5
intenDeD use
Demolishing concrete, chiseling concrete,
grooving, bar cutting, and driving piles.
Installation of piping and wiring, sanitary
facility installation, machinery installa-
tion, water supply and drainage work,
interior jobs, harbor facilities, and other
engineering works.
1.
Power source.
Ensure that the power source to be uti-
lized conforms to the power requirements
specified on the product nameplate.
2.
«On\Off» switch.
Ensure that the power switch is in the
OFF position. If
the plug is connected to a receptacle
while the power switch is in the ON posi-
tion, the power tool will start operating
immediately, inviting serious accident.
3.
Extension cord.
When the work area is removed from the
power source. Use an extension cord of
sufficient thickness and rated capacity.
The extension cord should be kept as
short as practicable.
4.
УREPLACING THE TOOL.
Clean and grease the tool shank. Install
the tool shank into hexagonal hole on the
front cover.
Clamp the tool.
HoW to use
1.
After placing the tip of the tool
on concrete surface, switch ON.
In some cases, it is necessary to thrust the
tip of the bit against the crushing posi-
tion forcibly in order to begin the striking
motion.
2.
By utilizing the empty weight
of the machine and by firmly holding
the hammer by both hands, you can ef-
fectively control the subsequent recoil
motion. Proceed at a moderate work-rate,
the use of too much pushing force will
impair efficiency.
HoW to replace Grease
Please contact the nearest service center
ZENIT for grease replacement.
Maintenance anD inspection
1.
INSPECTING THE TOOLS.
Since use of a dull tool will cause motor
malfunctioning and degraded efficiency,
replace the tool with a new one or re-
sharpen without delay when abrasion is
noted.
2.
Inspecting the screws
Regularly inspect all mounting screws
and ensure that they are properly tight-
ened. Should any of the screws be loose,
retighten them immediately. Failure to do
so could result in serious hazard.
3.
Maintenance of the motor.
The motor unit winding is the very
“heart” of the power tool. Exercise due
care to ensure the winding does not
become damaged and/or wet with oil or
water.
4.
Inspecting the carbon brushes.
The motor is equipped with carbon
brushes, which wear with time. When a
brush reaches the wear limit, the mo-
tor may malfunction. If the engine is
equipped with a disengaging brush, it
will automatically turn off. In this case
replace both carbon brushes. Keep the
brushes clean and ensure that brushes
move freely within the brush holders.
CAUTION
When using the drill follow these rules:
