Hitachi DH 50MB instruction manual Maintenance and Inspection

Page 17

English

MAINTENANCE AND INSPECTION

WARNING: Be sure to switch power OFF and disconnect the plug from the receptacle during maintenance and inspection.

1.Inspecting the drill bits

Since use of a dull tool will cause motor malfunctioning and degraded efficiency, replace the drill bit with a new one or resharpening without delay when abrasion is noted.

2.Inspecting the mounting screws

Regularly inspect all mounting screws and ensure that they are properly tightened. Should any of the screws be loose, retighten them immediately.

WARNING: Using this rotary hammer with loosen screws is extremely dangerous.

3.Maintenance of the motor

The motor unit winding is the very “heart” of the power tool. Exercise due care to ensure the winding does not become damaged and/or wet with oil or water.

4.Regarding indication lamp (red) for carbon brush replacement (Fig.20)

When the time for carbon brush replacement nears, an indication lamp will light up in red as you turn the switch on. When the indication lamp lights up, replace both carbon brushes with new ones as early as you can.

The indication lamp will light up approximately 10 hours before the service life of the carbon brushes ends.

	Brush Cap Cover	Indication Lamp
	Brush Cap Cover	(Red) for Carbon
		(Red) for Carbon
		Brush	Replacement

	Tapping	Brush Cap
	Screw	Brush Cap
	Screw
		Fig. 20

5.Inspecting the carbon brushes: (Fig. 21)

The motor employs carbon brushes which are consumable parts. When they become worn to or near “wear limit”, it could result in motor trouble. When an auto-stop carbon brush is equipped, the motor will stop automatically. At that time, replace both carbon brushes with new ones which have the same carbon brush Nos. shown in the figure.

In addition, always keep carbon brushes clean and ensure that they slide freely within the brush holders.

CAUTION: Using this rotary hammer with a carbon brush which is worn in excess of the wear limit will damage the motor.

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Contents Rotary Hammer Marteau Rotatif Martillo Giratorio Manual DE Instrucciones E Instrucciones DE SeguridadContents Important Information Meanings of Signal WordsGeneral Safety Rules SafetyEnglish Specific Safety Rules and Symbols Do not wipe plastic parts with solvent Double Insulation for Safer Operation Name of Parts SpecificationsFunctional Description Prior to Operation Assembly and OperationApplications Regulating the number of rotations and hammering Fig HOW to USEHow to drill holes Fig When chipping and shredding at hammering How to chisel or crush FigWhen drilling at rotation + hammering Install the stopper Fig Warming up Fig Using Drill CHUCK, Chuck AdaptorMounting HOW to USE the Core BITDismounting Fig How to bore FigMaintenance and Inspection How to replase grease Modifications Service and repairsService parts list Standard Accessories AccessoriesDrilling holes....For drilling metals and wooden materials Hitachi Signification DES Mots D’AVERTISSEMENT Informations ImportantesConserver CES Instructions SecuriteRegles Generale DE Securite Français Manipuler l’outil correctement Regles DE Securite Specifiques ET SymbolesUtiliser l’outil correct Ne pas essuyer les parties en plastique avec du solvant Garder propres les évents d’air du moteurUtiliser l’outil motorisé à la tension nominale Double Isolation Pour UN Fonctionnement Plus SUR Remarque Description FonctionnelleNOM DES Parties Avant L’UTILISATION Utilisation PrecautionRéglage du nombre de rotations et de percussion Fig Comment percer des trous FigPerçage en rotation + percussion Comment buriner ou broyer FigBurinage et découpures en percussion Moteur est à l’arrêt completInstaller la quenouille Fig Precautión AvertissementPréchauffage Fig Montage Comment Utiliser LA Couronne’assurer que l’interrupteur est sur la Position d’arrêt OFF et débrancher ’outilDémontage Fig Perçage FigContrôle du foret de perçage Entretien ET InspectionInspection des vis de montage Entretien du moteurComment remplacer la graisse Liste des pièces de rechange Entretien et reparationAccessoires Standard AccessoiresPerçage de trous.…Pour perçage des métaux et du bois Creusage de rainures et cassure des angles Percussion Significado DE LAS Palabras DE Señalización Información ImportanteGuarde Estas Instrucciones SeguridadNormas Generales DE Seguridad Peligrosos cuando se utilicen con otra Maneje correctamente la herramienta Normas Y Símbolos Específicos DE SeguridadUtilice la herramienta correcta No limpie las partes de plástico con disolvente Maneje con cuidado las herramientas eléctricasAislamiento Doble Para Ofrecer UNA Operación MÁS Segura Nomenclatura Descripción FuncionalEspecificaciones NotaAntes DE LA Operación Montaje Y OperaciónAplicaciones Regulación de número de rotaciones Martilleo Fig Modo DE UtilizacionTaladrar orificios Fig PrecauciónPara cortar con escoplo y cincel en el modo de martilleo Forma de picar o romper FigCuando taladre con rotación + martilleo Instalar el tope Fig Calentamiento Fig AdvertenciaMontaje Modo DE Usar LA Barrena TubularDesmontaje Fig Modo de taladrar FigInspeccionar la broca de taladro Mantenimiento E InspecciónInspección de los tornillos de montaje Mantenimiento de motorCambio de grasa Modificaciones Mantenimiento y reparaciónLista de repuestos Accesorios Estándar AccesoriosRomper Martilleo Excavar, ranurado y rebordes Martilleo Page Page English Français Español 4MM Page Hitachi Koki Canada Co