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Electric Core Drill with Base
Troubleshooting
Problem
Possible Cause
Overload protection
A. Bit has insufficient cutting clearance.
tripping
B. Feed rate too high.
Low penetration rate
A. Drilling rebar (steel) - fluid not muddy.
Evidence of steel cuttings.
B. Bit worn, damaged, bent.
C. Insufficient load on bit.
D. Loose material at bottom of hole.
E. Insufficient fluid, causing cuttings to
obstruct cutters.
F. Bit has insufficient cutting clearance.
Bits wearing rapidly
A. Insufficient fluid, causing cuttings to
obstruct cutters.
B. Bit or drill not "true".
Deep grooves in hole
A. Bit or drill not "true".
B. Bit has insufficient cutting clearance.
Bit jamming
A. Tool not held straight during drilling.
B. Bit has insufficient cutting clearance.
C. Bit or drill not "true".
D. Feed rate too high.
A. Bit or drill not "true".
Bit chattering
Excessive sparking
Motor brushes installed incorrectly or
from motor
require replacement.
Water leaking from
Seals no longer serviceable.
gearbox
Specifications
Voltage
Bit Thread Adaptor Size
Hose Adaptor Size
Drilling Diameter Range
Material Suitability
E&OE
Possible Solution / Recommendations
A. Replace bit.
B. Reduce load.
A. Reduce feed rate while cutting through steel rebar.
B. Replace bit.
C. Increase bit load.
D. Break core, clean bottom of hole or drill with increased bit
load.
E. Increase water flow rate. Clean bit face by drilling into a
concrete block.
F. Replace bit.
A. Increase water flow rate. Clean bit face by drilling into a
concrete block.
B. Replace bit if bent. Ensure to drill straight.
A. Replace bit if bent.
B. Replace bit.
A. Be sure to hold the tool straight and maintain steady, but
not excessive, pressure.
B. Replace bit.
C. Replace bit if bent. Ensure to drill straight.
D. Reduce load.
A. Replace bit if bent. Ensure to drill straight.
Check
carbon brushes
Have the tool inspected / repaired at an authorised service
centre.
240VAC / 50Hz
1 ¼" UNC
10mm
20 to 152mm
Masonry and concrete
©2017 Bäumr-AG
are serviceable and correctly installed.
9
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