Malfunctions
Version 1.1.3 - 2020-07-21
88
Translation of the original instructions
B34H | B34HV
GB
B34H_B
34HV_
GB_
7
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m
9
Malfunctions
Malfunction
Cause/
possible effects
Solution
FI protective
switch on machines with
frequency converter triggers.
•
an unusual
FI protective switch is being used
•
Motor is getting hot
•
Wrong electrical connection of 400
V machines
Noise during work.
•
Spindle is too little lubricated
•
Tool is blunt or wrongly clamped
•
Lubricate spindle (only possible
when disassembled)
•
Use new tool and check tension
(fixed setting of the bit, drill chuck
and taper mandril.
Drill "burns"
•
Drill speed too high /feed too high
•
Chips do not come out of the drill
hole
•
Drill blunt
•
No or too little cooling
•
Select another speed
•
Extract drill more often during work
•
Sharpen or
use new drill
•
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
Drill is defective
•
No base / support used.
•
Use support and clamp it with the
workpiece
Drill is running non-round or
shaking
•
Drill deformed
•
Worn out spindle bearings
•
Drill is not correctly clamped.
•
Drill chuck defective
•
Use new drill
•
Have the spindle bearings replaced
•
Correctly clamp drill
•
Replace the drill chuck
It is not possible to insert the drill
chuck or the taper mandrel
•
Dirt, grease or oil on the taper
inside of the drill chuck or on the
taper surface of the drill spindle
•
Clean surfaces well
•
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
•
Reduce feed rate
Disconnect immediately and have it
checked by authorized personnel
•
Have it checked by authorised per-
sonnel
Precision of the work deficient
•
Irregularly heavy or tensed
workpiece
•
Inexact horizontal position of the
part holder
•
Balance the piece statically and
secure without straining
•
Adjust part-holder
Drilling spindle sleeve does not
return to its initial position
•
Spindle return spring does not work
•
Locking bolt inserted
•
Check spindle return spring, replace
it, if necessary
•
Pull out locking pin
The drilling spindle cannot be
moved downwards.
•
Locking bolt inserted
•
Drill depth adjustment no released
•
Pull out locking pin
•
Release drill depth adjustment
