BM 1609929X76
Operating Instructions
ROCKER “ON/OFF” SWITCH
TO TURN THE TOOL "ON" depress the
TO TURN THE TOOL "OFF": depress switch to the number “0” position (Fig. 1).
For low temperatures, the machine reaches the full impact rate only after a certain time.
This
|
|
| The |
| one of twelve (30˚ increments) positions. |
| Choose a position which is best suited for your |
| operation. To adjust, pull the selector ring |
| forward and hold firmly, then turn both the |
| accessory and the selector ring to the desired |
| position. Release the selector ring and turn |
| the accessory slightly until it locks in place |
| (Fig. 6). |
| FIG. 6 |
FIG. 4 | |
| SELECTOR RING |
VARIAbLE SPEED DIAL
Your tool is equipped with a variable speed dial. The speed and impact force can be adjusted by rotating the dial. Higher speeds
and impact force work best for faster penetration when chiseling in hard masonry material. Slower speeds work best for chiseling material such as plaster or tile (Fig. 7).
FIG. 7
VIBRATION DAMPER HANDLE /
HAMMER MECHANISM
VARIABLE SPEED DIAL |
SERVICE REMINDER |
LIGHT |
CONSTANT RESPONSE CIRCUITRy
The internal electronic feedback system provides a "soft start", which will reduce the stresses that occur from a high torque start. The system also helps to keep the pre- selected impact rate virtually constant between
VIbRATION DAMPER HANDLE /
HAMMER MECHANISM
The integrated vibration damper in the main handle and hammer mechanism reduces vibrations (Fig. 7).
Tool Tips
For the best penetration rates in concrete, run the tool with a steady pressure, but do not use excessive force as this will decrease the efficiency of the tool.
All hammers require a short period of time to warm up. Depending on the room temperature, this time may vary from approximately 15 seconds (90˚F) to 2 minutes (32˚F). A new hammer requires a
require up to 5 hours of operation.
An electric hammer is likely to be the most expensive portable tool at the construction job. The long wear and efficient operation of the BOSCH hammers will more than justify the cost for tools of this type. As earlier pointed out, sharp accessories as well as clean air vents are necessary for efficient operation. Establish and follow a set maintenance program.