Makita GA4590 Manuel D'instruction page 7

FUNCTIONAL
DESCRIPTION
CAUTION:
Always be sure that the tool is
switched off and unplugged before adjusting or
checking function on the tool.
Tool protection system
The tool is equipped with a tool protection system. This
system automatically reduces or cuts off power to the
motor to extend tool life. The tool will automatically
reduce power or stop during operation if the tool is
placed under one of the following conditions:
Overload protection
When the tool is operated in a manner that causes it
to draw an abnormally high current, the tool reduces
power automatically without any indication. In this
situation, remove the cause of the overload so that the
rotation speed recovered.
Overheat protection
Country specific
When the tool is overheated, the tool stops automat-
ically and the indication lamp blinks in red. In this
situation, let the tool cool down. You can turn the tool
on again after the lamp changes the color from red to
green.
Indication lamp
1
Fig.1
► 1. Indication lamp
The indication lamp lights up green when the tool is
plugged.
If the indication lamp blinks in red, the overheat pro-
tection, Active Feedback sensing Technology, or the
accidental re-start preventive function stops operation.
In this situation, switch off the tool. Then, turn the tool
on to restart.
If the indication lamp lights up in red after switch off the
tool, the tool is overheated. In this situation, cool down
the tool and wait until the indication lamp lights up in
green.
Speed adjusting dial
Only for model GA4590 / GA4591 / GA5090 / GA5091
CAUTION:
If the tool is operated continuously
at low speeds for a long time, the motor will get
overloaded and heated up.
CAUTION:
The speed adjusting dial can be turned
only as far as 5 and back to 1. Do not force it past 5 or
1, or the speed adjusting function may no longer work.
The rotating speed can be changed by turning the speed adjust-
ing dial to a given number setting from 1 to 5. Higher speed is
obtained when the dial is turned in the direction of number 5. And
lower speed is obtained when it is turned in the direction of number
1. Refer to the below table for the relationship between the number
settings on the dial and the approximate rotating speed.
Number
1
2
3
4
5
Fig.2
► 1. Speed adjusting dial
Shaft lock
WARNING:
Never actuate the shaft lock when the
spindle is moving. It may cause serious injury or the tool damage.
Press the shaft lock to prevent spindle rotation when
installing or removing accessories.
1
Fig.3
► 1. Shaft lock
7 ENGLISH
Rated speed
-1
2,800 min (/min)
-1
4,500 min (/min)
-1
6,500 min (/min)
-1
8,000 min (/min)
-1
11,500 min (/min)
1