Malfunctions
Version 2.1.2 2018-09-13
Page 71
Translation of the original instructions
B17Pro | B23Pro | B26Pro | B33Pro
GB
B17_
B23_
B26_
B33_
GB_
6
.f
m
OPTIMUM
M A S C H I N E N - G E R M A N Y
®
8
Malfunctions
8.1
Malfunctions on the drilling machine
Malfunction
Cause/
possible effects
Solution
Release of the FI protected
switch
•
an unusual
FI protective switch is being used
•
"Electrical connection“ on page
Noise during work.
•
Spindle turning dry
•
Tool blunt or incorrectly secured
•
Grease spindle
•
Use new tool and check securing
(fixed setting of the bit, bit holder and
chuck).
Drill bit "burnt“
•
Incorrect speed
•
Chips do not come out of the bore
hole.
•
Blunt drill bit.
•
Operating without cooling agent.
•
Select another rate, feed too high.
•
Retract the drill bit from the bore hole
more often.
•
Sharpen the drill bit or insert new drill
bit.
•
Use cooling agent
Drill point runs off, drilled hole
is not circular.
•
Hard fibre in wood or length of the
cutting twist or the drill bit is uneven.
•
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 bit runs unround or wob-
bles.
•
Drill bit is bent.
•
Worn bearing on boring head.
•
Drill is not correctly clamped.
•
Drill chuck defective
•
Replace drill bit
•
Have the bearing on the boring head
replaced.
•
Set the correct tension to the drill bit.
•
Exchange the drill chuck.
The drill chuck or the taper
mandril 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 the surfaces accurately
•
Keep surfaces free of grease
Motor does not start
•
Motor is wrongly connected
•
Defective fuse
•
Have it checked by authorised per-
sonnel.
Motor is overheating and there
is no power
•
Motor overloaded
•
Too low mains voltage
•
Motor is wrongly connected
•
Disconnect immediately and have
the equipment checked by a trained
specialist
Precision of the work deficient
•
Heavy and unbalanced or deformed
work-piece
•
Inexact horizontal position of the
work-piece holder
•
Balance the piece statically and
secure without straining
•
Adjust workpiece-holder
Drilling spindle sleeve does not
return to its initial position
•
Spindle return spring
•
