Hitachi DH 40MEY Instrucciones De Manejo página 4

English
NOTE
Due to HITACHI's continuing program of research and
development, the specifi cations herein are subject to
change without prior notice.
MOUNTING AND OPERATION
Action
Inserting SDS-max tools
Removing SDS-max tools
Changing tool direction
Selecting the operating mode
Switching on and off
About the power lamp
Speed change
Install the stopper
Using tapershank adapter
Removing tapershank adapter
Mounting core bit
Mounting guide plate and center pin
Selecting accessories*
* For detailed information regarding each tool, contact a
Hitachi authorized service center.
Warming up (Fig. 13)
The grease lubrication system in this unit may require
warming up in cold regions.
Position the end of the bit so makes contact with the
concrete, turn on the switch and perform the warming
up operation. Make sure that a hitting sound is produced
and then use the unit.
CAUTION
When the warming up operation is performed, hold the
side handle and the main body securely with both hands
to maintain a secure grip and be careful not to twist your
body by the jammed drill bit.
ABOUT THE PROTECTION
FUNCTION
This tool has a built-in protection circuit for preventing
damage to the unit in the event of an abnormality. Depending
on the cause of the irregularity, the display lamp with fl ash
and the tool will either shutdown or its operation will be
regulated. In such cases, verify the problem indicated by the
fl ashing and take whatever steps are necessary to correct
the problem. (Table 1)
When pressing the rotation speed selector switch, make
sure the switch is not drawn back.
NOTE
Repair may be required if the display lamp continues to
fl ash after taking all necessary steps to correct the problem.
If the problem persists, contact a Hitachi authorized
service center for repairs.
Display
fl ashing
Figure Page
1 17
Flash
2 17
3 17
4 17
5 17
6 18
7 18
8 18
9 19
10 19
11 19
12 19
– 20, 21
Flash
Flash
Flash
Flash
4
Table 1
lamp Cause
RPM has gradually
decreased due
to the tool's
temperature
increase protection
function detecting
temperatures
approaching the
unit's specifi ed
temperature range
for automatic
or
shutdown.
(Power regulation
function)
* If one or two bars
of the display lamp
are fl ashing, the
power regulation
function will not be
activated.
The tool has shut
down due to internal
temperatures
which exceed the
unit's specifi ed
temperature.
(Temperature
increase protection
function)
The tool has shut
down due to an
overload resulting
from the application
of excessive
pressure to the unit.
(Overload
protection function)
1 Tool fails to
startup or has
shut down due
to the unit being
connected to a
power source
whose voltage is
either too high or
too low.
2 Tool has shut
down due a
voltage signal
read error that
occurred from
the unit's power
cord being
plugged in and
out at short
intervals.
(Circuit protection
function)
Tool fails to startup
or has shut down
due to a sensor
signal read error.
(Control monitoring
function)
Solution
The tool will operate
normally once the
temperature has been
lowered by reducing
the workload.
Continued use
will activate the
temperature increase
protection function
which may result in
automatic shutdown.
(See box below)
Turn off the tool and
allow it to cool down
for about 15 to 30
minutes.
Once the temperature
is down, the unit will
recover when the
rotation speed selector
switch is pressed.
Press the rotation
speed selector switch
to recover. Try to avoid
tasks that will apply
excess pressure to
the unit.
1 Connect the unit
to a power supply
matching the input
voltage specifi ed
on the nameplate.
Press the rotation
speed selector
switch to recover.
2 Allow for an interval
of 3 seconds or
more when plugging
the power cord
in and out. Press
the rotation speed
selector switch to
recover.
Press the rotation
speed selector switch
to recover. Repair may
be required if this error
continuously occurs.