Troubleshooting - Scheppach 4906807901 Originalbetriebsanleitung

Troubleshooting

Warning: turn switch off and always remove plug from the power source before trouble shooting.
Trouble
Quill returns too slow or too
quickly
Chuck wiII not stay attached
to spindle. It wiII falls off when
trying to install.
Noisy operation
Wood splinters on underside.
Workpiece tom loose from
hand.
Drill bit bums.
Drill leads off hole not round.
Drill bit binds in workpiece.
Excessive drill bit run- out or
wobble.
28 GB
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Problem
Spring has improper tension
Dirt, grease or oil on the tapered
inside surface of the chuck or on
the spindle's tapered surface.
• Incorrect belt tension
• Dry spindle.
• Loose spindle pulley
• loose motor pulley.
No "backup material" behind
workpiece.
Not supported or clamped properly. Support workpiece or clamp it. See
• Incorrect speed.
• Chips not coming out of hole.
• Dull drill bit
• Feeding too slowly
• Hard grain in wood or lengths of
cutting lips and/or angle not equal
• Bent drill bit.
• Workpiece pinching drill bit or
excessive feed pressure.
• Improper belt tension.
• Bent drill bit
• Wom spindle bearings
• Drill bit not properly installed in
chuck.
• Chuck not properly installed.
Remedy
Adjust spring tension. See "Quill return spring".
Using household detergent, clean the tapered
surfaces of chuck and spindle ta remove all
dirt, grease and oil. See "Installing the chuck".
• Adjust belt tension. See "Choosing speed
and belt tensioning".
• Lublicate spindle. See "Lublication"
• Check tightness of retaining nut on pulley,
and tighten if necessary
• Tighten set screw in motor pulley
Use "backup material". See "Positioning table
and workpiece".
"Positioning table and workpiece".
• Change speed. See "Choosing speed and
belt tensioning".
• Retract drill bit frequently to remove chips.
• Resharpen drill bit.
• Feed fast enough ta allow drill bit to cut.
• Resharpen drill bit correctly.
• Replace drill bit.
• Suppar workpiece ar clamp it. See
"Positioning table and workpiece".
• Adjust belt tension. See "Choosing speed
and belt tensioning".
• Use a straight drill bit.
• Replace bearings.
• Install drill properly. See "Installing drill bits".
• Install chuck properly. See "Installing the
chuck".