Hilti 3493740 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.

8.3 Service indicator

NOTE

The power tool is equipped with a service indicator.

Indicator

Constant red light End of service interval - servicing is due. After the

lamp lights for the first time, the power tool may

continue to be used for several hours before the

automatic cut-out is activated. To ensure that the

power tool is always ready for use, it should be

returned to Hilti for servicing in good time.

Blinking red light

See section “Troubleshooting”.

8.4 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.

8.5 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.

9. Troubleshooting

Fault Possible cause Remedy

The power tool doesn’t start.

Interruption in the electric supply. Plug in another electric appliance

and check whether it works.

The supply cord or plug is defective.

Have it checked by a trained

electrical specialist and replaced if

necessary.

Generator with sleep mode.

Apply a load to the generator by

connecting another appliance (e.g.

a lamp). Subsequently switch the

power tool off and on again.

Other electrical fault.

Have it checked by a trained

electrical specialist.

The electronic restart interlock is

activated after an interruption in the

electric supply.

Switch the power tool off and on

again.

The control switch is defective.

Have it checked by a trained

electrical specialist and replaced if

necessary.

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