Bosch Power Tools 11320VS manual Maintenance, VARIO-LOCK- Selector Ring

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! WARNING

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"VARIO-LOCK"- SELECTOR RING

The vario-lock selector ring can be set in any 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, 1).

"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 break-in period before full performance is realized. This period may 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.

Maintenance

Service

Preventive maintenance performed by unauth- orized personnel may result in misplacing

of internal wires and components which could cause serious hazard. We recommend that all tool service be performed by a Bosch Factory Service Center or Authorized Bosch Service Station.

TOOL LUBRICATION

Your Bosch tool has been properly lubricated and is ready to use. It is recommended that tools with gears be lubricated with Bosch lubricant at every brush change.

CARBON BRUSHES

The brushes and commutator in your tool have been engineered for many hours of dependable service. To maintain peak efficiency of the motor, we recommend every two to six months the brushes be examined. Only genuine Bosch replacement brushes specially designed for your tool should be used.

BEARINGS

Every second brush change, the bearings should be replaced at Bosch Factory Service Center or Authorized Bosch Service Station. Bearings which become noisy (due to heavy load or very abrasive material cutting) should

be replaced at once to avoid overheating or motor failure.

REPLACEMENT OF CORD AND

CARBON BRUSHES

Your tool is designed to provide a qualified service technician optimal access to replace the carbon brushes and the cord. This provides the service technician the ability to replace these components without the need of disassembling the entire tool housing.

Cleaning

!WARNING To avoid accidents always disconnect the tool from

the power supply before cleaning or performing any maintenance. The tool may be cleaned most effectively with compressed dry air. Always wear safety goggles when cleaning tools with compressed air.

Ventilation openings and switch levers must be kept clean and free of foreign matter. Do not attempt to clean by inserting pointed objects through openings.

!CAUTION Certain cleaning agents and solvents damage

plastic parts. Some of these are: gasoline, carbon tetrachloride, chlorinated cleaning solvents, ammonia and household detergents that contain ammonia.

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Contents Importante Power Tool Safety Rules Work AreaDemolition Hammer Safety Rules ServiceBM 1619929652 2-04 2/13/04 819 AM Symbols Functional Description and Specifications Demolition HammerInstalling Accessories Operating InstructionsMaintenance VARIO-LOCK- Selector RingAccessories Tool’sRègles de Sécurité Générales Aire de travailSécurité électrique Sécurité des personnesConsignes de sécurité pour le marteau de démolition RéparationLe plomb provenant des peintures à base de plomb Symboles Description fonctionnelle et spécifications Marteau de démolitionPose DE L’ÉQUIPEMENT Accessoire Consignes de fonctionnementService EntretienAccessoires Normas de seguridad para herramientas mecánicas Area de trabajoSeguridad eléctrica Seguridad personalNormas de seguridad para martillos de demolición ServicioBM 1619929652 2-04 2/13/04 819 AM Símbolos De Ni-CdDescripción funcional y especificaciones Martillo de demoliciónInstrucciones de funcionamiento Instalacion DE AccesoriosMantenimiento LimpiezaAccesorios CapacidadBM 1619929652 2-04 2/13/04 819 AM Remarques Notas Limited Warranty of Bosch Portable and Benchtop Power Tools