Hilti 3497777 Use and Care Manual download pdf (Page 16)

Never operate the power tool when the ventilation

slots are blocked. Clean the ventilation slots carefully

using a dry brush. Do not permit foreign objects to

enter the interior of the power tool. Clean the outside

of the power tool at regular intervals with a slightly

damp cloth. Do not use a spray, steam pressure

cleaning equipment or running water for cleaning.

This may negatively affect the electrical safety of the

power tool.

9.3 Care of the Li-ion battery

Avoid entrance of moisture.

Charge the battery fully before using it for the first

time.

In order to achieve maximum battery life, stop dis-

charging the battery as soon as a significant drop in

performance is noticed.

NOTE

If use of the power tool continues, further battery

discharge will be stopped automatically before the

battery cells suffer damage.

Charge the battery with the Hilti charger approved for

use with Li-ion batteries.

NOTE

- A conditioning charge (as is required with NiCd or

NiMH batteries) is not necessary.

- Interruption of the charging procedure has no neg-

ative effect on battery life.

- Charging can be started at any time with no negative

effect on battery life. There is no memory effect (as

with NiCd or NiMH batteries).

- For best results, batteries should be stored fully

charged in a cool dry place. Avoid charging the battery

in places subject to high ambient temperatures (e.g.

at a window) as this has an adverse effect on battery

life and increases the rate of self-discharge.

- If the battery no longer reaches full charge, it may

have lost capacity due to aging or overstressing. It

is possible to continue working with a battery in this

condition but it should be replaced in good time.

9.4 Maintenance

WARNING

Repairs to the electrical section of the power tool

may be carried out only by trained electrical spe-

cialists.

Check all external parts of the power tool for damage

at regular intervals and check that all controls operate

faultlessly. Do not operate the power tool if parts

are damaged or when the controls do not function

faultlessly. If necessary, the power tool should be

repaired by Hilti Service.

9.5 Checking the power tool after care and

maintenance

After carrying out care and maintenance work on

the power tool, check that all protective and safety

devices are fitted and that they function faultlessly.

10. Troubleshooting

Fault Possible cause Remedy

The power tool doesn’t run.

The battery is discharged or fitted

incorrectly.

The battery must be heard to engage

with a double click or, respectively,

needs to be charged.

Electrical fault. Remove the battery from the power

tool and contact Hilti Service.

The power tool switches itself

off and all 4 LEDs on the

battery blink.

The overload cut-out has been

activated.

Release the control switch, reduce

the load on the power tool and then

press the switch again.

The control switch can’t be

pressed, i.e. the switch is

locked.

The forward / reverse switch is in

the middle position (safety lock

engaged).

Push the forward / reverse switch

to the left or right.

The power tool runs but the

screw cannot be driven.

The forward / reverse switch is set

to the wrong direction of rotation.

Push the forward / reverse switch

to the left.

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