Slip Clutch; Dust Extraction - Bosch RH540M Consignes De Fonctionnement/Sécurité

2610048695.qxp_RH540M RH540S 10/4/17 9:39 AM Page 9
TRIGGER "ON-OFF" SWITCH
To turn the tool "ON" squeeze the trigger switch.
To turn the tool "OFF", release the trigger switch,
which is spring loaded and will return to the
"OFF" position automatically.
To increase switch life, do not turn switch on and
off while tool is under load.
VARIABLE SPEED DIAL
Your tool is equipped with a variable speed dial.
The speed and impact force can be adjusted by
rotating the dial. Higher speeds and impact force
work best for faster penetration when drilling or
chiseling in hard masonry material. Slower
speeds work best to reduce breakout when bits
exit material being drilled or chiseling material
such as plaster or tile (Fig. 1).
Regardless of the pressure applied on the trigger,
the tool will not operate any faster than maximum
speed setting selected.
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.
"TOOL TIPS"
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 hammers require a short period of time to
warm up. Depending on the room temperature,
this time may vary from approximately 15
For selection of dust collection systems and
operating instructions, see the Operating /
Safety Instructions for 'Dust Extraction
Operating Instructions
The selector lever allows the tool to be set for
various applications as listed in the following
chart, (Fig. 4).
When using demolition or chipping bits such as
bull points, chisels, spades, gouges, etc. the
"Hammer Only" mode must be selected.
The vario-lock can be set in any one of twelve
positions (30˚ increments). Choose a position
which is best suited for your operation. The
Vario-Lock position is intended for use with
chipping bits such as bull points, spades,
gouges, etc.
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. 4
Vario-Lock:
allows chisel to be set in one of 12
positions (right or left "0" position)
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.
A combination 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.

Dust Extraction

Attachments for Hammers and Hammer Drills'
included with your tool or with the dust
extraction attachment.
-9-
SELECTOR LEVER
SELECTOR LEVER - "VARIO-LOCK"
Hammering Only:
used for chipping
and demolition work