OBJ_DOKU-1989-001.fm Page 1 Tuesday, November 27, 2007 9:52 AM Robert Bosch GmbH Power Tools Division 70745 Leinfelden-Echterdingen www.bosch-pt.com GNF Professional 1 609 929 K57 (2007.
OBJ_BUCH-126-001.book Page 3 Tuesday, November 27, 2007 9:54 AM 3| 1 2 3 4 5 6 10 9 8 7 7 GNF 20 CA Professional 1 609 929 K57 | (27.11.
OBJ_BUCH-126-001.book Page 4 Tuesday, November 27, 2007 9:54 AM 4| 2 3 4 5 6 10 9 8 7 7 GNF 35 CA Professional 1 609 929 K57 | (27.11.
OBJ_BUCH-126-001.book Page 5 Tuesday, November 27, 2007 9:54 AM 5| 11 12 13 12 13 GNF 35 CA Professional GNF 20 CA Professional 14 1 609 929 K57 | (27.11.
OBJ_BUCH-126-001.book Page 6 Tuesday, November 27, 2007 9:54 AM 6| A 16 17 18 19 18 20 1 1 609 929 K57 | (27.11.
OBJ_BUCH-126-001.book Page 20 Tuesday, November 27, 2007 9:54 AM 20 | English General Power Tool Safety Warnings en WARNING Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury. Save all warnings and instructions for future reference. The term “power tool” in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.
OBJ_BUCH-126-001.book Page 21 Tuesday, November 27, 2007 9:54 AM English | 21 g) If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. Use of dust collection can reduce dust-related hazards. 5) Service a) Have your power tool serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained. 4) Power tool use and care a) Do not force the power tool.
OBJ_BUCH-126-001.book Page 22 Tuesday, November 27, 2007 9:54 AM 22 | English f Always use undamaged wheel flanges that are of correct diameter for your selected wheel. Proper wheel flanges support the wheel thus reducing the possibility of wheel breakage. f The outside diameter and the thickness of your accessory must be within the capacity rating of your power tool. Incorrectly sized accessories cannot be adequately guarded or controlled.
OBJ_BUCH-126-001.book Page 23 Tuesday, November 27, 2007 9:54 AM English | 23 f Never place your hand near the rotating accessory. The accessory may kickback over your hand. f Do not position your body in the area where the power tool will move if kickback occurs. Kickback will propel the tool in the direction opposite to the wheel’s movement at the point of snagging. f Use special care when working corners, sharp edges, etc. Avoid bouncing and snagging the accessory.
OBJ_BUCH-126-001.book Page 24 Tuesday, November 27, 2007 9:54 AM 24 | English Intended Use In conjunction with a dust-category M vacuum cleaner and with firm support of the cutting guide, the machine is intended to cut or slot mainly mineral materials such as reinforced concrete, brickwork and road surfaces without the use of water. Product Features The numbering of the product features refers to the illustration of the machine on the graphics page.
OBJ_BUCH-126-001.book Page 25 Tuesday, November 27, 2007 9:54 AM English | 25 Noise/Vibration Information GNF 20 CA Professional GNF 35 CA Professional dB(A) dB(A) dB 94 105 3 102 113 3 m/s2 m/s2 =4.0 =1.5 =4.0 =1.5 Measured values determined according to EN 60745 (limesand brick).
OBJ_BUCH-126-001.book Page 26 Tuesday, November 27, 2007 9:54 AM 26 | English – It is recommended to wear a P2 filterclass respirator. Observe the relevant regulations in your country for the materials to be worked. The vacuum cleaner must be approved for the extraction of masonry dust. Bosch provides suitable vacuum cleaners. The machine can be plugged directly into the receptacle of a Bosch all-purpose vacuum cleaner with remote starting control.
OBJ_BUCH-126-001.book Page 27 Tuesday, November 27, 2007 9:54 AM English | 27 Determining the Slot Width The slot width results from the amount of spacer discs 19 between the two diamond cutting discs 18 and the cutting width of the diamond cutting discs. The slot width is calculated as follows: Slot width = Thickness of the spacer discs + width of the diamond cutting discs. The allowable slot width is shown in the section “Technical Data”. The machine can be operated with one or two diamond cutting discs.
OBJ_BUCH-126-001.book Page 28 Tuesday, November 27, 2007 9:54 AM 28 | English Reduced starting current The electronic reduced starting current limits the power consumption when switching the tool on and enables operation from a 13 ampere fuse. Constant Electronic Control Constant electronic control holds the speed constant at no-load and under load, and ensures uniform working performance. Overload Protection When overloaded, the motor comes to a stop.
OBJ_BUCH-126-001.book Page 29 Tuesday, November 27, 2007 9:54 AM English | 29 When breaking through walls, e. g. with a rotary hammer, most of the chipping-off of the surface material can be avoided by first cutting in a slot with maximum cutting depth. Maintenance and Service For cutting expecially hard material, e. g., concrete with high pebble content, the diamond cutting disc can overheat and become damaged as a result.
OBJ_BUCH-126-001.book Page 30 Tuesday, November 27, 2007 9:54 AM 30 | English Spare Parts GNF 20 CA Mounting flange 17 . . . . . . . . . . 3 600 390 023 Spacer discs, 4 mm 19 . . . . . . . 3 609 202 041 Clamping nut 20 . . . . . . . . . . . . 3 603 345 005 GNF 35 CA Mounting flange 17 . . . . . . . . . . 3 609 202 039 Spacer discs, 4 mm 19 . . . . . . . 3 609 202 041 Spacer discs, 6 mm 19 . . . . . . . 3 609 202 042 Clamping nut 20 . . . . . . . . . . . .
