Operation - Makita DHR280 Betriebsanleitung

Dust cup set
Optional accessory
Before installing the dust cup set, remove the bit from the tool if
installed.
Install the dust cup set on the tool so that the
dust cup is aligned with the groove in the tool.
► Fig.26:
1. symbol 2. Groove
NOTE: If you connect a vacuum cleaner to the dust cup set,
remove the dust cap before connecting it.
► Fig.27:
1. Dust cap
To remove the dust cup set, remove the bit while pulling the
chuck cover in the direction of the arrow. ► Fig.28:
Chuck cover
Hold the root of dust cup and pull it out.
► Fig.29
NOTE: If the cap comes off from the dust cup, attach it with its
printed side facing up so that groove on the cap fits in the
inside periphery of the attachment.
► Fig.30

OPERATION

CAUTION:
Always use the side grip (auxiliary
handle) and firmly hold the tool by both side grip
and switch handle during operations.
CAUTION:
Always make sure that the
workpiece is secured before operation.
CAUTION:
Do not pull the tool out forcibly
even the bit gets stuck. Loss of control may
cause injury.
CAUTION:
The dust collection system is
intended for drilling in concrete only. Do not use
the dust collection system for drilling in metal or
wood.
CAUTION:
When using the tool with the dust
collection system, be sure to attach the filter to
the dust collection system to prevent dust
inhalation.
CAUTION:
Before using the dust collection
system, check that the filter is not damaged.
Failure to do so may cause dust inhalation.
CAUTION:
The dust collection system
collects the generated dust at a considerable rate,
but not all dust can be collected.
NOTICE:
Do not use the dust collection system for core
drilling or chiseling.
NOTICE:
Do not use the dust collection system for
drilling in wet concrete or use this system in wet
environment. Failure to do so may cause malfunction.
NOTE: If the battery cartridge is in low
temperature, the tool's capability may not
be fully obtained. In this case, warm up the
battery cartridge by using the tool with no
load for a while to fully obtain the tool's
capability.
symbol on the
► Fig.31
Hammer drilling operation
twisting force exerted on the tool/drill bit at the time of
hole break-through, when the hole becomes clogged
with chips and particles, or when striking reinforcing
rods embedded in the concrete. Always use the side
1. Bit 2.
grip (auxiliary handle) and firmly hold the tool by
both side grip and switch handle during
operations. Failure to do so may result in the loss of
control of the tool and potentially severe injury.
Set the action mode changing knob to the
symbol. Position the drill bit at the desired
location for the hole, then pull the switch
trigger. Do not force the tool. Light pressure
gives best results. Keep the tool in position
and prevent it from slipping away from the
hole.
Do not apply more pressure when the hole
becomes clogged with chips or particles.
Instead, run the tool at an idle, then remove
the drill bit partially from the hole. By
repeating this several times, the hole will be
cleaned out and normal drilling may be
resumed.
NOTE: Eccentricity in the drill bit rotation
may occur while operating the tool with no
load. The tool automatically centers itself
during operation. This does not affect the
drilling precision.
Chipping/Scaling/Demolition
Set the action mode changing knob to the
symbol. Hold the tool firmly with both hands.
Turn the tool on and apply slight pressure on
the tool so that the tool will not bounce
around, uncontrolled.
Pressing very hard on the tool will not
increase the efficiency. ► Fig.32
22 ENGLISH
CAUTION:
There is tremendous and sudden