Bosch 11230EVS Operating/Safety Instructions Manual page 8

BM 2610968979 8/01 8/22/01
SELECTOR LEVER
The selector lever allows the tool to be set
for various applications as listed in the
following chart, (Fig. 3).
When using demolition or chipping bits such
as bull points, chisels, spades, gouges, etc.
the "Hammer Only" mode must be selected.
SELECTOR LEVER - "VARIO-LOCK"
The vario-lock can be set in any one of twelve
positions (30˚ increments). Choose a position
which is best suited for your operation.
Drilling/Hammering:
used for drilling with solid
carbide bits and core bits
SLIP CLUTCH
The tool has a internal pre-set slip clutch.
The output spindle will stop rotating if the
accessory binds and overloads the tool.
AUXILIARY HANDLE
The tool must be supported with the
auxiliary handle, which can be swiveled 360˚.
To reposition and/or swivel the handle,
loosen the hand grip, move the handle to the
For the best penetration rates in concrete,
run the tool with a steady pressure, but do
not use excessive force as this will decrease
the efficiency of the tool.
All grease packed hammers require a short
period of time to warm up. Depending on the
room temperature, this time may vary from
approximately 15 seconds (90˚F) to 2
minutes (32˚F). A new hammer requires a
break-in period before full performance is
realized. This period may require up to 5
hours of operation.
11:14 AM Page 8
When using demolition or chipping bits such
as bull points, chisels, spades, gouges, etc.
the "Hammer Only" mode must be selected.
Depress release button and turn the
selector lever, to the "vario-lock" setting.
Next, rotate the locking sleeve, along with
the accessory, to the desired position. Then
turn the selector lever to the "hammer only"
setting and slightly turn the locking sleeve to
have it automatically lock into a definite
position.
FIG. 3
Vario-Lock:
allows chisel to be set in one of 12
positions (right or left "0" position)
O
desired position along the barrel and
securely retighten the hand grip.
Your drilling depth can be pre-set and/or
repeated by using the depth gauge.
Setting depth: After the auxiliary handle is
installed, slide the depth gauge to desired
depth and securely tighten wing knob.
"TOOL TIPS"
A rotary hammer is likely to be the most
expensive portable tool at the construction
job. The long wear and efficient operation of
the BOSCH hammers will more than justify
the cost for tools of this type. As earlier
pointed out, sharp accessories as well as
clean air vents are necessary for efficient
operation. Establish and follow a set
maintenance program.
-8-
Hammering Only:
used for chipping
and demolition work
DEPTH GAUGE