1. Introduktion
The FERM WSM1009 Wall Slotter is a powerful tool designed for making precise cuts and grooves in walls and floors. This allows for the efficient concealment of cables and electrical pipes. Equipped with two 125mm diamond discs, a 1700W motor, and laser guidance, it is capable of cutting through various hard and dense materials, including stone and concrete.
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your FERM WSM1009 Wall Slotter. Please read it thoroughly before initial use and keep it for future reference.
2. Sikkerhedsinstruktioner
Følg altid de generelle sikkerhedsadvarsler for elværktøj og lokale bestemmelser. Manglende overholdelse af disse instruktioner kan resultere i elektrisk stød, brand og/eller alvorlig personskade.
2.1 Generelle sikkerhedsadvarsler
- Sikkerhed på arbejdsområdet: Hold arbejdsområdet rent og godt oplyst. Rodede eller mørke områder indbyder til ulykker. Brug ikke elværktøj i eksplosive atmosfærer, f.eks. i nærheden af brandfarlige væsker, gasser eller støv.
- Elektrisk sikkerhed: Elværktøjsstik skal passe til stikkontakten. Modificer aldrig stikket på nogen måde. Udsæt ikke elværktøj for regn eller våde forhold.
- Personlig sikkerhed: Always wear appropriate personal protective equipment (PPE), including safety glasses, hearing protection, dust mask, and heavy-duty gloves. Dress properly; avoid loose clothing or jewelry.
- Brug og pleje af værktøj: Tving ikke elværktøjet. Brug det korrekte elværktøj til din anvendelse. Tag stikket ud af strømkilden, før du foretager justeringer, skifter tilbehør eller opbevarer elværktøj.
2.2 Specific Wall Slotter Safety
- Ensure the work piece is securely fastened.
- Before cutting, always check for hidden electrical wires, gas pipes, or water pipes using a suitable detector.
- The laser guidance system is for alignment only. Stir ikke direkte ind i laserstrålen.
- Connect a vacuum cleaner to the dust extraction adapter to minimize dust exposure.
- Allow the machine to reach full speed before engaging the cutting surface.
- Hold et fast greb om værktøjet med begge hænder under drift.

Image: Warning labels for laser radiation, indicating Class 2 laser product and caution against staring into the beam. Always observe safety warnings.
3. Product Components and Parts List
The FERM WSM1009 Wall Slotter comes with the following components:
- FERM WSM1009 Wall Slotter Unit
- 2 Diamond Discs (125mm)
- Vakuum adapter
- Heavy Duty Storage Case
- Spanner for disc changes
- Hex-nøgle
- Batteries (2 AAA for laser)

Image: The FERM WSM1009 Wall Slotter, showing the main unit, diamond discs, vacuum adapter, spanner, hex key, and the heavy-duty storage case.

Billede: Et nærbillede view of the FERM WSM1009 Wall Slotter, highlighting the laser guidance system projecting a red line.
4. Opsætning
4.1 Installing Diamond Discs
- Sørg for, at værktøjet er frakoblet strømkilden.
- Open the blade guard.
- Use the provided spanner to loosen the arbor nut.
- Place the two 125mm diamond discs onto the arbor, ensuring they are correctly oriented for cutting.
- Tighten the arbor nut securely with the spanner.
- Close the blade guard.
4.2 Connecting Vacuum Adapter
For dust-free operation, connect a suitable vacuum cleaner to the integrated vacuum adapter port on the tool. This will significantly reduce airborne dust during cutting.

Image: Detail of the FERM WSM1009 Wall Slotter showing the dust extraction port where a vacuum cleaner hose can be attached.
4.3 Adjusting Cutting Depth and Width
The cutting depth can be adjusted up to 28mm, and groove widths can be set to 14mm, 19mm, or 29mm. Refer to the markings on the tool for precise adjustments. Always perform a test cut on a scrap piece of material to verify settings before cutting the main workpiece.
4.4 Laser Guidance Activation
The laser guidance system assists in maintaining a straight cutting line. Insert the 2 AAA batteries into the laser compartment. Activate the laser using its dedicated switch. The laser projects a red line indicating the cutting path.

Billede: En detaljeret view of the laser module on the FERM WSM1009 Wall Slotter, showing the laser emitter and warning symbols.
5. Betjeningsvejledning
5.1 Forberedelse af emnet
Mark the desired cutting path clearly on the wall or floor. Ensure the area is free from obstructions and hidden utilities. Secure any loose material that might interfere with the cut.
5.2 Lav et snit
- Hold the wall slotter firmly with both hands.
- Align the laser line with your marked cutting path.
- Press the safety switch and then the power trigger to start the motor. Allow the discs to reach full operating speed (Max RPM 4000).
- Slowly and steadily guide the tool along the marked line, applying consistent pressure. Let the machine do the work; do not force it.
- Once the cut is complete, release the power trigger and allow the discs to stop rotating before lifting the tool from the workpiece.

Image: A user demonstrating the FERM WSM1009 Wall Slotter in action on a brick wall, with a vacuum hose connected for dust extraction and safety gear worn.

Image: A user operating the FERM WSM1009 Wall Slotter on a plastered wall, showing the laser guide in use for precise cutting.
6. Vedligeholdelse
Regular maintenance ensures the longevity and optimal performance of your wall slotter.
6.1 Rengøring
- After each use, disconnect the tool from power and clean off any dust and debris from the housing, air vents, and blade area using a brush or compressed air.
- Ensure the dust extraction port is clear of blockages.
6.2 Skiveinspektion og udskiftning
- Regularly inspect the diamond discs for wear, cracks, or damage.
- Replace worn or damaged discs immediately to ensure safe and efficient cutting. Refer to section 4.1 for disc installation.
6.3 Opbevaring
Store the wall slotter in its heavy-duty storage case in a dry, secure location, out of reach of children.
7. Fejlfinding
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Værktøjet starter ikke | Ingen strømforsyning; Sikkerhedsafbryder ikke aktiveret; Beskadiget netledning. | Check power connection; Ensure both safety switch and trigger are pressed; Inspect power cord for damage. |
| Reduceret skæreydelse | Worn or dull diamond discs; Incorrect cutting depth setting; Overloading the tool. | Replace discs; Adjust cutting depth; Reduce pressure and allow the tool to work at its own pace. |
| For meget støv under drift | Vacuum cleaner not connected or full; Dust extraction port blocked. | Connect vacuum cleaner and empty if full; Clear any blockages from the dust port. |
| Laseren virker ikke | Dead batteries; Laser switch off. | Replace AAA batteries; Turn on laser switch. |
8. Specifikationer
| Attribut | Værdi |
|---|---|
| Mærke | Ferm |
| Modelnummer | WSM1009 |
| Strømindgang | 1700 watt |
| Voltage | 230 volt, 50 Hz |
| Diskens diameter | 125 mm |
| Max RPM | 4000 RPM |
| Max skæredybde | 28 mm |
| Groove Widths | 14 mm, 19 mm, 29 mm |
| Varens vægt | 7.23 kg |
| Produktmål (LxBxH) | 35 x 23 x 36 cm |
| Batterier påkrævet | 2 AAA (included for laser) |

Image: Product label displaying technical specifications for the FERM WSM1009 Wall Slotter, including voltage, frequency, power, disc diameter, and cutting depth.
9. Garanti og support
For warranty information and customer support, please refer to the documentation included with your purchase or contact FERM International directly. Contact details for FERM International are typically found on the product packaging or their official webwebsted.
Manufacturer: FERM, Ferm International, Lingenstraat 6, 8028 PM Zwolle, Netherlands
Kontakt: +31 38 385 2525





