6 ENGLISH
Indicator lamp
The power-ON indicator lamp lights up in green when
the tool is plugged.
If the indicator lamp does not light up, the mains cord or
the controller may be malfunction.
The indicator lamp lights up but the tool does not start
even if the tool is switched on, the carbon brushes may
be worn out, or the controller, the motor or the switch
may be malfunction.
The service indicator lamp flickers up in red when the
carbon brushes are nearly worn out to indicate that the
tool needs servicing.
After approx. 8 hours of use, the motor will automati-
cally be shut off.
►
Fig.2:
1.
Power-ON indicator lamp (green)
2.
Service indicator lamp (red)
Electronic function
The tool is equipped with the electronic functions for
easy operation.
•
Soft no-load rotation function
(For Model HM1511, HM1512 only)
Blows at no load per minute becomes smaller than
those on load in order to reduce vibration under no
load, but this does not show trouble.
Once operation starts with a bit against concrete,
blows per minute increase.
When temperature is low, the tool may not have
this function even with the motor rotating.
•
Soft start
The soft-start function minimizes start-up shock,
and makes the machine start smoothly.
ASSEMBLY
CAUTION:
Always be sure that the tool is
switched off and unplugged before carrying out
any work on the tool.
Side handle (auxiliary handle)
CAUTION:
Always use the side handle to
ensure safe operation.
CAUTION:
After installing or adjusting the
side handle, make sure that the side handle is
firmly secured.
The side handle can be swung 360° on the vertical and
secured at any desired position.
Loosen the clamp nut to swing the side handle to
a desired position, and then tighten the clamp nut
securely.
►
Fig.3:
1.
Side handle
2.
Clamp nut
Installing or removing the bit
Grease
Clean the shank end of the bit and apply grease before
installing the bit.
Coat the shank end of the bit beforehand with a small
amount of grease (about 0.5 - 1 g). This chuck lubrica
-
tion assures smooth action and longer service life.
►
Fig.4:
1.
Shank end
2.
Grease
Installing the bit
CAUTION:
Always assure that the bit is securely
retained by attempting to pull the bit out of the tool
holder after completing the above procedure.
For Model HM1511, HM1501 only
With the notched portion on the shank of the bit fac
-
ing toward the tool retainer, insert the bit into the tool
holder as far as it will go. Then pull out and turn the tool
retainer 180° to secure the bit.
►
Fig.5:
1.
Bit
2.
Tool retainer
3.
Tool holder
For Model HM1512, HM1502 only
This tool accepts bits either with or without a collar on
its shank.
►
Fig.6:
1.
Bit with collar
2.
Bit without collar
To install the bit, follow either procedure (1) or (2)
described below.
NOTICE:
The bit without a collar cannot be retained
by procedure (1).
(1)
For bits with a collar
Pivot the tool retainer as shown in the figure.
Insert the bit into the tool holder as far as it will go.
When inserting the bit
►
Fig.7:
1.
Bit
2.
Tool retainer
3.
Tool holder
To secure the bit, return the tool retainer as shown
in the figure.
When the bit is retained
►
Fig.8:
1.
Bit
2.
Tool retainer
(2)
For bits without a collar
Pivot the tool retainer as shown in the figure.
With the notched portion of the bit facing the tool
retainer shaft, insert the bit into the tool holder as
far as it will go.
When inserting the bit
►
Fig.9:
1.
Bit
2.
Tool retainer
3.
Tool holder
To secure the bit, pivot the tool retainer as shown
in the figure.
When the bit is retained
►
Fig.10:
1.
Bit
2.
Tool retainer
Removing the bit
To remove the bit, follow the installation procedure in
reverse.
