Cosen AH-250H, Instruction Manual

Page: 89 / 134

SYSTEMS TROUBLE SHOOTING
Section 9
9-4
WARNING DISCONNECT POWER CORD TO MOTOR BEFORE
ATTEMPTING ANY REPAIR OR INSPECTION
TROUBLE PROBABLE CAUSE SUGGESTED REMEDY
Too few teeth per inch Use finer tooth blade
Teeth
strippage Loading of gullets Use coarse tooth blade or cutting lubricant.
Excessive feed Decrease feed
Work not secured in vise Clamp material securely
Teeth too coarse Use a finer tooth blade
Misalignment of guides Adjust saw guides
Dry cutting Use cutting lubricant
Blade
breakage Excessive speed Lower speed. See Operating Instructions “Speed
selection.”
Excessive speed Reduce feed pressure. Refer to Operating Instructions
“Adjusting Feed.”
Excessive tension Tension blade to prevent slippage on drive wheel while
cutting.
Wheels out of line Adjust wheels
Guides out of line For a straight and true cut, realign guides, check
bearings for wear.
Run-out and
Run-in Excessive pressure Conservative pressure assures long blade life and clean
straight cuts.
Support of blade insufficient Move saw guides as close to work as possible.
Material not properly secured
in vise Clamp material in vise, level and securely.
Blade tension improper Loosen or tighten tension on blade.
Blade not in line with guide
bearings Check bearings for wear and alignment.
Blade
twisting Excessive blade pressure Decrease pressure and blade tension
Blade binding in cut Decrease feed pressure
Dry cutting Use lubricant on all materials, except cast iron
Premature
tooth wear Blade too coarse Use finer tooth blade
Not enough feed Increase feed so that blade does not ride in cut
Excessive speed Decrease speed
9.6 SAWING PROBLEMS AND SOLUTIONS
Page 89 Instruction Manual for AH-250H (B040) 04/12/2014