ICON Enterprises H 70SD - Manual (Page 22)

20
English
(3) Clamp the accessory into place by bringing the
retainer to the clamp position. To make sure that
the accessory is properly mounted, pull on the
accessory. (Fig. 2)
⅜ Mounting standard hexagonal shanks and retaining
groove shanks without collars.
(1) Clean, then smear the accessory shank portion
with grease or machine oil.
(2) Move the retainer to position A. Align the
accessory shank portion so that its recessed
portion is under clamp and seat the accessory,
such as a bull point, a cutter, etc. in the hexagonal
hole in the front cover (See Fig. 3).
(3) Clamp the accessory into place by bringing the
retainer to clamp position B. To make sure that
the accessory is properly mounted, pull on the
accessory. (Fig. 4)
NOTE:
When removing the accessory, such as a bull point, a
cutter, etc, carry out the above procedures in reverse.
HOW TO USE THE HAMMER
1. Pull the trigger switch after applying the tip of the bit
to the crushing position.
In some cases, it is necessary to thrust the tip of the
bit against the crushing position forcibly in order to
begin the striking motion.
This is not due to malfunction of the power tool. It
means that the safe guard mechanism against no-load
striking is working.
2. Operate this Demolition Hammer by utilizing its empty
weight. The performance will not be better even if it
is pressed or thrust forcibly against the work surface.
Hold this Demolition Hammer with a force just
sufficient to counteract the reaction. (Fig. 5)
GREASE REPLACEMENT
This Demolition Hammer is of full air-tight construction
to protect against dust and to prevent lubricant leakage.
Therefore, this Demolition Hammer can be used without
lubrication for long periods. Replace the grease as
described below.
Grease Replacement Period
After purchase, replace grease after every 6 months of
usage. Ask for grease replacement at the nearest
authorized service center.
MAINTENANCE AND INSPECTION
CAUTION:
Be sure to swith OFF and disconnect the attachment
plug from the receptacle to avoid a serious accident.
1. Inspecting this Demolition Hammer
Since use of a dull accessory, such as a bull point, a
cutter, etc. will degrade efficiency and cause possible
motor malfunction, sharpen or replace with a new one
as soon as abrasion is noted.
2. Inspecting the mounting screws:
Regularly inspect all mounting screws and ensure that
they are properly tightened. Should any of the screws
be loose, retighten them immediately. Failure to do
so could result in serious hazard.
3. Inspecting the retainer (Fig. 1, Fig. 2, Fig. 3 and Fig. 4)
The retainer may become loose due to excessive use.
Always, pay attention to its proper functioning to
securely hold the accessory shank portion. If any wear
and tear is found, bring this Demolition Hammer to
an authorized service center for maintenance service.
4. 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.
5. Inspecting the carbon brushes (Fig. 6)
The Motor employs carbon brushes which are
consumable parts. When they become worn to or
near the “wear limit”, it results in motor
trouble. When an auto-stop carbon brush is equipped,
the motor will stop automatically. At that time, replace
both carbon brushes with new ones which have the
same carbon brush Numbers shown in the Fig. 6. In
addition, always keep carbon brushes clean and
ensure that they slide freely within the brush holders.
6. Replacing carbon brushes:
Loosen the screws (Hexagon socket hd. bolt M4
×12)
of the cap covers, then remove the cap covers (Fig.
7). After removing the brush caps, the carbon brushes
can be removed.
After replacing the carbon brushes, tighten the brush
caps, then mount the cap covers securely.
7. Service parts list
A: Item No.
B: Code No.
C: No. Used
D: Remarks
CAUTION
Repair, modification and inspection of Hitachi Power
Tools must be carried out by an Hitachi Authorized
Service Center.
This Parts List will be helpful it presented with the
tool to the Hitachi Authorized Serivde Center when
requesting repair or other maintenance.
In the operation and maintenance of power tools, the
safety regulations and standards prescribed in each
country must be observed.
MODIFICATIONS:
Hitachi Power Tools are constantly being improved
and modified to incorporate the latest technological
advancements.
Acccordingly, some parts (i.e. code numbers and/or
design) may be changed without prior notice.
NOTE
Due to HITACHI’s continuing program of research and
development, the specifications herein are subject to
change without prior notice.
Information concerning vibration
The measured values were determined according to
EN50144.
The typical weighted root mean square acceleration
value: 14 m/s
2