Malfunctions
Version 1.0.2 - 2020-07-0730 Translation of original instructions
DP26
EN
DP26_GB.fm
5.3 Repair
5.3.1 Customer service technician
For any repair work request the assistance of an authorised customer service technician. Con-
tact your specialist dealer if you do not have customer service's information or contact Stürmer
Maschinen GmbH in Germany who can provide you with a specialist dealer's contact informa-
tion. Optionally, the company Stürmer Maschinen GmbH; Dr.-Robert-Pfleger-Str. 26
96103 Hallstadt; can provide a customer service technician, however, the request for a cus-
tomer service technician can only be made via your specialist dealer.
If the repairs are carried out by qualified technical personnel, they must follow the indications
given in these operating instructions.
Optimum Maschinen Germany GmbH accepts no liability nor does it guarantee against damage
and operating malfunctions resulting from failure to observe these operating instructions.
For repairs, only use
faultless and suitable tools,
original parts or parts from series expressly authorised by Optimum Maschinen Germany
GmbH.
6 Malfunctions
6.1 Drilling machine malfunctions
Malfunction
Cause/
possible effects
Solution
Noise during work. • Spindle runs dry.
• Tool blunt or incorrectly clamped.
• Grease spindle
• Use new tool and check tension
(fixed setting of the bit, drill chuck
and taper mandril)
Bit „burnt“ • Incorrect speed
• Chips are not coming out of the
drilled hole.
• Blunt drill bit.
• Operating without cooling agent.
• Choose a different speed, excessive
feed.
• Retract the drill bit from the bore hole
more often.
• Sharpen the drill bit or insert new drill
bit.
• Use coolant.
Drill point runs off, drilled hole
is not circular.
• Hard fiber in the wood or length of
the cutting spirals and/or angle on
the drill unequal.
• Drill bit is bent.
• Use a new drill bit.
Drill bit defective. • No base / support used. • Place a piece of wood underneath
the workpiece and fasten this to the
workpiece.
Drill is running non-round or
shaking
• Drill bit is bent.
• Bearings worn down in the spindle
head.
• Drill is not correctly clamped.
• Drill chuck defective
• Replace drill bit
• Have the bearings in the spindle
head replaced.
• Clamp the drill bit properly.
• Replace the drill bit chuck.
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
• Clean surfaces well.
• Keep surfaces free from grease.
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