Operational Cautions; Maintenance And Inspection - Hitachi CG 18DSDL Handling Instructions Manual

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OPERATIONAL CAUTIONS

Continuous work
This tool comes with an over-heat protection circuit that protects the
electronic parts that control the rechargeable battery. In continuous trimming
work, tool temperature will rise and eventually trigger the over-heat protection
circuit, which will shut down the tool.
If this happens, let the tool cool for a length of time. When the temperature
drops, it will again become possible to use the tool. When the rechargeable
battery has to be exchanged during continuous operation, let the tool rest for
about 15 minutes.
Overload Protection
This tool comes with an overload protection circuit to protect the electronic
parts controlling the tool. In continuous overload during trimming work
(locking the nylon head, etc.), the overload protection circuit shuts down the
motor. If this happens, turn OFF the power, and then resolve the problem
causing the overload.
The power lamp blinks if the lever is pressed after the motor has stopped
(see page 40, "ABOUT POWER LAMP"). The power automatically turns
OFF if the power lamp blinks longer than 5 seconds. If this happens, resolve
the problem causing the overload, and then switch the power button ON to
resume using the tool.

MAINTENANCE AND INSPECTION

CAUTION
Pull out battery before doing any inspection or maintenance.
1. Checking the condition of the nylon head
The nylon head should be checked regularly. If worn or broken nylon
head can slip or decrease the effi ciency of the motor and burn it out.
Replace worn nylon head with new ones.
CAUTION
If you use a nylon head of which point is worn or broken, it will be
dangerous. So replace it with a new one.
2. Check the Screws
Loose screws are dangerous. Regularly inspect them and make sure
they are tight.
CAUTION
Using this power tool with loosened screws is extremely
dangerous.
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