Worx Professional WU388, Operating Instructions Manual

9

EN

OPERATING 

INSTRUCTIONS

NOTE: Before using the tool, read the 

instruction book carefully.

INTENDED USE

The machine is intended for hammer drilling in 

concrete, brick and stone. It is also suitable for drilling 

without impact in wood, metal, ceramic and plastic.

BEFORE PUTTING INTO OPERATION

A) CHARGING THE BATTERY PACK 

The battery pack charger supplied is matched to the 

Li-ion battery installed in the machine. Do not use 

another battery charger. 

The Li-ion battery pack is protected against deep 

discharging. When the battery pack is empty, the 

machine is switched off by means of a protective 

circuit: The chuck no longer rotates. 

In a warm environment or after heavy use, the 

battery pack may become too hot to permit charging. 

Allow time for the battery pack to cool down before 

recharging. 

When the battery pack is charged for the first time 

and after prolonged storage. The battery pack will 

accept a 100% charge after several charge and 

discharge cycles.

B) TO REMOVE OR INSTALL BATTERY PACK (SEE 

FIG. A)

Depress the battery pack release button to release 

and slide the battery pack out from your tool. After 

recharge, slide it back into your tool. A simple push 

and slight pressure will be sufficient. 

OPERATION

1. INSERTING AND REMOVING DRILL BIT IN SDS   

Take care that the dust protection cap (2) is not 

damaged when changing tools.

— INSERTING 

Clean and lightly oil the bit before inserting. Insert the 

dust-free bit into the bit holder with a twisting motion 

until it latches.

The bit locks itself. Check the locking by pulling on 

the tool. 

— REMOVING 

Retract back the bit holder locking sleeve (3) and pull 

out the bit. 

WARNING

！

Your new WORX Rotary Hammer Drill 

generates powerful forces to get your job done 

quickly and effectively. These forces may cause 

inferior quality SDS bits to break and jam in the 

chuck

，

We therefore recommend that only high 

quality SDS bits be used with this tool. 

2. AUXILIARY HANDLE (SEE FIG. B)

Slide the handle onto the hammer and rotate to the 

desired working position. To clamp the auxiliary 

handle rotates the handle clockwise. To loosen the 

auxiliary handle, rotate the handle counter-clockwise.

Warning: Always use the auxiliary handle. 

3. ADJUSTABLE DEPTH GAUGE(SEE FIG. B)  

Loosen the depth gauge by rotating the handle 

counter-clockwise. Slide the depth gauge until the 

distance between the depth gauge end and the drill 

bit end is equal to the depth of hole/screw you wish 

to make. Then clamp the depth gauge by rotating the 

handle clockwise.

4. ON/OFF SWITCH (SEE FIG. C)

Depress the On/Off switch (5) to start and release it 

to stop your tool.   

— ON/OFF SWITCH WITH VARIABLE SPEED 

CONTROL 

Depress the On/Off switch to start and release it to 

stop your tool. This tool has a variable speed switch 

(5) that delivers higher speeds with increased trigger 

pressure or delivers lower speeds with reduced 

trigger pressure - speed is controlled by varying the 

pressure applied to the switch. 

5. SWITCH LOCK (SEE FIG. C)

The switch trigger can be locked in the OFF position. 

This helps to reduce the possibility of accidental 

starting when not in use. To lock the switch trigger, 

place the direction of rotation control in the center 

position. 

6. FORWARD AND REVERSE ROTATION CONTROL 

(SEE FIG. C)

Forward rotation: Push the forward and reverse 

rotation control to the left “ 

“, for drilling 

Reverse rotation: Push the forward and reverse 

rotation control to the right ” 

 “ , for removing the 

drill bits.       

WARNING:

 Never change the direction of rotation 

while the tool is rotating, wait until it has stopped.   

7. AUXILIARY FUNCTION ON TILE 

1)  Press ON/OFF switch to see the light is on or off. 

Light on indicates the auxiliary function is on, and light 

off indicate the auxiliary function is turn off.  

2)  When operating on the tile, press the auxiliary 

function button on tile (10) first, the green light on 

means that auxiliary function is on, then half-press 

switch, begin pulse auxiliary operation. Until the glaze 

of tile is broken,  press the ON/OFF switch to the 

bottom and begin the drilling .

3) When operating on things rather than tile, keep the 

auxiliary function button closed, to insure the high 

efficiency when drilling.

Note: 

  Auxiliary function on tile avoid the unexpected 

split of tile. This auxiliary function take the place of 

previous pre-drilling by glass drill on tile.

  The auxiliary function on tile is only suitable to 

be used under the hammer drilling position. When 

operating under drilling/chiseling/ Adjust the chuck 

angle mode, make sure to turn the auxiliary function 

off . 

8. FUNCTION MODE SELECTION (SEE FIG. D)

The operation of the gearbox for each application 

is set with the function selector dial (4). To change 

between functions, depress the unlocking button (a) 

and rotate the selector to the desired operating mode.