Milwaukee DD 3-152, Original Instructions Manual, Page: 17 / 127

14
English
TROUBLESHOOTING
Vibration
1. Stop drilling.
2. Turn core drill off .
3. Always disconnect the plug from the socket before carrying out
any work on the machine.
4. Check for loose nuts and bolts. Tighten if required.
5. Check for excessive core drill bit runout. Replace if required. If
vibration continues to occur, remove the core and loose material.
If vibration continues to occur after attempting these measures,
return the rig to the nearest MILWAUKEE service facility.
Core drill bit Binding
Core drill bit binding is caused by one of two things: a dull (glazed)
core drill bit or a poorly stabilized stand. Causes of core drill bit
glazing:
• Wrong RPM for core drill bit diameter
• High feed pressure
• Low feed pressure
• High steel content in work surface
• Large, hard aggregate
• Too much water
• Low motor power
A sharp core drill bit typically has good diamond exposure and will
cut/grind almost anything in its path, including embedded steel.
MAINTENANCE
Always disconnect the plug from the socket before carrying out any
work on the machine.
If the replacement of the supply cord is necessary, this has to be
done by the manufacturer or his agent in order to avoid a safety
hazard.
The ventilation slots of the machine must be kept clear at all times.
Use only Milwaukee accessories and Milwaukee spare parts. Should
components need to be replaced which have not been described,
please contact one of our Milwaukee service agents (see our list of
guarantee/service addresses).
If needed, an exploded view of the tool can be ordered. Please
state the Article No. as well as the machine type printed on
the label and order the drawing at your local service agents or
directly at: Techtronic Industries GmbH, Max-Eyth-Straße 10,
71364 Winnenden, Germany.
EC-DECLARATION OF CONFORMITY
We declare under our sole responsibility that the product described
under “Technical Data” fulfills all the relevant provisions of the
directives
2011/65/EU (RoHS)
2006/42/EC
2014/30/EU
and the following harmonized standards have been used
EN 62841-1:2015
EN 62841-2-1:2018+A11:2019
EN 55014-1:2017+A11:2020
EN 55014-2:2015
EN 61000-3-2:2014
EN 61000-3-3:2013
EN IEC 63000:2018
Winnenden, 2020-11-17
Alexander Krug / Managing Director
Authorized to compile the technical file
Techtronic Industries GmbH
Max-Eyth-Straße 10, 71364 Winnenden, Germany
GB-DECLARATION OF CONFORMITY
We declare as the manufacturer under our sole responsibility that
the product described under „Technical Data“ fulfills all the relevant
provisions of the following Regulations
S.I. 2012/3032 (as amended), S.I. 2008/1597 (as amended),
S.I. 2016/1091 (as amended) and that the following designated
standards have been used:
BS EN 62841-1:2015
BS EN 62841-2-1:2018+A11:2019
BS EN 55014-1:2017+A11:2020
BS EN 55014-2:2015
BS EN 61000-3-2:2014
BS EN 61000-3-3:2013
BS EN IEC 63000:2018
Winnenden, 2020-11-17
Alexander Krug / Managing Director
Authorized to compile the technical file
Techtronic Industries GmbH
Max-Eyth-Straße 10, 71364 Winnenden, Germany
GB