Version 1.0.5 dated 2019-06-05 Page 15Translation of the original instructions
DM35│DM35V│DM35PF│DM36VT│DM38VF│DM50│DM50V│DM50PM│DM60V│DM98V
GB
DM35xx_DM36VT_DM38VF_DM50xx_DM60V_DM98V_GB.fm
OPTIMUM
MASCHINEN - GERMANY
®
6 Malfunctions
Malfunction Cause/ Possible Effects Solution
Magnetic base not functioning • Switch contact faulty.
• The power supply is faulty, plug is
loose.
• Overload, the fuse has blown.
• Short circuit in the electromagnet or
faulty electromagnet.
• Magnetisability of the substrate too
low.
• Conductor plate faulty.
• Replace the switch.
• Replace the cable and plug.
• Replace the fuse.
• Replace or repair the electromag-
net.
• Check the thickness and material
properties of the substrate.
• Replace the conductor plate
Drilling spindle does not
switch on.
• Electromagnet is not switched on.
• The sensor detects too little magnetic
holding force on the component.
• Switch contact faulty.
• Bad contact of the carbon brush.
• Faulty rotor or stator winding.
• Before switching on the drilling spin-
dle, first switch on the electromag-
net.
•
"Magnetic holding force“ on
page 6
• Replace the switch.
• Replace the carbon brushes of the
electric motor.
• Completely replace the drilling
head.
Problems on the drive motor • The spark colour on the electric motor
is orange.
• Sparks are flying out.
• Sparks are flying in a ring from fire.
• Reduce the drilling feed.
• Please replace the carbon brushes.
• Check whether the rotor or stator
winding is faulty. Motor burnt out.
Drill or core hole drill "burnt
up"
• Feed too fast.
• Chips are not coming out of the drilled
hole.
• Drill blunt.
• No or too little cooling.
• Reduce feed.
• Extract drill more often during work.
• Sharpen drill bit/ use a new drill bit.
• Use cooling agent
Drill tip is running off centre,
the drilled hole is non-round
• Hard points on the workpiece
• Length of the cutting spirals/or angles
on the tool are unequal
• Drill deformed
• Use new drill
The drill chuck or the taper
mandrel cannot be inserted.
• Dirt, grease or oil on the taper inside
of the drill chuck or on the taper sur-
face of the drill spindle
• Positioning the follower in the drill
spindle is not considered
• Clean surfaces well
• Keep surfaces free of grease
Drilling feed does not operate • Feather key sheared from the shaft.
• Transmission for manual feed worn.
• Replace key.
• Replace transmission.
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