Hitachi DV 20VB HOW to USE, Operation of switch, When using as a Drill or a Hammer Drill

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English

CAUTION

Never change the direction of bit rotation while operating. Turn the power switch OFF before changing the direction of bit rotation: otherwise, burning of the motor will result.

Always use the hammer drill with clockwise rotation, when using it as an hammer drill. (Fig. 10)

Reversing switch lever

	Fig. 9
HOW TO USE	Fig. 10
HOW TO USE

CAUTION:

To prevent accidents, make sure to turn the switch off and disconnect the plug from the receptacle when the drill bits and other various parts are installed or removed. The power switch should also be turned off during a work break and after work.

1. Operation of switch

◯The drill speed can be adjusted from O through full speed by regulating the trigger- squeezing force. The more the trigger is squeezed, the faster the drill rotates. When the trigger is squeezed fully, the speed is the maximum.

◯Pulling the trigger and pushig the stopper, it keeps the switched-on condition which is convenient for continuous running. When switching off, the stopper can be disconnected by pulling the trigger again.

2.When using as a Drill or a Hammer Drill

(1) Pressing force of the drill

You cannot drill holes more quickly even if you press the drill with a stronger force than necessary. It not only damages tip of drill bits and decreases the efficiency of operation, but also shortens the life of the drill.

(2) In case of penetrating holes

Drill bits can be broken when the material being drilled is penetrated. It is important to decrease pressing force just before penetrating.

CAUTION

In continuous operation, conduct no-load operation for five seconds after completing a drilling job.

(3)When a thick drill bit is used

Your arm is subjected to larger reaction force when a thicker drill bit is used. Be careful not to be moved by the reaction force. For this, establish a foothold, hodl the unit tightly with both hands perpendicularly to the material being drilled.

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Contents Hammer Drill Marteau Perforateur Martillo ROTO-PERCUTOR AvertissementContents Important Information Meanings of Signal WordsGeneral Safety Rules SafetyUse right tool Never operate without all guards in placeKeep motor air vent clean Blades and accessories must be securely mounted to the toolOperate power tools at the rated voltage Handle tool correctlySpecific Safety Rules and Symbols Double Insulation for Safer Operation Make Them Available to Other Users of this ToolName of Parts Functional DescriptionApplications Assembly and OperationPrior to Operation For keyless chuck Mounting the bit Fixing the side handle FigHigh-speed/Low-speed changeover Impact to Rotation changeover FigConfirm the direction of bit rotation Operation of switch HOW to USEWhen using as a Drill or a Hammer Drill Maintenance and Inspection Standard Accessories AccessoriesDrill bit for concrete and stone Signification DES Mots D’AVERTISSEMENT Informations ImportantesRegles Generale DE Securite SecuriteConserver CES Instructions Français Garder propres les évents d’air du moteur Ne jamais toucher les parties mobilesUtiliser l’outil motorisé à la tension nominale Ne pas essuyer les parties en plastique avec du solvant Regles DE Securite Specifiques ET SymbolesDouble Isolation Pour UN Fonctionnement Plus SUR Description Fonctionnelle SpecificationsNOM DES Parties RemarqueAvant L’UTILISATION Fixation de la poignée latérale Fig Commutation grande vitesse/faible vitesse PrecautionVerifiez la direction de rotation de la mèche PremarqueFonctionnement de l’interrupteur UtilisationEntretien ET Inspection Accessoires Standard AccessoiresMèche pour béton et pierre Significado DE LAS Palabras DE Señalización Información ImportanteNormas Generales DE Seguridad SeguridadGuarde Estas Instrucciones Seguridad eléctricaEspañol Utilice la herramienta correcta No toque nunca las piezas móvilesManeje correctamente la herramienta Maneje con cuidado las herramientas eléctricasNo limpie las partes de plástico con disolvente Normas Y Símbolos Específicos DE SeguridadAislamiento Doble Para Ofrecer UNA Operación MÁS Segura Nomenclatura Descripción FuncionalNota Aplicaciones Montaje Y OperaciónAntes DE LA Operación Montar el asidero lateral Fig Alteración velocidad alta/velocidad baja Alteración de Impacto a Rotacion FigConfirmar la dirección de rotación de la broca PrecauciónOperación del interruptor Como SE USAUso como taladro común o taladro de impacto PrecaucionMantenimiento E Inspección Accesorios Estándar AccesoriosBroca para hormigón y piedra Page Part Name 901