Transport And Storage - Hilti WFE 450-E Original Bedienungsanleitung

4. Use a suitable tool to release the three securing screws.
5. Remove the backing pad.
6. Clean and check the backing pad brake.
➥ If necessary, replace the backing pad brake.
7. Place the new backing pad in position.
8. Hold the backing pad and tighten the three securing screws.
9. Check that the backing pad is installed correctly and not tilted.
10. Using the positioning guide to reinstall the sanding pad.
6.2 Backing pad brake
▶ A steady increase in idling speed over time is indicative of wear of the brake ring of the backing pad
brake. Change the brake ring.
6.2.1 Changing the brake ring of the backing pad brake
1. Disconnect the supply cord plug from the power outlet.
2. Remove the backing pad.
3. Remove the old brake ring from its seat on the power-tool housing.
4. Press the new brake ring into the recesses so that the four housing screws are correctly aligned. Make
sure that the snap hooks engage.
5. Install the backing pad.
7

Transport and storage

• Do not transport electric tools with accessory tools fitted.
• Always unplug the supply cord before storing an electric tool or appliance.
• Store tools and appliances in a dry place where they cannot be accessed by children or unauthorized
persons.
• Check electric tools or appliances for damage after long periods of transport or storage.
8 Troubleshooting
If the trouble you are experiencing is not listed in this table or you are unable to remedy the problem by
yourself, please contact Hilti Service.
8.1 Troubleshooting
Trouble or fault
Power tool does not start.
The power tool does not de-
velop full power.
No suction or reduced suc-
tion.
*326041*
Printed: 22.10.2018 | Doc-Nr: PUB / 5131001 / 000 / 02
Possible cause
Interruption in the electric supply
The supply cord or plug is defec-
tive.
Electronic fault
The extension cord conductor
cross section (gauge) is inade-
quate.
Wrong speed.
Sanding disc incorrectly
positioned.
326041
9
Action to be taken
▶ Plug in another electric tool or
appliance and check whether it
works.
▶ Have the parts checked by a
trained electrical specialist and
replaced if necessary.
▶ Have checked, and if necessary
replaced, by a trained electrical
specialist.
▶ Use an extension cord with
an adequate conductor cross
section.
▶ Turn the speed regulator to a
speed between 1 (low) and 6
(high).
▶ Remove the sanding disc and
reposition it correctly, with the
openings aligned with the dust-
extraction holes in the backing
pad.
English 17