Erbauer ERB121SDS, User Manual

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6 kg SDS-MAX ROTARY HAMMER
8. OPERATION MODE SELECTION
(See Fig. 12)
This must only be adjusted when the ON/OFF
switch (7) has been released and the drill is not
rotating.
Rotate mode selector switch (6) and rotate the
switch to select
1) Hammer drilling – hammer drilling in con-
crete, stone etc.
2) Chiselling – chiselling/breaking in concrete
and masonry.
3) Central Adjusting Position – adjusting the
chisel position. Insert and fix the chisel in the
best position for the job in hand and then re-
set mode switch (6) to Chisel Position.
Note.
During each switching between opera-
tion modes turn the bit slightly by hand left
wise and right wise until it is locked.
9. HAMMER DRILLING ACTION
(See Fig. 13)
Use good quality SDS-Max drill bits. Select the
‘Hammer drilling’ position on the operation
mode selector.
Apply moderate pressure during operation (ap-
proximately 100-150N)! Higher pressure will not
increase efficiency when drilling or chiselling,
but will lead to decreasing the operation life of
the machine and shortening the period between
routine servicing.
This Rotary Hammer is fitted with an overload
warning light (Fig. 14), which will glow continu-
ously red, if the machine is overloaded by more
than 30%.
The machine must not be operated continuous-
ly in this mode.
10. BUILT-IN DUST PROTECTION
(See Fig. 15)
The protective ring (1) preserves the tool socket
from dirt during operation. While inserting tool
bits, take care not to damage the protective
ring.
Fig. 15
Fig. 16
Fig. 13
Fig. 14