BOSCH GAS 18V-12 Cordless Dust Extractor Instruction Manual

: June 12, 2024
: Bosch

Table of Contents

GAS 18V-12 Cordless Dust Extractor
Safety information for vacuum cleaners
Symbols
Product Description and Specifications
Rechargeable battery
Assembly
Operation
Maintenance and Service
Licenses
Documents / Resources

GAS 18V-12 MC Professional
HEAVY DUTY BOSCH GAS 18V 12 Cordless Dust Extractor Original instructions

GAS 18V-12 Cordless Dust Extractor

BOSCH GAS 18V 12 Cordless Dust Extractor - Figure 1 BOSCH GAS 18V 12 Cordless
Dust Extractor - Figure 5

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.
Comply with all safety provisions for the substances being extracted.

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, vapours and liquids can ignite or explode.

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.

NOTE: The vacuum cleaner must only be stored indoors.
NOTE: Clean the floater cage regularly by wiping off external dirt with a damp cloth. Clean the float by lightly shaking the dust extractor. If significant contamination is present which is not removed by this method, contact the Bosch Professional repair service. Do not remove the floater cage, as otherwise coarser contaminants can enter the turbine and damage the dust extractor.
Ensure that the workplace is well ventilated.
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.
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.
If the dust extractor is being used in areas containing hazardous substances, then vacuum, wipe or seal the outside of the dust extractor before taking it out of the hazardous area. All parts of the dust extractor are deemed contaminated and you must ensure appropriate measures are taken to prevent the hazardous substances from spreading.

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.

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.
Do not open the battery. There is a risk of short-circuiting.
In case of damage and improper use of the battery, vapours may be emitted. The battery can set alight or explode. Ensure the area is well ventilated and seek medical attention should you experience any adverse effects. The vapours may irritate the respiratory system.
If used incorrectly or if the battery is damaged, flammable liquid may be ejected from the battery. Contact with this liquid should be avoided. If contact accidentally occurs, rinse off with water. If the liquid comes into contact with your eyes, seek additional medical attention. Liquid ejected from the battery may cause irritation or burns.
The battery can be damaged by pointed objects such as nails or screwdrivers or by force applied externally.
An internal short circuit may occur, causing the battery to burn, smoke, explode or overheat.
When the battery is not in use, keep it away from paper clips, coins, keys, nails, screws or other small metal objects that could make a connection from one terminal to another. A short circuit between the battery terminals may cause burns or a fire.
Only use the battery in the manufacturer’s products.
This is the only way in which you can protect the battery against dangerous overload.
Only charge the batteries using chargers recommended by the manufacturer.
A charger that is suitable for one type of battery may pose a fire risk when used with a different battery.

Protect the battery against heat, e.g. against continuous intense sunlight, fire, dirt, water and moisture. There is a risk of explosion and short- circuiting.

If you notice a dust leak, switch off the dust extractor and empty the container. Failure to do so can damage the dust extractor.
Do not sit on the vacuum cleaner. You can damage the vacuum cleaner this way.
Do not work with the dust extractor if you are carrying it by the strap. You could get caught in the carrying strap and fall while vacuuming.
Use the carrying strap only in conjunction with the dust extractor.
Children must not be allowed to clean or perform maintenance on the dust extractor without supervision.

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. Any use of such marks by Robert Bosch Power Tools GmbH is under license.

Symbols

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

| WARNING! 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.
---|---
| Dust extractor from dust class M in accordance with IEC/EN 60335-2-69 for the dry extraction of harmful dusts 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 containers, should only be carried out by professionals. Suitable protective equipment is required. Do not operate the dust extractor unless the complete filter system is correctly inserted.
Otherwise, you are putting your health at risk.
| Auto-Start function
Extraction of the accruing dust from operational power tools that are connected via an Auto-Start Remote GCT …; the dust extractor switches on automatically and then switches off again after a time delay.
| Switching Off
| Extraction
Extracting dust deposits

Product Description and Specifications

Please observe the illustrations at the beginning of this operating manual.
Intended Use
The dust extractor is intended for collecting, vacuuming, conveying and separating wood chips as well as non-flammable dry dusts, non-flammable liquids and water-air mixtures.
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 ≥ 0.1 mg/m³.
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 representation of the vacuum cleaner on the graphic pages.

(1) Air flow alarm indicator (user interface)
(2) Statusbar (user interface)
(3) Rechargeable battery charge indicator (user interface)
(4) Auto-Start function indicator (user interface)
(5) Button pairing (user interface)
(6) User interface
(7) Holder for accessories
(8) Locking mechanism for accessories bracket
(9) Pull strap
(10) Hose adapter
(11) Sealing plug for extraction connection
(12) Container
(13) Catch for top part of dust extractor
(14) On/off switch
(15) Top part of dust extractor
(16) Carrying handle
(17) Fastening eyes| (18) Battery compartment cover
(19) Battery compartment cover release button
(20) Vacuum hose
(21) Dust extraction adapter
(22) Curved nozzle
(23) SDS Clean adapter for drilling a)
(24) Brush
(25) Crevice nozzle, short
(26) Crevice nozzle, long a)
(27) Floor nozzle, narrow a)
(28) Floor nozzle, wide a)
(29) Suction tube a)
(30) Battery bay
(31) Rechargeable battery a)
(32) Main filter
(33) Bag holder
(34) Float cage| (35) Filter holder
(36) Plastic bag
(37) Snap fastener
(38) Carrying strap
(39) Auto-Start remote GCT … a)
(40) Status indicator of Auto-Start Remote a)
(41) Start/stop button for Auto-Start Remote a)
(42) False air intake of the dust extraction adapter
(43) Detents for bag holder
(44) Float
(45) Castor
(46) Castor adapter
(47) Hose connector
(48) Sealing sleeve at hose end on dust extractor side
(49) Locking ring
(50) Sealing sleeve at hose end of power tool/nozzle
(51) Spring for electrostatic discharge
---|---|---

a) Accessories shown or described are not included with the product as standard. You can find the complete selection of accessories in our accessories range.

Technical data

Cordless wet/dry vacuum cleaner	GAS 18V‑12 MC
Article number
Voltage	V
Rated power input	W
Container volume (gross)	l
Net volume (dry)	l
Net volume (liquid)	l

A) Measured at 20–25 °C with rechargeable battery ProCORE18V 8.0Ah.
B) Measured with vacuum hose (20) and curved nozzle (22)
C) Depends on battery in use
D) Limited performance at temperatures < 0 °C
E) The mobile devices must be compatible with Bluetooth® Low Energy devices (version 4.2) and support the Generic Access Profile (GAP).
F) The signal range may vary greatly depending on external conditions, including the receiving device used. The Bluetooth® range may be significantly weaker inside closed rooms and through metallic barriers (e.g. walls, shelving units, cases, etc.).
Values can vary depending upon the product and are subject to application and environmental conditions. For further information www.bosch- professional.com/wac.

Noise/Vibration Information
Noise emission values determined according to EN 60335‑2‑69.
Typically the A-weighted sound pressure level of the dust extractor is 79 dB(A).
Uncertainty K = 2 dB. The noise level when working can exceed the volume stated. Wear hearing protection!
Vibration total values a (triax vector sum) and uncertainty K determined according to EN 60335‑2‑69: ah < 2.5 m/s², K = 1.5 m/s².

Rechargeable battery

Bosch sells some cordless dust extractors without a rechargeable battery. You can tell whether a rechargeable battery is included with the dust extractor by looking at the packaging.
Charging the battery

Use only the chargers listed in the technical data. Only these chargers are matched to the lithium-ion battery of your dust extractor.

Note: Lithium-ion rechargeable batteries are supplied partially charged according to international transport regulations.
To ensure full rechargeable battery capacity, fully charge the rechargeable battery before using your tool for the first time.

Inserting and removing the Battery
(see figure A)

Do not use force to insert the battery. The battery is designed in such a way that it can only be inserted into the vacuum cleaner when it is in the right position.
Keep the battery compartment and the battery bay clean and dry at all times to ensure good, safe operation.
– Press the release button (19) to open the battery compartment cover (18).
– Slide the battery (31) into the battery bay (30) until it audibly clicks into place.
– To remove the battery (31), press the release button on the battery and pull it out of the battery bay (30).
– Close the battery compartment cover (18).

Note: Due to the filter cleaning system, closing the battery compartment cover requires the use of increased force.
Battery Charge Indicator
When the rechargeable battery is inserted, you can see the state of charge of the battery on the user interface (6). When the rechargeable battery is removed, you can see this on the battery itself.
Battery Charge Indicator on the Dust Extractor
After the dust extractor is switched on, the five green LEDsb of the battery charge indicator (3) will light up individually on the user interface one after another in ascending and descending order. Then the LEDs will indicate the state of charge of the battery (31).
Battery Charge Indicator on the Rechargeable Battery
If the rechargeable battery is removed from dust extractor, its state of charge may be indicated by the green LEDs of the battery charge indicator on the battery.
Press the button for the battery charge indicator or to show the state of charge.
If no LED lights up after pressing the button for the battery charge indicator, then the battery is defective and must be replaced.
Note: Not all battery types have a battery charge indicator.
Battery model GBA 18V…

LEDs	Capacity
3× continuous green light	60−100 %
2× continuous green light	30−60 %
1× continuous green light	5−30 %
1× flashing green light	0−5 %

Battery model ProCORE18V…

LEDs	Capacity
5× continuous green light	80−100 %
4× continuous green light	60−80 %
3× continuous green light	40−60 %
2× continuous green light	20−40 %
1× continuous green light	5−20 %
1× flashing green light	0−5 %

Recommendations for Optimal Handling of the Battery
Protect the battery against moisture and water.
Only store the battery within a temperature range of −20 to 50 °C. Do not leave the battery in your car in the summer, for example.
Occasionally clean the ventilation slots on the battery using a soft brush that is clean and dry.
A significantly reduced operating time after charging indicates that the battery has deteriorated and must be replaced.
Follow the instructions on correct disposal.

Assembly

Remove the battery before cleaning or performing maintenance on the dust extractor, making tool adjustments, changing accessories or placing the dust extractor in storage.
This safety measure prevents the dust extractor from being started accidentally.

Inserting the Main Filter (see figure B)
The main filter (32) is a HEPA pleated filter with extremely high filtration performance for cleaning exhaust air.
– Open the catches (13) and remove the top part of the vacuum cleaner (15).
Note: When removing and setting down the top part of the dust extractor (15), make sure that the rods of the bag holder (33) do not bend or break.

Place the main filter (32) over the float cage (34) and turn it as far as it will go in the rotational direction into the filter holder (35).
Put the top part of the vacuum cleaner (15) on and close the catches (13).

Note: Ensure that the filter is always fitted correctly. This is particularly important when vacuuming hazardous dust.

Inserting/removing the plastic bag (dry extraction) (see figure C)
Note: When removing and setting down the top part of the dust extractor (15), make sure that the rods of the bag holder (33) do not bend or break.
Open both catches (13) and remove the top part of the dust extractor (15).
For dry extraction, insert a plastic bag (36) into the container (12).
Insert the plastic bag (36) into the container (12) ➊ with the inlet facing upwards.
Make sure that the plastic bag (36) touches all the inside walls of the container (12) ➋.
Fold the rest of the plastic bag (36) over the edge of the container (12).
Put the top part of the dust extractor (15) back on ➌ and close the dust extractor using the catches (13).

Ensure that the dust extractor is always properly closed.

Note: Make sure when replacing the top part of the dust extractor (15) that you do not pierce the plastic bag (36) with the rods of the bag holder (33).
Seal the plastic bag before you remove it. To do this, remove the white strip from the plastic bag, hold the bag together at the top and use the strip to tie up the bag.
Fitting the Bracket for Extractor Accessories
Insert the bracket for extractor accessories (7) into the adapter provided.
Lock the bracket for extractor accessories (7) by turning the locking mechanism for the accessories bracket (8) clockwise.
Fitting/attaching the vacuum hose
Fitting the vacuum hose (see figure D)
Pull the sealing plug (11) out of the hose adapter (10).
Attach the vacuum hose (20) to the hose adapter (10) and turn it clockwise as far as it will go.

Always seal the extraction connection with the sealing plug whenever you remove the vacuum hose. This prevents dust from escaping.

Attaching the Vacuum Hose to the Dust Extractor (see figure E)
Wrap the fitted vacuum hose (20) around the dust extractor.
Pull the pull strap (9) down and hook it into one of the 3 grooves you can reach out of the total 15 grooves.
Fitting the Vacuuming Accessories
The vacuum hose (20) is equipped with a clip system which can be used to connect vacuuming accessories (dust extraction adapter (21), curved nozzle (22)).
Fitting the extraction adapter or curved nozzle
(see figure F)
Fit the extraction adapter (21) or the curved nozzle (22) to the vacuum hose (20) until the two snap fasteners (37) on the vacuum hose audibly click into place.
To remove the adapter, press the snap fasteners (37) inwards and pull apart the components.
Fitting the Nozzles and Tubes
If required, place the suction tubes (29) firmly inside one another and then attach them firmly to the curved nozzle (22).
Attach a floor nozzle (27)/(28), a crevice nozzle (25)/(26) or the brush (24) firmly to the suction tube (29) or the curved nozzle (22).
Carrying strap
Attaching the carrying strap (see figure G)

The carrying strap is only intended for carrying and attaching the dust extractor!

Click the snap hooks of the carrying strap (38) into the fastening eyes (17) of the dust extractor.
Hanging up the Dust Extractor using the Carrying Strap (see figure H)
Only hang the dust extractor on objects that can safely support the weight of the full dust extractor.
Place the carrying strap (38) fitted on the dust extractor over a horizontal object (e.g. a bar) or pull the upper end of the loop through a hook or eye. Click the middle snap hook of the carrying strap into the centre fastening eye (17) of the carrying handle (16).
Using the Carrying Strap as a Shoulder Strap (see figure I)
You can use the carrying strap as a shoulder strap.
To do so, simply hang the carrying strap fitted to the dust extractor over your shoulder. When doing so, make sure you adhere to the correct carrying position shown in the figure I.

Operation

Remove the battery before cleaning or performing maintenance on the dust extractor, making tool adjustments, changing accessories or placing the dust xtractor in storage.
This safety measure prevents the dust extractor from being started accidentally.

When operating the dust extractor, ensure that the lockable castors on the dust extractor are blocked to prevent the dust extractor from rolling away unintentionally. Test the correct functioning of the castors on the relevant surface before operation.
Start-up

Make sure you inform yourself about the applicable regulations/laws on how to handle harmful types of dust in your country.

The dust extractor may be used for vacuuming and extracting the following materials:
– Dusts with an exposure limit of ≥ 0.1 mg/m³
The dust extractor must categorically not be used in potentially explosive areas.

Make sure that the working area is safe.
Ensure that the work area is clean and tidy to minimise the risk of tripping.
Before extraction, ensure that the battery compartment cover is securely closed.

Note: In order to comply safely with dust class M and to ensure a maximum application time ProCORE batteries with a capacity of 8 Ah or 12 Ah are recommended.
To ensure optimum suction power, you must always fully unwind the vacuum hose (20).

Ensure that the dust extractor is always properly closed.
Do not use damaged filters (e.g. no cracks, small holes, etc.). Replace any damaged filters immediately.

Switching On and Off
To switch on the dust extractor, turn the on/off switch (14) to position 1.
To switch on the Auto-Start function, turn the on/off switch (14) to position . The Auto-Start function indicator (4) lights up. The dust extractor can be started automatically if it is connected to a power tool via Auto-Start Remote GCT ….
To switch off the dust extractor, turn the on/off switch (14) to position 0.
User interface
The user interface (6) is used as follows:

As a status indicator for the dust extractor
For establishing a connection to an Auto-Start Remote GCT … (39)
For establishing a connection to a mobile device

Status indicators

Status bar| Auto-Start function
indicator A)| Air flow alarm indicator| Meaning
---|---|---|---
Green| –| –| Dust extractor is switched on and ready to use.
Green| Green| –| Dust extractor is ready to use and connected to an Auto-Start Remote.
Yellow| –| –| Battery almost empty
Yellow| Yellow| –| No Auto-Start Remote found
Yellow| –| Flashing yellow + additional audio signal| Air Flow Alarm
Red| –| –| Rechargeable battery empty or temperature alarm for dust extractor or rechargeable battery
Slowly flashing blue| Slowly flashing blue| –| Connection to the Auto-Start Remote is automatically being re-established, following a switch-on of the Auto-Start function.
Rapidly flashing blue| 1× flashing blue| –| Connection to the Auto-Start Remote is being sought and newly established.
Illuminated blue (2 s)| Illuminated blue (2 s)| –| Connection to the Auto- Start Remote has been successfully established
Slowly flashing blue| –| –| Connection to the mobile device is automatically being re-established or data transfer from the mobile device is taking place.
Rapidly flashing blue| –| –| Connection to the mobile device is being sought and newly established.
Illuminated blue (3 s)| –| –| Connection to the mobile device has been successfully established
4× flashing blue
(interval of 1.5 s)| –| –| Reset is being initiated.

A) The Auto-Start function indicator (4) only lights up if the on/off switch (14) is in the position.
Establishing a Connection to the Auto-Start Remote (see figure J)
To be able to use the Auto-Start function, the dust extractor must be connected via Bluetooth® to an Auto-Start Remote GCT … (39).
For this, the dust extractor and the Auto-Start Remote must be located in the immediate vicinity of one another.
If the on/off switch (14) of the dust extractor is turned to the position, the dust extractor automatically begins searching for an Auto-Start Remote GCT …. The statusbar (2) and the Auto-Start function indicator (4) slowly flash blue.
Reconnection to a known Auto-Start Remote:
If the dust extractor has already been connected to an AutoStart Remote GCT … and this Auto-Start Remote is functional and within range, the connection to this Auto-Start Remote is automatically re-established.
Establishment of a new connection (first-time connection or connection to another Auto-Start Remote):

Press and hold the pairing button (5) on the dust extractor until the statusbar (2) begins rapidly flashing blue.
Then promptly press and hold the start/stop button (41) on the Auto-Start Remote (39) until the status indicator (40) on the Auto-Start Remote flashes blue twice.

Connection successfully established:

The statusbar (2) and the Auto-Start function indicator (4) on the dust extractor light up green.
The status indicator (40) on the Auto-Start Remote flashes green once.

Connection could not be established (after several minutes):

The statusbar (2) and the Auto-Start function indicator (4) on the dust extractor light up yellow.
The status indicator (40) on the Auto-Start Remote lights up red.
When the dust extractor is switched off, the connection to the Auto-Start Remote GCT … is saved. After it has been switched on again, the dust extractor attempts to re-establish connection to the same Auto-Start Remote automatically.

Connectivity functions
Within the connectivity functions, data can be transmitted between the dust extractor and certain mobile devices via Bluetooth®.
System Requirements

Mobile device (tablet, smartphone)	Android 6.0 (and newer)

iOS 11 (and newer)

You will need to install the device-specific app before you can use the connectivity functions.
Download the app from the corresponding app store (Apple App Store, Google Play Store).
Note: You will need to have a user account with the relevant app store to do this.

App name	iOS/Android
Bosch Toolbox	![BOSCH GAS 18V 12 Cordless Dust Extractor - QR code

2](https://manuals.plus/wp-content/uploads/2024/06/BOSCH-GAS-18V-12-Cordless- Dust-Extractor-QR-code-2.jpg) https://rb-pt.io/toolbox

Then select the MyTools or Connectivity sub-item in the app. The display of your mobile device shows you all of the subsequent steps required to connect the dust extractor to the mobile device.
The establishment of the connection between the dust extractor and the mobile device is initiated via the app. When the statusbar (2) on the dust extractor begins rapidly flashing blue, confirm the establishment of the connection by pressing the pairing button (5). After the connection has been successfully established, the statusbar (2) lights up blue for 3 s.
The following functions will be available when a connection has been established with the mobile device and authorisation has been successful:

Registration and personalisation
Status check, output of warning messages
General information and settings
Management
Setting the follow-up time for the Auto-Start function
Update of the connectivity software in the dust extractor

Resetting to Factory Settings (Reset)
If necessary, you can reset the saved settings (run-on time, connections to the Auto-Start Remote and mobile device) as well as error messages. To do so, press the pairing button (5) until the statusbar (2) flashes blue four times in intervals of 1.5 s.
The reset can also be initiated via the Bosch Toolbox app.
Dry Vacuuming

The dust extractor must not be used without a filter.

For dry extraction, the main filter (32) must be dry and a plastic bag (36) must be used (see “Inserting/removing the plastic bag (dry extraction) (see figure C)”, page 23).
Extracting dust that accumulates from working power tools (see figure K)

There must be a sufficient air exchange rate (L) in the room when the exhaust air comes back into the room.
Be aware of the corresponding national regulations.

Connect the extraction outlet of the power tool and the vacuum hose (20) either directly or via the dust extraction adapter (21) (see “Fitting the extraction adapter or curved nozzle (see figure F)”, page 24).
Note when using the dust extraction adapter: When working with power tools that have a low air feed into the vacuum hose (e.g. jigsaws, sanders, etc.), the false air intake (42) of the dust extraction adapter (21) must be opened.This will improve the total output of the dust extractor and the power tool. To do this, turn the ring above the false air intake (42) until the opening is at its maximum size.
The SDS Clean adapter (23) can be used for dust extraction when drilling.Make sure to observe the corresponding operating instructions when using this.
With the Auto-Start function, you can automatically switch the dust extractor on and off with the power tool using the Auto-Start remote (39):
– Turn the on/off switch (14) to position . The Auto-Start function indicator (4) lights up to indicate that the function is switched on.
– Connect the dust extractor to the Auto-Start Remote (see “Establishing a Connection to the Auto-Start Remote (see figure J)”, page 25). When fitting the Auto-Start Remote (39) to the power tool, observe the operating instructions of the Auto-Start remote.
– To switch on the dust extractor, switch on the connected power tool. The dust extractor will start automatically.

Make sure that the dust extractor has started after the power tool has been switched on.

– To switch off the dust extractor, switch off the power tool. The extraction comes to an end after the set run-on time.
During the run-on period, the residual dust is extracted from the vacuum hose. You can determine the run-on time using the Bosch Toolbox app.

Air Flow Alarm
The air flow alarm is automatically triggered as soon as the air flow falls below the minimum value set by the relevant standard. When an air flow alarm is triggered, the air flow alarm indicator (1) flashes yellow, the statusbar (2) flashes yellow and an audible signal sounds.
Switch off the dust extractor and eliminate the cause of the alarm.
After each step, check whether the air flow alarm is still activated by switching on the dust extractor. In this case, switch off the dust extractor and perform the following actions.
Proceed as follows:

Check that there is sufficient air flow through the connected power tool.
Open the false air intake (42) of the dust extraction adapter (21) or the false air intake of the power tool completely.
Check the state of charge of your rechargeable battery.
If the rechargeable battery is running low on power, charge or change the rechargeable battery.
Check the plastic bag (36).
If it is full, switch it out for another one.
Disconnect the vacuum hose (20) from the dust extractor.
If this ends the air flow alarm, check the vacuum hose (20) for kinks and remove any suction residues in the hose or the fitted nozzles.
Activate the manual filter cleaning (see “Manual Filter Cleaning”, page 27).
Clean the main filter (32) (see “Cleaning/replacing fil- ters”, page 28).
Change the main filter (32).

If all measures have been carried out to no success, contact an authorised Bosch after-sales service centre.
Manual Filter Cleaning

Only carry out the filter cleaning with the dust extractor switched off and the turbine stationary.

The filter cleaning function should be activated at the very latest when the suction power is no longer sufficient.
How often filter cleaning needs to be carried out will depend on the type and quantity of dust that has been extracted.
With regular use, the maximum conveying capacity will be maintained for longer.
For the filter cleaning, open and close the battery compartment cover (18).
This sets the filter into vibration. Opening and closing multiple times (up to three times) will improve cleaning.
You can find a video on manual filter cleaning via this QR code.

BOSCH GAS 18V 12 Cordless Dust Extractor - QR code 3 https://www.youtube.com/watch?v=aKpcj2K9GO4

Electrostatic discharge
The friction generated by the dust in the vacuum hose and accessory during vacuuming causes an electrostatic charge that may be perceptible as static discharge (depending on environmental factors and physiological state).
This dust extractor is fitted with a conductive vacuum hose (20) as standard.This vacuum hose (20) is electrically connected to the bag holder (33) via the hose adapter (10).
Therefore, if the vacuum hose (20) comes into contact with the floor, an electrostatic discharge is possible.
Wet Vacuuming

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, vapours and liquids can ignite or explode.
The dust extractor must not be used without a filter.

Note: When removing and setting down the top part of the dust extractor (15), make sure that the rods of the bag holder (33) do not bend or break.
Before Starting Wet Extraction (see figure L)
Empty the container (12) and remove the plastic bag (36).
Press the detents (43) ➊ and remove the bag holder (33) ➋.
During and after wet vacuuming
The dust extractor is equipped with a float (44). Extraction is stopped when the maximum filling level is reached. The container (12) should then be emptied.
Note: If the container (12) is not emptied in a timely manner, the main filter (32) will also become filled with fluid. In this case, remove the main filter (32) and empty it as well (see “Cleaning/replacing filters”, page 28).
After the work is complete, to prevent the formation of mould, remove the top part of the dust extractor (15) and the main filter (32) and allow both components to dry thoroughly.

Maintenance and Service

Maintenance and Cleaning

Remove the battery before cleaning or performing maintenance on the dust extractor, making tool adjustments, changing accessories or placing the dust extractor in storage.
This safety measure prevents the dust extractor from being started accidentally.
To ensure safe and efficient operation, always keep the dust extractor and the ventilation slots clean.
Wear a dust mask when servicing and cleaning the vacuum cleaner.
Do not use compressed air to clean the dust extractor.
The filter or other components may become damaged.

For the user to carry out maintenance, the dust extractor needs to be disassembled, cleaned and maintained as far as this is possible without endangering maintenance personnel or other persons. Before disassembly, the dust extractor should be cleaned to prevent any potential hazards. The room/enclosure in which the dust extractor is disassembled should be well ventilated. Wear personal protective equipment while carrying out maintenance. After completing maintenance, the maintenance area should be cleaned.
An inspection regarding the dust extraction capability must be carried out at least once a year by the manufacturer or someone who has been trained, e.g. to check for filter damage, that the dust extractor is tight and that the control unit is functioning correctly.
Class M dust extractors that have been in dirty environments should have their exteriors, as well as all their components, cleaned. Suction, wipe down and seal the outside of the dust extractor before removing it from the danger zone. When performing maintenance and repair work, all dirty parts that cannot be cleaned satisfactorily must be disposed of. Such parts must be disposed of in impermeable bags in accordance with the valid provisions for disposing of such waste.
Cleaning the container
Wipe the container (12) from time to time using a non-abrasive off-the-shelf cleaning product and leave it to dry.
Cleaning/replacing filters
The suction power is dependent on the condition of the filter. Therefore, the filter should be cleaned regularly.
Replace any damaged filters immediately.

Open the catches (13) and remove the dust extractor lid (15).
Take hold of the main filter (32) at the end piece (not at the flaps). Turn it as far as it will go in the rotational direction and then remove it (see figure M).
If the filter is dry:
Tap the main filter (32) on the side of a suitable waste bin. When doing so, ensure that you do not damage the flaps on the filter.
To achieve maximum suction power, brush down the flaps of the filter using a soft brush.
or
If the filter is wet:
Rinse the main filter (32) under running water and then leave it to dry thoroughly.
or
Replace the main filter (32) if it is damaged.
Place the main filter (32) over the float cage (34) and turn it as far as it will go in the rotational direction into the filter holder (35) (see figure B).
Replace the dust extractor lid (15) and close the catches (13).
Make sure that the catches engage firmly.

Replacing castors (see figure X N)
Only use rollers as per EN 12529 (diameter of fastening pin 11 mm).

Check the functionality of the castor brakes before using the dust extractor.

Use the brakes if you want the dust extractor to remain stationary.
Repairing the Vacuum Hose
You can cut off a section of a vacuum hose (20) that is defective and continue to use the undamaged section.

Wear gloves when repairing the hose. This poses a risk of injury.

To repair the vacuum hose at the dust extractor side (see figures O−P):

Loosen the locking ring (49) from the hose connector (47) by pushing in the retaining lugs with a screwdriver.
Pull the locking ring (49) behind the defective area ➊.
Unscrew the sealing sleeve (48) ➋.
Cut off the vacuum hose (20) behind the defective area (see figure P).
Screw the sealing sleeve (48) back on ➌.
Push the end of the vacuum house into the hose connector (47) ➍.
Push the locking ring (49) onto the hose connector (47) until it clicks audibly into place ➎.

To carry out a repair at the power tool/nozzle side (see figure Q):

Unscrew the sealing sleeve (50) ➊.
Cut off the vacuum hose (20) behind the defective area ➋.
Screw the sealing sleeve (50) back on ➌.

Repairing the Bag Holder Attachment (see figure R) If the detents (43) for the bag holder (33) are damaged, the bag holder can also be permanently screwed to the top part of the dust extractor with commercially available Phillips P4 11 mm screws. If the bag holder (33) is in contact with the spring (51), the conductivity for the electrostatic discharge is retained.

Rectifying Errors

Problem	Cause	Corrective measure
Suction turbine will not switch on.	Rechargeable (31) low on power	Charge or

replace battery
On/off switch (14) in position, but no Auto-Start Remote GCT … is connected| Turn on/off switch to position 1
The suction turbine switches off.| Container (12) full| Empty the container
The suction turbine will not switch on again after the container has been emptied.| Reset required| Switch off the dust extractor, remove the rechargeable battery (31), wait 5 s, insert the rechargeable battery and switch on the dust extractor
Dust extractor switches off too late with the Auto-Start function.| Run-on time has been set for too long| Shorten the run-on time via the Bosch Toolbox app (minimum run-on time: 6 s)
The suction power is decreasing.| Plastic bag (36) is full| Replace the plastic bag
Suction nozzle, suction tube (29) or vacuum hose (20) is blocked| Remove blockages
Main filter (32) is soiled or defective| Carry out manual filter cleaning, clean or replace the main filter
Main filter (32) has not engaged in the filter holder (35)| Make sure that the main filter has correctly engaged
Top part of the dust extractor (15) is not seated correctly| Place the top part of the dust extractor on correctly and close the catches (13)
Dust escapes during dry extraction| Main filter (32) has been fitted incorrectly| Check that the main filter has been fitted correctly
Main filter (32) is defective| Change the main filter
Water escapes during wet extraction| Float (44) is blocked| Continually check the fill level and empty the container (12) in good time
Wipe down the float cage with a damp cloth and clean the float by lightly shaking the dust extractor
If the float and float cage become heavily contaminated, contact an authorised Bosch after-sales service centre.
Temperature warning triggered (statusbar (2) lights up red)| Rechargeable battery (31) or motor overheated| Switch off the dust extractor, remove the rechargeable battery, and allow the rechargeable battery and the dust extractor to adjust to the ambient temperature
Air flow alarm triggered (Audible signal + air flow alarm indicator (1))| | Follow the instructions in the corresponding section (see “Air Flow Alarm”, page 27).
Manual filter cleaning cannot be triggered.| | Contact an authorised Bosch after-sales service centre.
Electrostatic discharge| Dissipation of electrostatic charging has been interrupted| Ensure that the vacuum hose (20) is always in contact with the ground during operation.
Check that there is no defect in the contact of the spring (51) with the bag holder (33).
If necessary, repair the bag holder attachment (see “Repairing the Bag Holder Attachment (see figure R)”, page 28).

After-Sales Service and Application Service
Our after-sales service responds to your questions concerning maintenance and repair of your product as well as spare parts.
You can find explosion drawings and information on spare parts at: www .bosch-pt.com
The Bosch product use advice team will be happy to help you with any questions about our products and their accessories.
In all correspondence and spare parts orders, please always include the 10‑digit article number given on the nameplate of the product.
Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham Uxbridge
UB 9 5HJ
At www.bosch-pt.co.uk you can order spare parts or arrange the collection of a product in need of servicing or repair.
Tel. Service: (0344) 7360109
E-Mail:boschservicecentre@bosch.com
You can find further service addresses at: www.bosch- pt.com/serviceaddresses

Transport
The recommended lithium-ion batteries are subject to legislation on the transport of dangerous goods. The user can transport the batteries by road without further requirements.
When shipping by third parties (e.g.: by air transport or forwarding agency), special requirements on packaging and labelling must be observed. For preparation of the item being shipped, consulting an expert for hazardous material is required.
Dispatch battery packs only when the housing is undamaged.
Tape or mask off open contacts and pack up the battery in such a manner that it cannot move around in the packaging.
Please also observe the possibility of more detailed national regulations.
Disposal
Do not dispose of vacuum cleaners or battery packs/batteries with household waste.
Vacuum cleaners, batteries, accessories and packaging should be sorted for environmentally friendly recycling.
Only for EU countries:
According to the Directive 2012/19/EU on waste electrical and electronic equipment and its transposition into national law, dust extractors that are no longer usable, and, according to the Directive 2006/66/EC, defective or drained batteries must be collected separately and disposed of in an environmentally correct manner.
If disposed incorrectly, waste electrical and electronic equipment may have harmful effects on the environment and human health, due to the potential presence of hazardous substances.
Only for United Kingdom:
According to The Waste Electrical and Electronic Equipment Regulations 2013 (SI 2013/3113) (as amended) and the Waste Batteries and Accumulators Regulations 2009 (SI 2009/890) (as amended), products that are no longer usable must be collected separately and disposed of in an environmentally friendly manner.
Battery packs/batteries:
Li-ion:
Please observe the notes in the section on transport (see “Transport”, page 30).

BOSCH GAS 18V 12 Cordless Dust Extractor - Figure 6

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STM32F0 HAL Driver, V1.7.3
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EU Declaration of Conformity

Cordless wet/dry dust extractor| Article number| We declare under our sole responsibility that the stated products comply with all applicable provisions of the directives and regulations listed below and are in conformity with the following standards.
Technical file at:
---|---|---
GAS 18V‑12 MC| 3 601 JK2 000| 2006/42/EC
2014/53/EU
2011/65/EU| EN 60335-1:2012+A11:2014+
A13:2017+A1:2019+A2:2019+
A14:2019+A15:2021
EN 60335-2-69:2012
EN 300 328 V2.2.2
EN 301 489-17 V3.2.4
EN 55032:2015+A11:2020+A1:2020
EN 50566:2017
EN IEC 63000:2018
| Robert Bosch Power Tools GmbH
(PT/ECS)
70538 Stuttgart
GERMANY
Henk Becker
Chairman of Executive Management| Helmut Heinzelmann
Head of Product Certification
Robert Bosch Power Tools GmbH, 70538 Stuttgart, GERMANY Stuttgart, 09.05.2023

Declaration of Conformity

Cordless wet/dry dust extractor
GAS 18V-12 MC| Article number
3 601 JK2 000
---|---
We declare under our sole responsibility that the stated products comply with all applicable provisions of the regulations listed below and are in conformity with the following standards.
Technical file at: Robert Bosch Ltd. (PT/SOP-GB), Broadwater Park, North Orbital Road, Uxbridge UB9 5HJ, United Kingdom
| The Supply of Machinery (Safety) Regulations 2008
The Radio Equipment Regulations 2017
The Restriction of the Use of Certain Hazardous Substances in
Electrical and Electronic Equipment Regulations 2012
EN 60335-1:2012+A11:2014+A13:2017+A1:2019+
A2:2019+A14:2019+A15:2021
EN 60335-2-69:2012
EN 300 328 V2.2.2
EN 301 489-17 V3.2.4
EN 55032:2015+A11:2020+A1:2020
EN 50566:2017
EN IEC 63000:2018
| Robert Bosch Power Tools GmbH, 70538 Stuttgart, Germany represented (in terms of the above regulations) by Robert Bosch Limited, Broadwater Park, North Orbital Road,
Uxbridge UB9 5HJ, United Kingdom
Vonjy Rajakoba
Managing Director – Bosch UK| Martin Sibley
Head of Sales Operations and Aftersales
Robert Bosch Ltd. Broadwater Park, North Orbital Road, Uxbridge UB9 5HJ, United Kingdom, as authorised representative acting on behalf of Robert Bosch Power Tools GmbH, 70538 Stuttgart, Germany
Place of issue: Uxbridge| Date of issue: 25/05/2023

Robert Bosch Power Tools GmbH
70538 Stuttgart
GERMANY
www.bosch-pt.com
1 609 92A 5N0 (2023.09) T / 379
1 609 92A 5N0

Documents / Resources

| BOSCH GAS 18V-12 Cordless Dust Extractor [pdf] Instruction Manual
GAS 18V-12 Cordless Dust Extractor, GAS 18V-12, Cordless Dust Extractor, Dust Extractor, Extractor
---|---