Makita DHR282ZJU - Инструкция по эксплуатации - Страница 18

18 ENGLISH

Hammer drilling operation

CAUTION:

 There is tremendous and sudden 

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 

grip (auxiliary handle) and firmly hold the tool by 

both side grip and switch handle during opera

-

tions.

 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 auto-

matically 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

Drilling in wood or metal

CAUTION:

Hold the tool firmly and exert care 

when the drill bit begins to break through the 

workpiece.

 There is a tremendous force exerted on 

the tool/drill bit at the time of hole break through.

CAUTION:

A stuck drill bit can be removed 

simply by setting the reversing switch to reverse 

rotation in order to back out. However, the tool 

may back out abruptly if you do not hold it firmly.

CAUTION:

Always secure workpieces in a 

vise or similar hold-down device.

NOTICE:

Never use “rotation with hammering” 

when the drill chuck is installed on the tool.

 The 

drill chuck may be damaged. 

Also, the drill chuck will come off when reversing the 

tool.

NOTICE:

Pressing excessively on the tool will 

not speed up the drilling.

 In fact, this excessive 

pressure will only serve to damage the tip of your drill 

bit, decrease the tool performance and shorten the 

service life of the tool.

Set the action mode changing knob to the   symbol.

For DHR280/DHR282

Optional accessory

Attach the chuck adapter to a keyless drill chuck to 

which 1/2"-20 size screw can be installed, and then 

install them to the tool. When installing it, refer to the 

section “Installing or removing drill bit”.

► 

Fig.33:

1.

 Keyless drill chuck 

2.

 Chuck adapter

For DHR281/DHR283

Use the quick change drill chuck as standard equip-

ment. When installing it, refer to "changing the quick 

change chuck for SDS-plus".

Hold the ring and turn the sleeve counterclockwise to 

open the chuck jaws. Place the bit in the chuck as far as 

it will go. Hold the ring firmly and turn the sleeve clock

-

wise to tighten the chuck.

► 

Fig.34:

1.

 Sleeve 

2.

 Ring

To remove the bit, hold the ring and turn the sleeve 

counterclockwise.

Diamond core drilling

NOTICE:

If performing diamond core drilling 

operations using “rotation with hammering” 

action, the diamond core bit may be damaged.

When performing diamond core drilling operations, 
always set the change lever to the   position to use 

"rotation only" action.

Beating dust on the filter

Optional accessory

CAUTION:

Do not turn the dial on the dust 

case while the dust case is removed from the 

dust collection system.

 Doing so may cause dust 

inhalation.

CAUTION:

Always switch off the tool when 

turning the dial on the dust case.

 Turning the dial 

while the tool is running may result in the loss of 

control of the tool.

By beating the dust on the filter inside the dust case, 

you can keep the vacuum efficiency and also reduce 

the number of times to dispose of the dust.

Turn the dial on the dust case three times after col-

lecting every 50,000 mm

3

 of dust or when you feel the 

vacuum performance declined.

NOTE:

 50,000 mm

3

 of dust equivalents to drilling 10 

holes of ø10 mm and 65 mm depth (14 holes of ø3/8″ 

and 2″ depth).

► 

Fig.35:

1.

 Dust case 

2.

 Dial