Preparation For Operation; Operation And Maintenance - GRAPHITE 58G875 Manual De Instrucciones

DESCRIPTION OF DRAWING PAGES
Below enumeration refers to the device elements depicted on the
drawing pages of this manual.
SDS Max chuck
1.
Fixing sleeve
2.
Locking ring for chisel setting
3.
Switch lock button
4.
Switch
5.
Motor cover
6.
Auxiliary handle
7.
Locking knob for auxiliary handle
8.
* Differences may appear between the product and drawing.
MEANING OF SYMBOLS
CAUTION
WARNING
ASSEMBLY / SETTINGS
INFORMATION
EQUIPMENT AND ACCESSORIES
Auxiliary handle - 1 pce
1.
Chisels (point and flat) - 2 pcs
2.
Grease tube - 1 pce
3.
Cloth - 1 pce
4.
Carrying case - 1 pce
5.

PREPARATION FOR OPERATION

SETTING THE AUXILIARY HANDLE
Due to safety reasons always use auxiliary handle when operating
the demolition hammer.
Auxiliary handle can be fixed at any point on the hammer casing
circumference and features stepped adjustment of its position.
• Loosen the locking knob for auxiliary handle (8).
• Rotate the auxiliary handle (7) on the hammer casing circumference
to the most comfortable position considering the work at hand.
• Pull the auxiliary handle (7) away from the hammer casing and set up
in appropriate position (fig. A).
• Tighten the locking knob for auxiliary handle (8) to fix it securely.
INSTALLATION AND REPLACEMENT OF WORKING TOOLS
The hammer is designed to operate with working tools with SDS Max
shanks. Prior to starting operation clean the hammer and working
tools. Use grease and apply thin layer onto shank of the working tool
(fig. B). It will improve tool durability.
Disconnect the power tool from power supply.
• Put the hammer against work bench.
• Hold the fixing sleeve (2) of the SDS chuck (1) and overcome the
spring resistance to pull it to the back. (Refer to the graphic symbols
on the fixing sleeve.)
• Insert working tool shank into chuck and slide it to mechanical stop (it
may be necessary to turn the working tool so it can reach appropriate
position) (fig. C).
• Release the fixing sleeve (2), it will finally lock the working tool.
• Working tool is properly seated if it cannot be removed without
pulling off the fixing sleeve (2) of the chuck.
• If the sleeve does not return to its default position, remove the
working tool and repeat the whole operation.
High efficiency of the demolition hammer operation can be achieved
by using sharp and undamaged working tools.
DEINSTALLATION OF WORKING TOOL
Just after the operation is finished, the working tool may be hot.
Avoid direct contact and use appropriate protective gloves. Clean the
working tool after removal.
• Pull the fixing sleeve (2) to the back and hold.
• Remove the working tool with your second hand by pulling it to the
front (fig. C).
SETTING CHISEL TO DESIRED POSITION
Before starting operation you can adjust chisel position to the most
comfortable setting for the task. You can set chisel to 1 of 12 positions.
This feature is useful in particular for flat and shaped chisels.
• Install chisel in the SDS chuck (1).
• Pull the locking ring of the chisel setting (3) forward while overcoming
spring resistance and turn to desired position to either direction with
reference to its circumference (refer to symbols on the ring) (fig. D).
• Release pressure on the locking ring for the chisel setting (3) so the
ring returns to its initial position. (If the ring does not return to its
position, rotate it slightly to lock the chisel in desired position).
The chisel is well secured, when the locking ring for the chisel setting
(3) cannot be rotated without pulling.
OPERATION / SETTINGS
SWITCHING ON / SWITCHING OFF
The mains voltage must match the voltage on the rating plate of the
demolition hammer.
Switching on – press the switch button (5).
Switching off – release pressure on the switch (5).
Locking the switch (continuous operation)
Switching on:
• Press the switch button (5) and hold in this position.
• Press the switch lock button (4) (fig. E).
• Release pressure on the switch button (5).
Switching off:
• Press and release the switch button (5).
Do not use the demolition hammer when the switch is faulty.
HAMMER OPERATION, DEMOLITION
Hold the hammer firmly with both hands and switch it on. To achieve
the best efficiency possible during operation, apply uniform and
moderate (not excessive) pressure on the demolition hammer, as
excessive pressure would lead to efficiency loss. The hammer is factory
lubricated and is ready for operation. Demolition hammer filled
with solid grease requires some time to heat up, depending on the
surrounding temperature. If the demolition hammer is not used for a
long time, or operates in low temperature, allow the hammer to work
with no load for 2-3 minutes.
Sharp working tools improve work efficiency. Ventilation holes with no
dirt reduce risk of motor overheating.
During operation small quantities of grease may come up from
between the working tool and tool holder. This is normal.

OPERATION AND MAINTENANCE

Disconnect the tool from power supply before starting any
regulation, maintenance or repair.
MAINTENANCE AND STORING
• Soft brush or compressed air at low pressure are best for cleaning the
demolition hammer.
• Do not clean the hammer with water or chemical cleaning agents.
• Keep ventilation holes of the motor unobstructed.
• In case of excessive commutator sparking, have the technical condition of
carbon brushes of the motor checked by a qualified person.
• Entrust replacement of power cord and other repairs only to
authorized service workshop.
• Always store the hammer in a dry place, beyond reach of children.
REPLACEMENT OF CARBON BRUSHES
Immediately replace worn out (shorter than 10 mm), burnt or cracked
motor carbon brushes. Always replace both carbon brushes at a time.
Carbon brushes installed in the hammer are equipped with a
protection. When reaching limits of wear (10 mm) they are shifted
away from commutator and the hammer stops working. In this case
replace carbon brushes to restore tool operability.
• Undo fixing screw (a) and remove the motor cover (6) (fig. F).
• Pull the pressure spring away, snap out and remove worn out carbon
brushes.
• Remove any carbon dust with compressed air.
• Insert new carbon brushes (b) (carbon brushes should easily move
into brush holders) and reinstall pressure spring (fig. G).
• Install the motor cover (6) and tighten the fixing screw (a).
After the carbon brushes are replaced, start the hammer with no
load and wait 1–2 minutes until the carbon brushes fit to the motor
commutator.
Entrust replacement of carbon brushes only to a qualified person.
Only original parts should be used.
All defects should be repaired by service workshop authorized by the
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