This document provides operating instructions for the Hilti VC 20 and VC 40 wet/dry industrial vacuum cleaners, designed for universal commercial use. These models are suitable for both wet and dry applications, but not for cleaning persons or animals, or for underwater use.
Function Description:
The Hilti VC 20 and VC 40 are industrial wet/dry vacuum cleaners equipped with an automatic filter cleaning system. This system removes most of the dust adhering to the filter element, activating automatically when the vacuum cleaner is switched on. It can also be manually switched on or off via a dedicated button. The filter cleaning system functions only when a suction hose is connected.
These vacuum cleaners are designed for collecting large quantities of dust from Hilti diamond grinders, cutters, rotary hammers, and core drilling machines using dry-cutting core bits. They can also pick up drilling slurry (mineral materials) from Hilti diamond core bits or saws, and other liquids up to 60°C (140°F). Additionally, they are suitable for wet and/or dry cleaning of wall and floor surfaces.
For UM and UME vacuum cleaners, an audible warning tone is emitted if the air speed in the hose drops below 20 m/s, indicating reduced suction power, often due to a full dust bag or clogged filter. The hose diameter setting must be correctly adjusted to ensure this warning functions properly.
Important Technical Specifications:
The VC 20 and VC 40 models have varying specifications depending on the exact variant (U, UL, UM, UME) and power input (950 W, 1100 W, 1200 W).
VC 20:
- Dimensions (L x W x H): 505 x 380 x 500 mm
- Weight (EPTA procedure 01): 13.0 kg
- Container capacity: 21 l
- Effective dust capacity: 23 kg
- Water capacity: 13.5 l
- Operating temperature: -10 °C to 40 °C
- Automatic filter cleaning: 15 s
- Protection class: I (IP X4)
- AC frequency: 50 Hz ... 60 Hz
- Rated power input: 950 W (VC 20-U), 1100 W (VC 20-U, UL, UM, UME), 1200 W (VC 20-U, UL, UM, UME)
- Maximum load on built-in power outlet: Up to 2400 W depending on voltage and region.
- Maximum volumetric flow rate (air):
- 950 W: 68 l/s (VC 20-U)
- 1100 W: 68 l/s (VC 20-U, UL, UM, UME) or 138 m³/h (VC 20-UL, UM, UME)
- 1200 W: 74 l/s (VC 20-U) or 150 m³/h (VC 20-UL, UM, UME)
- Maximum partial vacuum:
- 950 W: 235 hPa (VC 20-U)
- 1100 W: 230 hPa (VC 20-U) or 209 hPa (VC 20-UL, UM, UME)
- 1200 W: 253 hPa (VC 20-U, UL, UM, UME)
- Emission sound pressure level (LPA): 73 dB(A)
- Uncertainty for sound pressure level (KPA): 2.5 dB(A)
- Vibration emission value: < 2.5 m/s²
VC 40:
- Dimensions (L x W x H): 505 x 380 x 610 mm
- Weight (EPTA procedure 01): 14.7 kg
- Container capacity: 36 l
- Effective dust capacity: 40 kg
- Water capacity: 25 l
- Operating temperature: -10 °C to 40 °C
- Automatic filter cleaning: 15 s
- Protection class: I (IP X4)
- AC frequency: 50 Hz ... 60 Hz
- Rated power input: 950 W (VC 40-U), 1100 W (VC 40-U, UL, UM, UME), 1200 W (VC 40-U, UL, UM, UME)
- Maximum load on built-in power outlet: Up to 1800 W depending on voltage and region.
- Maximum volumetric flow rate (air):
- 950 W: 68 l/s (VC 40-U)
- 1100 W: 68 l/s (VC 40-U, UL, UM, UME) or 138 m³/h (VC 40-UL, UM, UME)
- 1200 W: 74 l/s (VC 40-U) or 150 m³/h (VC 40-UL, UM, UME)
- Maximum partial vacuum:
- 950 W: 235 hPa (VC 40-U)
- 1100 W: 230 hPa (VC 40-U) or 209 hPa (VC 40-UL, UM, UME)
- 1200 W: 253 hPa (VC 40-U, UL, UM, UME)
- Emission sound pressure level (LPA): 73 dB(A)
- Uncertainty for sound pressure level (KPA): 2.5 dB(A)
- Vibration emission value: < 2.5 m/s²
Usage Features:
- Power Outlet for Electric Tools: The vacuum cleaner includes an electric tool power outlet (1) for direct connection of electric tools. This allows the vacuum cleaner to operate in "Auto" mode, starting automatically when the connected tool is switched on and continuing to run for a short period after the tool is switched off to clear the suction hose.
- Automatic Filter Cleaning: The "Automatic filter cleaning ON/OFF" button (3) and status indicator (4) manage the filter cleaning system, which uses blasts of air to clean the filter element.
- Control Switch: A control switch (5) allows selection of "ON," "OFF," or "Auto" modes.
- Hose Diameter Setting (UM/UME models): For UM and UME models, a switch allows adjustment of the hose diameter setting to match the suction hose in use, ensuring correct warning tone emission and optimal performance. For Hilti hollow drill bit systems, the smallest hose diameter setting should be used.
- Dust Collection: The vacuum cleaners can be used with various dust bags: PE synthetic dust bags for mineral materials (wet and dry), paper dust bags for wood, and different filter types (dry, universal, performance) depending on the application and dust class (L or M).
- Mobility: Equipped with wheels (8) and a grip (11), the vacuum cleaner is designed for easy movement. Wheel brakes should be engaged to secure the unit during operation.
- Safety Features: Includes warnings for hot surfaces and restrictions against crane transport. Special stickers indicate suitability for hazardous dusts (Class L or M) and require trained personnel and protective equipment for emptying and maintenance.
- Cord Management: Features a supply cord hook (12) for organized storage.
Maintenance Features:
- Filter Element Replacement: The filter element should be replaced at least every six months, or more frequently with intensive use. The process involves opening catches, lifting the suction head, removing the old filter, cleaning the sealing surface, and fitting a new filter.
- Container Cleaning: The waste material container (7) can be easily emptied by opening catches, lifting the suction head, and tipping out contents. For wet applications, the container should be rinsed with water, and electrodes cleaned with a brush.
- General Cleaning: The appliance, especially grip surfaces, should be kept clean and free from oil and grease. Outer surfaces can be cleaned with a damp cloth. Air vents should be cleaned with a dry brush.
- Container Level Monitoring System: This system should be checked regularly, and its cut-out contacts cleaned with a brush if necessary.
- Hose Inlet Socket Cap (UM/UME models): For UM and UME models, the hose inlet socket should be closed with a cap during transport and when not in use to prevent hazardous material escape.
- Regular Inspections: For UL, UM, and UME vacuum cleaners, a technical inspection by Hilti Service or a trained person is recommended at least once a year to check for filter damage, air leakage, and proper function of controlling devices.
- Disposal: Hilti products are recyclable. Old tools and appliances should be returned to Hilti for environmentally compatible recycling. Drilling slurry and dust should be disposed of according to local regulations, with pretreatment for slurry (settling, neutralization) before discharge.
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