Introduction of Bosch Corded Dust Extractor GAS 35 L AFC

The Bosch Corded Dust Extractor GAS 35 L AFC is a high-performance solution designed for efficient dust management in both wet and dry applications. With a powerful 1,200 W motor, it features an automatic filter cleaning system that ensures consistent suction and optimal performance. This H-class certified extractor captures 99.995% of harmful dust particles, making it ideal for professional use. Priced at approximately $499, the GAS 35 L AFC combines reliability and safety for demanding work environments.

What's in the box

Safety information for vacuum cleaners

Read all the safety information and instructions. Failure to observe the safety information and follow instructions may result in electric shock, fire, and/or serious injury.
Save all warnings and instructions for future reference.

• This vacuum cleaner is not intended for use by children or persons with physical, sensory, or mental impairments. It should not be used by persons who have insufficient experience and knowledge. Otherwise, there is a risk of operating errors and injuries.
• Supervise children. This will ensure that children do not play with the vacuum cleaner.
  WARNING Never vacuum material that contains asbestos. Asbestos is a carcinogenic substance.
  WARNING Only use the vacuum cleaner if you have been adequately informed about the use of the equipment, the substances to be vacuumed and how to dispose of these safely. Thorough instruction on how to use the equipment prevents accidental misuse and injuries.
  WARNING The vacuum cleaner is suitable for vacuuming dry substances, and can also be used to vacuum liquids when taking appropriate measures. The penetration of liquids increases the risk of an electric shock.
• Do not use the vacuum cleaner to vacuum combustible or explosive liquids, such as petrol, oil, alcohol or solvents. Do not vacuum hot, burning or explosive dust. Do not operate the vacuum cleaner in areas subject to explosion hazards. Dust, vapors, and liquids can ignite or explode.
  WARNING Only use the socket for the purpose stipulated in the operating manual.
  WARNING If you notice a foam or water leak, switch off the vacuum cleaner immediately and empty the container. Otherwise, the vacuum cleaner can become damaged.
  switch off the vacuum cleaner immediately and empty the container. Otherwise, the vacuum cleaner can become damaged.
  NOTE: Clean the liquid fill level sensors regularly and check whether they are damaged. Otherwise, the equipment may not function properly.
• If operating the vacuum cleaner in a damp location is unavoidable, use a residual current device (RCD). The use of an RCD reduces the risk of electric shock.
• Always check the vacuum cleaner, cable, and plug before use. Do not use the vacuum cleaner if you discover any damage. Do not open the vacuum cleaner yourself. It should be repaired exclusively by a qualified professional using only genuine spare parts. Dam-aged vacuum cleaners, cables, and plugs increase the risk of electric shock.
• Do not crush the cable or run the device over it. Do not pull on the power cable to pull the plug out of the socket or to move the vacuum cleaner. Damaged cables increase the risk of an electric shock.
• Pull the plug out of the socket before cleaning or performing maintenance on the vacuum cleaner, making tool adjustments, changing accessories or putting away the vacuum cleaner. This safety measure prevents the vacuum cleaner from being started accidentally.
• Ensure that the workplace is well ventilated.
  The vacuum cleaner should be repaired exclusively by a qualified professional using only genuine spare parts. This will ensure that the safety of the vacuum cleaner is maintained.
  WARNING The dust extractor contains dust particles that pose a risk to health. Emptying and maintenance procedures, including the disposal of dust containers, should only be carried out by professionals. Suitable protective equipment is required. Do not operate the vacuum cleaner unless the complete filter system is correctly inserted. Otherwise, you are putting your health at risk.
• Before using the equipment for the first time, check that the vacuum hose is in perfect condition. Leave the vacuum hose fitted to the vacuum cleaner while doing this so that no dust escapes accidentally. Otherwise, you may end up inhaling dust particles.
• Do not sit on the vacuum cleaner. You can damage the vacuum cleaner this way.
• Take care when using the power cable and the vacuum hose. Improper use of these can put other people at risk.
• Do not clean the vacuum cleaner by spraying a jet of water directly at it. Water entering the top of the vacuum cleaner will increase the risk of electric shock.

Products sold in GB only

Your product is fitted with a BS 1363/A approved electric plug with an internal fuse (ASTA approved to BS 1362).
If the plug is not suitable for your socket outlets, it should be cut off and an appropriate plug fitted in its place by an authorized customer service agent. The replacement plug should have the same fuse rating as the original plug.
The severed plug must be disposed of to avoid a possible shock hazard and should never be inserted into the main socket elsewhere.

Symbols

The following symbols may provide you with important information pertaining to the use of your dust extractor. Please take note of the symbols and their meaning. Knowing what these symbols mean will help you to use your extractor more effectively and safely.
Symbols and their meaning

• WARNING! Read all the safety and general instructions. Failure to observe the safety information and follow instructions may result in electric shock, fire, and/or serious injury.

• Dust extractor from dust class M in accordance with IEC/EN 60335-2-69 for the dry extraction of harmful dust with an exposure limit of ≥ 0.1 mg/m3

• WARNING! The dust extractor contains dust particles that pose a risk to health. Emptying and maintenance procedures, including the disposal of dust contain-ers, should only be carried out by professionals. Suitable protective equipment is required. Do not operate the dust extractor without the complete filter system. Otherwise, you are putting your health at risk.

• Only attach a maximum of one L-Boxx.
  The weight of the L-Boxx along with its contents must not exceed 15 kg.

• Do not hang the dust extractor on a crane hook, e.g. in order to transport it. The dust extractor is not suitable for moving with a crane. There is a risk of injury and damage if you do this.

• Do not sit or stand on the dust extractor. The dust extractor may tip over and become damaged if you do this. This poses a risk of injury.

• Automatic start/stop
  Extracting dust that accumulates from working power tools
  The dust extractor switches on automatically and off again with a time delay

• Switching off

• Vacuuming up dust deposits

• Volume flow monitoring for a hose diameter of 15 mm

• Volume flow monitoring for a hose diameter of 22 mm

• Volume flow monitoring for a hose diameter of 35 mm

• Min./max.

• Continuous regulation of suction power:

  • Maximum suction power for applications with a high level of dust generation

  • Reduced suction power for applications with a low level of dust generation, and also to regulate the suction between the connected power tool and the surface of the workpiece, for example (e.g. when sanding)

• Permitted connected load of the connected power tool (country-specific)

• afc

• Automatic filter cleaning

Product Description

Read all the safety and general instructions.

Failure to observe the safety and general instructions may result in electric shock, fire, and/or serious injury. Please observe the illustrations at the beginning of this operating manual.

Intended Use

The tool is intended for collecting, vacuuming, conveying, and separating wood chips as well as non-flammable dry dust types, non-flammable liquids, and a mixture of water and air. The dust extraction capability of the dust extractor has been tested and corresponds to dust class M. It is suitable for the increased demands in professional use, e.g. in trade, industry, and workshops. Dust extractors from dust class M in accordance with IEC/EN 60335-2-69 may only be used to vacuum and extract harmful dust with an exposure limit of 2 0.1 mg/m. Only use the dust extractor if you can fully evaluate all functions and carry them out without restrictions, or if you have received corresponding instructions.

Product Features

The numbering of the product features refers to the illustration of the vacuum cleaner on the graphics page.

1. Container
2. Hose connection piece
3. AFC button
4. Socket for power tool
5. Vacuum-hose holder
6. Mode selector switch
7. Control knob for vacuum capacity
8. Carrying handle
9. L-Boxx retainer
10. Vacuum lid
11. Latch of the vacuum cover
12. Rear wheel
13. Castor brake
14. Castor
15. Cable holder
16. Locking latch of filter cover
17. Holder for vacuum tubes
18. Holder for crevice nozzle/elbow
19. Holder for floor nozzle
20. Tool sleeve
21. Vacuum hose
22. Elbow
23. Disposal bag
24. Flat-fold filter(PES)
25. Crevice nozzle
26. Rubber lip
27. Brush insert
28. Floor nozzle
29. Vacuum tube
30. Retainer for vacuum-hose holder
31. Snap-fastener
32. Air diffuser
33. Signalling LED
34. Filter cover
35. Level sensors

Accessories shown or described are not part of the standard delivery scope of the product. A complete overview of accessories can be found in our accessories program.

Technical Data

Measured with a Ø 35 mm and 5 m long vacuum hose
The values given are valid for nominal voltages [U] of 230 V. For lower voltage and models for specific countries, these values can vary.

Specification of the allowable load of the connected power tool (country-specific)

Noise Information
Measured sound values determined according to EN 60704. Typically the A-weighted sound pressure level of the vacuum cleaner is lower than 70 dB(A). Uncertainty K= 3 dB. The noise level when working can exceed 80 dB(A). Wear hearing protection!

Description

The Bosch Corded Dust Extractor GAS 35 L AFC is a versatile tool that excels in various applications. Its powerful motor ensures consistent suction power, even when dealing with dense materials like concrete or metal dust. The large tank capacity allows for extended use without frequent emptying, making it ideal for long projects. The device comes with an automatic filter cleaning system (AFC) which prevents filter clogging and maintains optimal performance over time. Additionally, the dust extractor features an efficient cooling system to prevent overheating during prolonged use.

Assembly

Before any work on the vacuum cleaner itself, pull the mains plug.

• Mounting the Vacuum-hose Holder (see figure A)
  Slide the vacuum-hose holders 5 firmly from above into the retainers 30 intended for this purpose, until they engage.

• Mounting the Vacuum Hose (see figure B)
  Mount the vacuum hose 21 onto the hose connection piece 2 and turn it in clockwise direction to the stop.
  Note: While vacuuming, an electrostatic charge develops in the vacuum hose and accessories caused through the friction of the dust, which the operator could experience in the form of static discharging (dependent on environmental influences and physical perception).
  As a general rule, Bosch recommends using an anti-static vac-uum hose (accessory), when vacuuming fine dusts and dry materials.

  

• Mounting VAC Accessories (see figure C)
  The vacuum hose 21 is equipped with a clip system, with which the VAC accessories (tool sleeve 20, elbow 22) can be connected.

  

• Mounting the Tool Sleeve 
  Mount the tool sleeve 20 onto the vacuum hose 21 until both snap-fasteners 31 of the vacuum hose can be heard to engage.
  To disassemble, press both snap-fasteners 31 inward and pull the components apart.
• Mounting Nozzles and Tubes
  Mount the elbow 22 onto the vacuum hose 21 until both snap-fasteners 31 of the vacuum hose can be heard to engage.
  Afterward, mount the desired VAC accessory (floor nozzle, crevice nozzle, vacuum tube, etc.) firmly onto the elbow 22.
  To disassemble, press both snap-fasteners 31 inward and pull the components apart.

Inserting/Removing a Disposal Bag or Dust Bag 

(Dry Vacuuming see figures D1 – D2)

For dry vacuuming, a disposal bag 23 or a dust bag (accessory) can be used. This makes the disposal of the dust easier. Note: When using a paper filter bag, the automatic filter cleaning (AFC) (see “Deactivating the AFC”, page 20) must, and when using a fleece filter bag, should be shut off.

Inserting a Disposal bag

• Unlock the latches 11 and remove the vacuum lid 10.
• Insert the disposal bag 23 into the container 1 with the fill-ing opening toward the front.
  Pull the filling opening over the connection flange into the recess of the connection flange.
• Make sure that the disposal bag 23 faces completely against the interior sides of the container 1.
• Fold the rest of the disposal bag 23 over the edge of the container 1.
• Reattach the vacuum lid 10 again and lock the latches 11. 

Removing and Closing the Disposal Bag

• Unlock the latches 11 and remove the vacuum lid 10.
• Pull the full disposal bag 23 toward the rear off of the con-nection flange.
• Carefully remove the disposal bag 23 out of the vacuum cleaner without damaging it.
• When doing this, pay attention that the disposal bag does not get caught or ripped open against the connection flange or other sharp objects.
• Pull the cover off of the adhesive strip, close the disposal bag and tape it shut.
• Afterward, tie off the disposal bag 23 below the filling opening with the pulled-off cover of the adhesive strip.

Replacing/Inserting the Dust Bag (Accessory)

• Unlock the latches 11 and remove the vacuum lid 10.
• Pull off the full dust bag  from the connection flange toward the rear. Close the opening of the dust bag by folding down the lid. Remove the closed dust bag from the vacuum cleaner.
• Work the new dust bag over the connection flange of the vacuum cleaner. Make sure that the dust bag faces com-pletely against the interior sides of the container 1 over its full length.
• Reattach the vacuum lid 10 again and lock the latches 11.

Inserting the Rubber Lip  

Wet Vacuuming

(see figure E)
Note: The requirements for the ingress degree (dust category L) have only been proven for dry vacuuming.

• Carefully pry the brush inserts 27 out of the floor nozzle 28 using a suitable tool.
• Insert the rubber lips 26 into the floor nozzle 28.

Note: The structured side of the rubber lips must face out-ward.

Attaching an L-Boxx 

(see figure F)

For transport of the vacuum cleaner and for place-saving storage of VAC accessories and/or power tools, an L-Boxx can be mounted on the vacuum cleaner lid.
Mount the L-Boxx onto the retainers 9

• Do not carry the vacuum cleaner by the carrying handle of the mounted L-Boxx.
•  The vacuum cleaner is too heavy for the carrying handle of the L-Boxx. Danger of injury and causing damage.

Operation

Starting Operation

• Observe correct mains voltage! The voltage of the pow-er source must agree with the voltage specified on the nameplate of the vacuum cleaner. Equipment marked with 230 V can also be operated with 220 V.
• Please inform yourself about the valid regulations/laws for your country concerning the handling of materials that are hazardous to one’s health.

The vacuum cleaner is suitable for vacuuming and extracting the following materials:

1. Dusts with an exposition limit value > 1 mg/m3
2. The vacuum cleaner may generally not be used in rooms where the danger of an explosion exists.
3. To save energy, only switch the vacuum cleaner on when us-ing it.
4. To ensure optimal vacuuming performance, always complete-ly unwind the vacuum hose 21 from the vacuum cleaner lid 10.

Dry Vacuuming

Vacuuming of deposited dusts

• To switch the vacuum cleaner on, set the mode selector switch 6 to the “vacuuming” symbol.
• To switch the vacuum cleaner off, set the mode selector switch 6 to the “Off” symbol.

Extraction of dusts resulting from running power tools 

(see figure G)

• An adequate ventilation rate (L) must be provided for when the outgoing air is circulated. Observe the re-spective national regulations.
  • A socket outlet with earthing contact 4 is integrated in the vacuum cleaner. An external power tool can be connected there. Observe the maximal allowable load of the connected power tool.
• Insert the tool sleeve 20 into the vacuum connection of the power tool.
• To start the vacuum cleaner’s automatic  Start/Stop feature, set the mode selector  switch 6 to the “Automatic Start/Stop” symbol.
• To start the operation of the vac, switch on the power tool connected to the socket 4. The vacuum cleaner starts au-tomatically.
• Switch the power tool off to end the vacuuming.
• The after-run function of the automatic Start/Stop feature lasts approx. 15 seconds, so that residual dust is drawn out of the vacuum hose.
  • To switch the vacuum cleaner off, set the mode selector switch 6 to the “Off” symbol.

Wet Vacuuming

• Do not vacuum inflammable or explosive fluids; for ex-ample, benzene, oil, alcohol, solvents. Do not vacuum hot or burning dust. Do not operate the machine in rooms where the danger of an explosion exists. The dusts, vapours or fluids can ignite or explode.
• The vacuum cleaner may not be used as a water pump. The vacuum cleaner is intended for vacuuming air and wa-ter mixtures.
• Before any work on the vacuum cleaner itself, pull the mains plug.

Note: The requirements for the ingress degree (dust category L) have only been proven for dry vacuuming.

Remove the disposal bag 23 or the dust bag and empty the  container 1 before wet vacuuming.

Note: For easier disposal when vacuuming liquid-solid mix-tures, use a wet filter bag (accessory), which separates liq-uids from solids.

• Mount the rubber lips into the floor nozzle
• Switch the automatic filter cleaning (AFC) off 

The vacuum cleaner is equipped with filling-level sensors 35. When the maximum filling height is reached, the vacuum cleaner switches off. Set the mode selector switch 6 to the “off” symbol.
Note: When vacuuming non-conductive liquids (e. g. drilling emulsion, oil and grease), the vacuum cleaner is not switched off when the container is full. The level must be monitored continuously and the container emptied in time.
To prevent the formation of mould after wet vacuuming:

• Take out the flat-fold filter 24 and allow it to dry well.
• Remove the vacuum cleaner lid 10 open the filter cover 34 and allow both components to dry thoroughly.

Filter Cleaning

Automatic filter cleaning (see figure H)

1. In automatic filter cleaning mode (AFC = Automatic Filter Cleaning), the flat-fold filter 24 is cleaned every 15 seconds by means of air blasts (pulsating noise). The filter cleaning system must be actuated latest when the vacuuming performance is no longer sufficient.
2. Regular use of the filter cleaning feature increases the tool life of the filter.
3. To achieve ideal filter tool life, deactivate the automatic filter cleaning in exceptional cases, e. g., when vacuuming pure liq-uids or when working with a paper filter bag.
4. A flat-fold filter contaminated only on the surface is fully func-tional. Manual cleaning of the flat-fold filter by striking/tap-ping against it or blowing it out is not necessary, and can even damage the filter.

Note: The automatic filter cleaning is factory-set. Switching the automatic filter cleaning on/off is only possible, when the VAC is running.

• Deactivating the AFC 
  Actuate the AFC button 3.
  The signalling LED 33 goes out.
• Activating the AFC 
  Actuate the AFC button 3.
  The signalling LED 33 lights up green.

Setup Guide

To set up and operate the Bosch Corded Dust Extractor GAS 35 L AFC, follow these steps:

1. Unpack and inspect the device for any damage.
2. Connect the power cord to a suitable electrical outlet.
3. Attach the suction hose and any additional accessories as needed.
4. Tighten all connections securely to prevent leaks.
5. Plug in the device and turn it on using the control switch.
6. Adjust suction power according to your needs using the variable control dial.

Maintenance and Service

Maintenance and Cleaning

• Before any work on the vacuum cleaner itself, pull the mains plug.
• For safe and proper working, always keep the vacuum cleaner and ventilation slots clean.
• Wear a dust protection mask when maintaining and cleaning the vacuum cleaner.

If the replacement of the supply cord is necessary, this has to be done by Bosch or an authorized Bosch service agent in or-der to avoid a safety hazard. A dust-technical inspection is to be carried out at least once every year by the manufacturer or an instructed person, e. g. for damage of the filter, tightness against leakage of the vacu-um cleaner and function of the control/monitoring unit.

For category L vacuum cleaners that were in contaminated environments, the exterior as well as all machine parts should be cleaned or treated with sealants. When performing mainte-nance and repair work, all contaminated components that cannot be cleaned to satisfactory must be disposed of. Such components must be disposed of in impermeable plastic bags conforming with the valid regulations for the disposal of such waste.

For maintenance on behalf of the user, the vacuum cleaner must be disassembled, cleaned and maintained as far as fea-sible, without causing a risk for the maintenance personnel or  other persons. Prior to disassembly, the vacuum cleaner should be cleaned in order to prevent any risks. The room/en-closure in which the vacuum cleaner is disassembled should be well ventilated. Wear personal protective equipment dur-ing maintenance. After the maintenance, the maintenance ar-ea should be cleaned.

Removing/Replacing the Flat-fold Filter 

(see figures I1 – I2)

Replace a damaged flat-fold filter 24 immediately.

• Pull the locking latch 16 and open the filter cover 34.
• Grasp the flat-fold filter 24 by the fins, pull up and remove.
• When taking out the flat-fold filter 24, remove any accumu-lating dust and debris from the closing edge of the filter cover 34 using a moist cloth.
• Gently strike/tap out the flat-fold filter 24.

PES and PTFE flat-fold filters can be flushed out under run-ning water.

• Insert a new or the cleaned flat-fold filter 24; observe prop-er and tight seating.
• Shut the filter cover 34 again (must be heard to engage). 

Container
Wipe out the container 1 from time to time with a commer-cially available, non-scouring cleaning agent and allow to dry.

Level Sensors 

(see figure J)

Clean the level sensors 35 occasionally

• Unlock the latches 11 and remove the vacuum lid 10.
• Clean the level sensors 35 with a soft cloth.
• Reattach the vacuum lid 10 again and lock the ltches 11. Storage and Transport (see figure K)
• Wind the mains cable around the cable holder 15.
• Insert the accessories into the holders provided: Vacuum tubes 29 in holders 17, crevice nozzle 25 in holder 18, floor nozzle 28 in holder 19.
• Undue the elastic tie-downs of the vacuum-hose holders 5 and place the vacuum hose 21 around the vacuum cleaner lid into the holders 5.

Reattach the elastic tie-downs.

• Mount the L-Boxx onto the retainers 9.
• To prevent back injuries, remove a full disposal bag or dust bag, or drain vacuumed-up fluids before transporting the vacuum cleaner.

Carry the vacuum cleaner only by the carrying handle 8.

• Store the vacuum cleaner in a dry room and secure it against unauthorised use.
• To lock the castors 14, actuate the castor brakes 13 by pushing down.

Troubleshooting

Pros & Cons

Pros

• High Suction Power: Effective at capturing fine dust particles and larger debris.
• Durable Construction: Built to withstand heavy use in demanding environments.
• Automatic Filter Cleaning: Maintains performance by preventing filter clogging.
• Large Tank Capacity: Reduces the need for frequent emptying during long projects.

Cons

• Weight: May be heavy for some users to maneuver.
• Noise Level: Can be loud during operation, requiring hearing protection in some cases.
• Cost: Pricier than some other models on the market.

Customer Reviews

"The Bosch GAS 35 L AFC has significantly improved my workspace environment. It handles both wet and dry materials without a hitch. The automatic filter cleaning system works like a charm, ensuring consistent suction power. It's durable, easy to move around, and compatible with a wide range of Bosch tools. Perfect for serious DIYers and professionals alike." Reviewed by Michael R.

"While the extractor works flawlessly, I wish it was a bit more compact for easier storage. It takes up more space in my workshop than I anticipated. That said, it’s excellent at capturing fine dust particles, and I no longer have to worry about hazardous dust buildup. Highly recommend for professional use." Reviewed by Robert F.