IVT RHM-900 Operating/Safety Instructions Manual page 7

required speed can be selected (also while running)
The required speed depends on the material and
can be determined with practical trials.
Drilling, impact drilling or chiseling
(RHM-900 – RHM-1100)
This Rotary Hammer is able to drill and chisel at a
time, or using at least one of two functions.
Drilling only
Your hammer drill is equipped with a hammer stop
facility for smooth drilling.
To activate the drilling function, turn the impact
drilling knob (3) OFF (clockwise to position), and
the hammer/drilling knob (2) in "B" position.
Hammering only
You can deactivate the
drilling action of the
hammer drill when
using it for chiseling
work.
To do so, turn the
hammer/drilling knob
(2), in "A" position and
the impact drilling
knob (3) on ON position.
Rotation with hammering
To do so, turn the hammer/drilling knob (2), in "B"
position and the impact drilling knob (3) on ON
position.
C D
(D+F) must be selected.
Hammering only
A
B
(RHM-1500)
Rotation with
hammering
For percussion drilling
in concrete, masonry,
etc., the "rotation with
hammering" mode
Manual instruction | Rotary Hammer
When using demolition
or chipping bits, such
as bull points, chisel,
spades, gouges, etc.,
the "Hammering Only"
mode (C+F) must be
selected.
Drilling only
For non-percussion drilling operations in wood,
synthetics, metal, the "drilling only" mode (D+E)
must be selected.
WARNING: when the hammer is drilling,
you will require a low pressure. Too
much pressure will place unnecessary
load on the motor. Check the drill bits regularly.
Re-sharpen or replace blunt drill bits.
Manteinance
Before any work on the machine itself, pull the
mains plug.
General Rules
• Keep your machine clean at all time
• Never use caustic agents to clean the plastic
parts.
• At the end of your work, to prevent dust deposits
you should use compressed air (max 3 bar) to clean
out the ventilation slots.
• Check the carbon brushes regularly (dirty or
worn carbon brushes result in excessive sparking
and speed faults).
• This tool requires no hourly or daily lubrication
because it has been proper lubricated and is ready
to use. It is recommended to regrease tools with
gears with a special gear lubricant at every brush
change.
Cleaning
• To avoid accidents always disconnect the
tool from the power supply before cleaning or
performing any maintenance. The tool may be
cleaned most effectively with compressed dry air.
Always wear safety glasses when cleaning tools with
compressed air.
• For safe and proper working, ventilation
openings and switch levers must be kept clean and
free of foreign matter. Do not attempt to clean by
inserting pointed objects through openings.
• Certain cleaning agents and solvents damage
plastic parts. Some of these are: gasoline, carbon
tetrachloride, chlorinated
7
E
F
cleaning solvents,
EN