Using Extension Cords - Hilti VC 20‑U Manual Original

The operating personnel must be instructed on how to use the appliance prior to beginning work,
they must be informed of any hazards associated with the materials to be picked up and they
must be familiar with the correct procedures for safe disposal of these materials.
Underwater use is not permissible.
Use of the appliance to clean down persons or animals is not permissible.
Use an antistatic suction hose in order to avoid electrostatic effects.
This appliance is suitable for commercial use, e.g. in hotels, schools, hospitals, factories, shops,
offices and by rental companies.
Working on materials hazardous to the health (e.g. asbestos) is not permissible.
The working environment may be as follows: construction site, workshop, renovation, conversion
or new construction.
Observe the information printed in the operating instructions concerning operation, care and
maintenance.
To avoid the risk of injury, use only genuine Hilti tools and accessories.
The appliance and its ancillary equipment may present hazards when used incorrectly by untrained
personnel or when used not as directed.
Modification of the appliance or tampering with its parts is not permissible.
2.2 The items supplied as standard include:
1 Appliance with filter element
1 Suction hose complete with hose
connector, hose sleeve and tapered
adapter
1 PE VC 20 plastic dust bag
1 Paper dust bag VC 40
1 Operating instructions

2.3 Using extension cords

Use only extension cords of a type approved for the application and with conductors of adequate
gauge. The appliance may otherwise lose performance and the extension cord may overheat.
Check the extension cord for damage at regular intervals. Replace damaged extension cords.
Recommended minimum cross section and max. cord length for the VC 20/40:
Conductor cross section
Mains voltage 110-120 V
Use only extension cords equipped with an earth/ground conductor.
2.4 Using extension cords outdoors
When working outdoors, use only extension cords that are approved and correspondingly marked
for this application.
2.5 Using a generator or transformer
This appliance may be powered by a generator or transformer when the following conditions
are fulfilled: The unit must provide a power output in watts of at least twice the maximum value
printed on the type identification plate on the power tool or appliance. The operating voltage
must remain within +5% and -15% of the rated voltage at all times, frequency must be in the 50
– 60 Hz range and never above 65 Hz, and the unit must be equipped with automatic voltage
regulation and starting boost.
12 AWG 14 AWG
150 ft 100 ft
en
16 AWG
50 ft
3