Contents
KEY TO SYMBOLS
Symbols on the machine: .............................................. 2
Symbols in the operator's manual: ................................ 2
CONTENTS
Contents ....................................................................... 3
PRESENTATION
DM 280 ......................................................................... 4
WHAT IS WHAT?
What is what on the drilling machine? .......................... 5
SAFETY INSTRUCTIONS
Steps before using a new drilling machine ................... 6
Personal protective equipment ...................................... 6
General safety precautions ........................................... 7
General working instructions ........................................ 8
Machine's safety equipment ......................................... 9
STARTING AND STOPPING
Before starting .............................................................. 10
Starting ......................................................................... 10
Stopping ........................................................................ 10
MAINTENANCE
General ......................................................................... 11
Changing the drill bit ..................................................... 11
Cleaning ........................................................................ 11
Electrical Feed .............................................................. 11
Changing the gearbox oil .............................................. 11
Replacing the carbon brushes ...................................... 12
Replacing the seal retainer ........................................... 12
Daily maintenance ........................................................ 12
Repairs ......................................................................... 12
TECHNICAL DATA
US WARRANTY STATEMENT
WARRANTY POLICY ................................................... 14
EQUIPMENT ................................................................. 14
WIRING DIAGRAM
CONTENTS
Note the following before starting:
!
WARNING! Cutting, especially when DRY
cutting, generates dust that comes from the
material being cut, which frequently
contains silica. Silica is a basic component
of sand, quartz, brick clay, granite and
numerous other minerals and rocks.
Exposure to excessive amount of such dust
can cause:
Respiratory disease (affecting your ability to
breath), including chronic bronchitis,
silicosis and pulmonary fibrosis from
exposure to silica. These diseases may be
fatal;
Skin irritation and rash.
Cancer according to NTP* and IARC*
*/ National Toxicology Program, International
Agency for Resaearch on Cancer
Take precautionary steps:
Avoid inhalation of and skin contact with
dust, mist and fumes.
Wear and ensure that all bystanders wear
appropriate respiratory protection such as
dust masks designed to filter out
microscopic particles. (See OSHA 29 CFR
Part 1910.1200)
Wet cut when feasible, to minimize dust.
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