Connecting the water cooling/dust extraction system
If wet or dry core bits are not sufficiently cooled when drilling, the diamond segments can become damaged or the core bit can jam in the drill hole. You should therefore ensure that the water cooling system provides sufficient cooling when wet drilling, or that the dust extraction system is functioning properly when dry drilling.
When expanding an existing hole, this must be sealed carefully to allow the core bit to be sufficiently cooled.
- Connected hoses, shut-off valves or accessories must not interfere with drilling.
Attach the water connection adapter (12) to the claw coupling (6) and tighten it by turning it clockwise as far as possible.
Close the water cutoff valve (10). Connect a water supply line to the valve adapter (11). The water supply line can be provided from mobile water pressure equipment (accessory) or a stationary water connection.
You will need a water collection ring and a wet/dry extractor (both accessories) to collect the water that escapes from the drill hole during wet drilling.
The water collection ring see Accessories/replacement parts is intended for use with the drill stand for diamond drills GCR 180 and the diamond drill GDB 180 WE.
Cut an opening for the required drilling diameter in the sealing cover.
Push the tension spring (33) as far as possible into the gap between the base plate (25) and drill column (20). Make sure that the angled section of the tension spring is facing downwards.
Put the water collection ring in position and place the tension spring on the contact points on the water collection ring. (The lugs on the ends of the tension spring are used to pull the tension spring upwards.)
The tensioning force of the spring will press the water collection ring with its seal onto the surface. Together with the vacuum of the wet/dry extractor, this will prevent water from escaping.
Do not perform work without taking dust-reducing measures. Using a suitable dust extraction attachment will reduce exposure to harmful dust. Provide good ventilation at the workplace. Always use suitable breathing protection. Use a dust extraction system that is suitable for the material wherever possible. The regulations on the materials being machined that apply in the country of use must be observed.
Requirements for the Dust Extractor | ||
|---|---|---|
Recommended hose nominal diameter | mm | 35 |
Required vacuum pressureA) | mbar | ≥ 230 |
Required flow rateA) | l/s | ≥ 36 |
Recommended filter efficiency | Dust class MB) | |
- A)
Power value at the power tool’s dust extractor connection
- B)
According to IEC/EN 60335-2-69
Refer to the dust extractor’s instructions. If there is reduced suction power, stop working and eliminate the cause.
Connecting the dust extractor to the power tool:
- Attach the extraction adapter (13) to the claw coupling (6) and tighten it by turning it clockwise as far as possible.
- Attach the extraction hose (15) of the dust extractor to the extraction outlet (14).