Operation And Maintenance - GRAPHITE 58G509 Guia Del Usuario

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Keep the rotary hammer drill in the axis of the hole. Keeping the drill perpendicular to the surface of the
processed material ensures the most effective operation. If a drill is not kept perpendicular to the surface
during operation, it may get jammed or broken in the hole, and injure the user.
Long lasting drilling at low rotational speed of the spindle may cause motor overheating. Make pe-
riodic breaks during operation or let the tool operate at maximum speed with no load for approxi-
mately 3 minutes. Do not cover holes for motor ventilation in the rotary hammer body.
DRILLING WITHOUT IMPACT
Materials like steel, wood and plastics can be drilled with rotary hammer with the use of three jaw chuck
with intermediate adapter. Assemble together three jaw chuck and adapter by twisting and then place it in
the rotary hammer chuck (proceed like with SDS-PLUS drills) (fig. D).
Use drills made of high speed steel or carbon steels (only for wood and wood-like materials).
Do not use three jaw drill chuck when the rotary hammer drill is set to impact drilling. This chuck is
designed for regular drilling only (in wood or steel).
IMPACT DRILLING
● Choose appropriate mode of drilling, impact drilling in this case.
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Insert appropriate drill with SDS-PLUS shank into the chuck (
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To get the best results use high quality drills with sintered carbide inserts.
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Press the drill against processed material.
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Switch on the rotary hammer by pressing the switch button (
should operate smoothly and the tool should not bounce on the processed material surface.
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Increase speed when needed by pressing the switch button (
Unplug the power cord from the mains socket before commencing any activities related to installa-
tion, adjustment, repair or maintenance.
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Always keep the rotary hammer drill clean.
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Never use any caustic agents for cleaning plastic parts of the rotary hammer drill.
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After operation use compressed air to blow through the rotary hammer drill to remove dust deposit,
especially to keep ventilation slots pervious.
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It is necessary to regularly check technical condition of carbon brushes of the electrical motor (dirty or
used up brushes can cause excessive sparking and loss of spindle speed of the rotary hammer drill).
REPLACEMENT OF CARBON BRUSHES
Replace immediately worn out (shorter than 5 mm), burnt or cracked motor carbon brushes. Always
replace both brushes at a time.
Entrust replacement of carbon brushes only to a qualified person. Only original parts should be
used.
ADDITIONAL HINTS FOR USING ROTARY HAMMER DRILL
To achieve the best possible efficiency when working in concrete, apply moderate (not excessive) pressure
on the rotary hammer. Excessive pressure would lead to efficiency loss. Rotary hammer filled with solid
lubricant requires some time to heat up, depending on the surrounding temperature. New rotary hammer
requires some time to work before it achieves full working efficiency.
All faults should be repaired by service workshop authorized by the manufacturer.

OPERATION AND MAINTENANCE

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1).
4), the rotary hammer drill mechanism
4).