CROWN CT10034 - Инструкция по эксплуатации - Страница 22

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English

Impact drilling:

To switch to this operation mode, turn 

switch 

5

 so that the Impact drilling sign coin-

cides with the mark on the body�

[CT10120]

Drilling, screwing, unscrewing:

To switch to this operation mode, move 

switch 

5

 right to the stop�

Impact drilling:

To switch to this operation mode, move 

switch 

5

 left to the stop�

One can switch to another operation mode without 

stopping the power tool, simply decrease pressure 

applied to it to some extent.
Stepless speed adjustment

Speed is controlled from 0 to maximum by 

pressing force of on / off switch 

9

� Weak 

pressing results in low revolutions, which 

enable a smooth power tool switch-on�

Speed selector thumbwheel

Use speed control 

8

 to set required revolutions and 

impact frequency�

•

Push on / off switch 

9

 and lock it in the position with 

lock-on button 

10

�

•

Set the needed speed�

The required speed is dependent on the material and 

can be determined with practical trials�

When operating your power tool at a low speed for a long 

time, it has to be cooled down for 3 minutes� To do it, set 

a maximum speed and leave your power tool to run idle�

Step speed selector switch 

Attention: one can only change the revo

-

lutions per minute range after the engine 

fully stops.
The first speed

 - you can find the values of 

the revolutions per minute range in the tech-

nical specifications table.

The  second  speed

  -  you  can  find  the  val

-

ues of the revolutions per minute range in 

the technical specifications table.

Changing the rotational directions

Change  the  direction  of  rotation  only 

after a full stop of the motor, acting oth

-

erwise  may  cause  damage  to  the  power 

tool.

Rotation  to  the  right  (drilling,  screwing  in)

 - move 

the rotational direction switch 

7 

to the right�

Rotation  to  the  left  (unscrewing)

 - move the rota-

tional direction switch 

7

 to the left�

Recommendations  on  the  power  tool 

operation

Drilling (see fig. 8-11)

•

Grease the drill bit regularly when drilling holes in 

metals (except drilling non-ferrous metals and their al-

loys)�

•

When drilling hard metals, apply more force to the 

power tool and lower the rotation speed�

•

When drilling large diameter holes in metal, first drill 

a hole with a smaller diameter and ream it till the nec-

essary diameter (see fig. 8).

•

In order to avoid splitting of the surface at an exit 

point of a drill bit when drilling holes in wood, follow the 

instructions shown in figure 9.

•

In order to decrease dust production when drilling 

holes in walls and ceilings, take actions indicated in 

fig. 10.

•

When drilling holes in glazed ceramic tiles, in order 

to improve the drill centering accuracy and to save the 

glaze from damage, apply adhesive tape to the pre-

sumed hole center and drill after that (see fig. 11). Start 

drilling at lower speed increasing it as the hole deep-

ens� 

Caution:  drill  tiles  in  the  impactless  drilling 

operation mode only.
Impact drilling

During the impact drilling, the result does not depend 

on the pressure applied to the power tool - this is 

caused due to the peculiarities in the impact mecha-

nism design� That is why you should not apply exces-

sive pressure to the power tool - it can jam the drill and 

overload the engine�

Screwing the screws (see fig. 12)

•

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 get-

ting cracks, fracturing or layering, take actions shown 

in figure 12.

Power  tool  maintenance  /  preventive 

measures

Before carrying out any works on the power tool it 

must be disconnected from the mains

�

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 

6

�

After-sales service and application service

Our after-sales service responds to your questions 

concerning maintenance and repair of your product as 

5