Crown CT22015HX-2 Instruction Manual page 27

• strength of fastening elements;
• type of support (type of washer);
• strength of twisted materials;
• lubrication of threaded connection�
Variants of use of the power tool can be subdivided in
the following types:
• rigid connection - connection of metal parts with
the help of metal washers;
• spring connection - connection of metal parts
using spring washers, disk springs, fastening
elements with the conical fit, etc.;
• soft connection - connection of metal and non-
metal parts, use of soft washers made from lead
or fiber.
In case of rigid connection, the maximum torque is
achieved after a short operating period of the impact
mechanism� The longer operating period of the impact
mechanism will not give better results, but may lead to
the damage of the power tool�
In case of spring or soft connection, the maximum
tightening torque is lower in comparison with the rigid
connection; the longer operating period of the impact
mechanism is required�
You can determine the operating period
of the impact mechanism with the help
of the practical testing. After completing
tightening it is recommended to check
the tightening torque with the help of the torque
indicating wrench.
Screwing the screws (see fig. 12)
[CT22021HX-2, CT22021HX-4]
• To make fastening of screws easier and in order
to prevent cracking of the work pieces, first drill a
hole with a diameter equal to 2/3 of a diameter of the
screw�
• If you are connecting work pieces with the help of
screws, in order to achieve durable joint without getting
cracks, fracturing or layering, take actions shown in
figure 12.
Power tool maintenance / preventive
measures
Before execution of any procedures, centre the re-
verse switch 10.
Battery maintenance instruction
• Charge timely before the battery 13 is completely
exhausted� Stop operation in low power and charge it
immediately�
• Do not overcharge when the battery 13 is full, other-
wise it will shorten the life time�
• Charge battery 13 in the room temperature of 10°C
to 40°C (50°F to 104°F)�
• Charge battery 13 every 6 months without operation
for a long time�
The manufacturer reserves the possibility to introduce changes.
• Replace worn out batteries in time� Decline of
production or a significantly shorter runtime of the
power tool after charging indicates aging of the
battery 13 and the need for replacement� It should
be taken into account that the battery 13 may dis-
charge faster if the works take place in the tempera-
ture below 0°С.
• In case of long time storage without use, it is recom-
mended to store the battery 13 at room temperature, it
should be charged to 50%�
Cleaning of the power tool
An indispensable condition for a safe long-term exploi-
tation of the power tool is to keep it clean� Regularly
flush the power tool with compressed air thought the
ventilation slots 9�
After-sales service and application service
Our after-sales service responds to your questions
concerning maintenance and repair of your product as
well as spare parts� Information about service centers,
parts diagrams and information about spare parts can
also be found under: www.crown-tools.com.
Transportation of the power tools
• Categorically not to drop any mechanical impact on
the packaging during transport�
• When unloading / loading is not allowed to use any
kind of technology that works on the principle of clamp-
ing packaging�
Li-Ion batteries
The contained Li-Ion batteries are subject to the Dan-
gerous Goods Legislation requirements� The user can
transport the batteries by road without further require-
ments�
When being transported by third parties (e�g�: air trans-
port or forwarding agency), special requirements on
packaging and labelling must be observed� For prepa-
ration of the item being shipped, consulting an expert
for hazardous material is required�
Dispatch batteries only when the housing is undam-
aged� Tape or mask off open contacts and pack up the
battery in such a manner that it cannot move around
in the packaging� Please also observe possibly more
detailed national regulations�
Environmental protection
Recycle raw materials instead of dispos-
ing as waste.
Power tool, accessories and packaging
should be sorted for environment-friendly re-
cycling�
The plastic components are labelled for categorized
recycling�
These instructions are printed on recycled paper man-
ufactured without chlorine�
English
27