Troubleshooting - Hilti VC 20-U-Y Manual De Instrucciones

vents hazardous substances escaping into the
surrounding environment.
Vacuum off the outer surfaces of the appliance,
wipe it clean or seal it in suitable container
or material before removing it from an area
contaminated with hazardous substances. This
will help to avoid distribution of the hazardous
en
dust deposited on it.
When maintenance or repairs are carried out, all
contaminated parts which cannot be satisfact-
orily cleaned must be packed in impermeable
bags and disposed of in compliance with the
applicable disposal regulations.
A vacuum cleaner of the class M must be sub-
jected to a technical inspection by Hilti Service
or a trained person at least once a year to
check, for example, for damage to the filter,
air leakage, and to ensure correct operation of
controlling devices.
8.5 Care of the Li-ion battery
Avoid ingress of moisture.
Charge the battery fully before using it for the
first time.
In order to achieve maximum battery life, stop
discharging the battery as soon as a significant
drop in performance is noticed.
NOTE
If use of the tool continues, further battery dis-
charge will be stopped automatically before the
battery cells suffer damage. The tool switches
itself off.
Charge the battery with the Hilti charger ap-
proved for use with Li-ion batteries.
NOTE
- A conditioning charge (as is required with
NiCd batteries) is not necessary.

9 Troubleshooting

DANGER
In the event of a malfunction, disconnect the supply cord plug from the power outlet. Remove
any batteries from the battery compartment. The malfunction must be remedied before further
use of the appliance.
44
- Interruption of the charging procedure has no
negative 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 batteries).
- For best results, batteries should be stored
fully charged in a cool dry place. Storing the
battery in places subject to high ambient tem-
peratures (e.g. at a window) 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 over-
stressing. It is possible to continue working
with a battery in this condition but it should
be replaced in good time.
8.6 Maintenance
WARNING
Repairs to the electrical section of the ap-
pliance may be carried out only by trained
electrical specialists.
Check all external parts of the appliance for
damage at regular intervals and check that all
controls operate faultlessly. Do not operate the
appliance if parts are damaged or when the
controls do not function faultlessly. If neces-
sary, the appliance should be repaired by Hilti
Service.
8.7 Checking the appliance after care and
maintenance
After carrying out cleaning and maintenance,
check that the vacuum cleaner has been cor-
rectly reassembled and that it operates fault-
lessly.
Test each of the functions.