5
FUNCTIONAL DESCRIPTION
CAUTION:
•
Always be sure that the tool is switched off and
unplugged before adjusting or checking function
on the tool.
Switch action
CAUTION:
•
Before plugging in the tool, always check to see
that the switch lever actuates properly and returns
to the "OFF" position when released.
Fig.1
To start the tool, simply squeeze the switch lever.
Release the switch lever to stop.
For model HM1812 only
NOTE:
•
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 and
there is less fluidity in grease, the tool may not
have this function even with the motor rotating.
Indicator lamps
Fig.2
The green power-ON indicator lamp lights up when the
tool is plugged. The indicator lamp is lit 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 ON/OFF switch may be malfunction. The red service
indicator lamp flickers up when the carbon brushes are
nearly worn out to indicate that the tool needs servicing.
After some period of use, motor will automatically be
shut off.
ASSEMBLY
CAUTION:
•
Always be sure that the tool is switched off and
unplugged before carrying out any work on the
tool.
Installing soft grip
Fig.3
Soft grip is NOT installed before factory shipment.
Install soft grip securely.
Fig.4
Set the triangle alignment marks on the hammer body
and on the soft grip when installing the soft grip.
Installing or removing the bit
(optional accessory)
CAUTION:
•
Always assure that the bit is securely retained by
attempting to pull the bit out of the tool holder after
installing the bit.
•
Follow the below 2 installation methods in
accordance with the 2 different types of bits. If
inappropriate installation method is selected, the
bit cannot be secured.
Fig.5
This tool accepts bits either with or without a collar on
its shank.
To install the bit, follow either procedure (1) or (2)
described below.
(1) For bits with a collar
Fig.6
Pivot the tool retainer downward (approx. 60 degrees).
Insert the bit into the tool holder until it stops. Return the
tool retainer and secure the bit.
(2) For bits without a collar
Fig.7
Pivot the tool retainer upward (approx. 60 degrees).
Face the notched portion of the bit upward. Insert the bit
into the tool holder until it stops. Pivot the tool retainer
further until it stops at the tool holder.
To remove the bit, follow the installation procedure in
reverse.
OPERATION
Chipping/Scaling/Demolition
CAUTION:
•
Keep well-balanced posture when holding the
heavy tool before / during / after operation to avoid
personal injuries.
•
Secure debris in case of breaking it into smaller
pieces.
•
Hold the tool firmly with both hands. Turn the tool
on and apply slight pressure on the tool so that the
tool will not bounce around, uncontrolled. Pressing
very hard on the tool will not increase the
efficiency.
•
Do not pull out the tool if stuck. Instead, break the
work around the bit tip.
•
Be sure to place the tool on the stable floor or
ground after use.
Fig.8
Always use the soft grip (auxiliary handle) and firmly
hold the tool by both side grip and switch handle during
operations.
Summary of Contents for HM1802
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