUSTING FEED RATE
When the feed rate control knob is turned clockwise as far as it will go the saw frame will
not move down, but it can be raised to the up position. By turning the feed rate control
knob counterclockwise, the flow of oil from the cylinder is regulated and determines the
speed at which the saw frame will lower and the blade will feed through the work. Too
many factors are involved to make tabulated data practical on feed rates. As a general
rule, an even downward pressure without forcing the blade gives best results. Avoid
forcing the blade at the start as this may shorten blade life and produce a bad cut. By
in-specting the chips while the cut is being made will indicate whether the feed rate is
correct. Fine powdery chips in-dicate the feed rate is too light; the teeth are rubbing over
the surface instead of cutting. Burned chips indicate ex-cessive feed, which causes the
teeth to break off as the blade overheats. The ideal feed rate is indicated by chips that
have a free curl and this will give the fastest cutting time and longest blade life.
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