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20 51091C/51090C St ep 2 : In st all the inn e r p r essu r e pla t e w i thou t thread on the spindle, with a side with step down wards, and get it caught on the spindle Step 3: Install the wheel on the inner pressure p…

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2. Installation of shield and wheel (Figure C)

WARNING

The cut-off wheel is equipped with a fully-closed shield

and the grinding wheel blade is equipped with a semi-

closed shield. Moreover, the diameter of wheel shall

match that of shield.

Installation or removal of shield (see Figure D)

WARNING

When the tool is used, the shield shall be mounted on

the tool and the closed side of shield shall always face

the operator!

Installation of shield:

Step 1: open the shield lock (1);

Step 2: Align the bump (2) on the shield with the notch

on the gearbox;

Step 3: Press down the shield until the shield is

inserted into the gearbox, and the bump (2) is engaged

in the groove on the gearbox (3);

Step 4: Rotate the shield between the output shaft and

the operator. Select an appropriate angle, and then

lock the buckle (1).

Adjustment of shield: (Figure E)

When the shield is delivered, it has been pre-adjusted

to a position where it can be tightened. If the shield

becomes loose after a period of use, tighten the screw

(1) in the figure with the shield tightened. Removal of

shield:

In reverse order of installation: first loosen the buckle,

rotate the shield, and align the bump on the shield

with the notch on the gearbox and pull out the shield

vertically.

Installation and removal of wheel (see Figure F.G.H)

WARNING

When the tool is equipped with a wheel, be sure to use

the wheel shield. The wheel may be crushed during

use. The shield may help reduce the risk of personal

injury.

Installation of wheel:

Step 1: Turn off the switch and pull out the battery

pack

M N

inner pressure plate

external pressure plate

The thickness of disk is greater than 3MM

inner pressure plate

external pressure plate

The thickness of disk is less than 3MM

51091C/51090C

Step 2: Install the inner pressure plate without thread

on the spindle, with a side with step downwards, and

get it caught on the spindle

Step 3: Install the wheel on the inner pressure plate

Step 4: Drive the threaded outer pressure plate

clockwise into the spindle

Step 5: Press and hold the spindle lock button (1

in Figure G) to prevent the spindle from rotating.

Tighten the outer pressure plate clockwise with the

locking wrench(Figure H).

NOTE

(See Figure I.J)

When the thickness of wheel is greater than 3 mm,

the side of outer pressure plate with the center boss

is in contact with the wheel: when the thickness of

wheel is less than or equal to 3 mm, the side of the

outer pressure plate with the center groove is in

contact with the wheel.

Removal of wheel:

WARNING

The axis lock can only be used when the spindle

stops rotating.

After confirming the shutdown and unplugging the

battery pack, repeat the above steps in reverse

order.

OPERATION

WARNING

Do not operate the tool too hard. Excessive pressure

may cause damage to the wheel.

If the tool falls during the operation, be sure to

replace the wheel.

Never hit the workpiece with a backing pad or

grinding wheel.

The bounce and blockage of wheel shall be avoided

to prevent the wheel from rebounding, especially for

the processing of corner or sharp edge. Timber saw

blade and other saw blades are strictly prohibited.

The angle grinder with these saw blades will

frequently bounce up, and it is prone to runaway and

cause personal injury.

NOTE

The maximum cutting depth is 5mm. Adjust the

pressure on the tool so that the tool does not slow

down during operation.

After the operation, be sure to close the tool and

lower the tool only after the wheel has completely

stopped.

When the tool keeps operating until the battery is

exhausted, leave the tool for 15 min before replacing

the new battery pack.

3. Switch (see Figure K)

Grasp the machine and the auxiliary handle, push the

lock button (1) forward, and then press the switch

trigger to start the machine.

4. Soft start

The machine has a soft start function. After the

start, the speed of machine gradually increases until

the maximum rotating speed. The comfort of start is

improved.

5. Electronic brake

During the operation, when the switch is released,

the electronic brake will start. Normally, the machine

will stop in 2S, and occasionally it may be greater

than 2S.

6. Grinding operation (Figure L)

NOTE

According to the material of workpiece, the wheel

of different material shall be selected, and the

recommended diameter is adopted. The maximum

rotating speed of wheel shall be more than 13000

rpm. The inner hole shall fit the pressure plate

tightly. Keep the working environment and workpiece

clean and tidy.

Place one hand on the outer casing, and the other on

the side handle, hold and start the tool, wait for the

tool to reach the maximum rotating speed, slowly

place the wheel on the workpiece, and then move

V_SC_5109NC_202104

the wheel smoothly.

Usually the edge of wheel shall be at an angle of

about 20 degrees to the surface of workpiece. When

the work is finished, separate the machine from the

workpiece and then release the switch.

NOTE

If the grinding lasts too long at one place on the

surface of workpiece, or if the angle between the

machine and workpiece is too large, the groove will

be ground on the surface of workpiece.

WARNING

During the operation, do not squeeze the wheel or

press the machine excessively. Otherwise the wheel

has the risk of rupture and may cause the injury;

Always use the accompanied guard, and do not use

the guard or be sure to carry the guard;

Never use the cut-off wheel for grinding.

7. Cutting operation (see Figure M)

NOTE

According to the material of workpiece, the wheel

of different material shall be selected, and the

recommended diameter is adopted. The maximum

rotating speed of wheel shall be more than 13000

rpm. The inner hole shall fit the pressure plate

tightly. Keep the working environment and workpiece

clean and tidy.

Place one hand on the outer casing, and the other on

the side handle, hold and start the tool, wait for the

tool to reach the maximum rotating speed, slowly

place the wheel on the workpiece, and exert a slight

force to improve the cutting efficiency.

Once the incision is formed, do not change the

cutting angle. Otherwise, the wheel will be easily

deformed and broken, causing a risk of injury.

When the work is finished, separate the machine

from the workpiece and then release the switch.

WARNING

Do not squeeze the wheel or apply an excessive

pressure. Avoid the deep cutting, which will increase

the load, make the wheel easy to twist or stick and

increase the possibility of rebound or damage to

the wheel. The wheel may break and the motor may

overheat.

Always use the accompanied guard, and do not use

the guard or be sure to carry the guard;

Never use the cut-off wheel for grinding.

Never initiate a cutting operation in the workpiece.

Please carefully insert the wheel into the surface of

cutting workpiece after it reaches the full speed. If

the electric tool starts in the workpiece, the wheel

may stick, move or rebound.

Do not change the angle of wheel during the cutting

operation. Applying a side pressure to the cut-

off wheel will cause the wheel to crack and break,

resulting in the serious personal injury.

8. Air filter net (Figure N)

To prevent the debris from entering the inside of

machine, a filter net is set at the air inlet. After the

machine is used or stored for a long time, please pull

it down and clean it.

9. Battery level indication

When the machine switch is pressed, the battery

indicator will stay on for 5s. The remaining capacity

of battery pack may be determined according to the

following table.

0-25%

25-50%

50-75%

75-100%

LED display Remaining battery