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OPERATION MODE SWITCH
The rotary hammer drill features 4-position operation mode switch (4) and allows to drill without impact,
with impact or chiselling.
Press the switch lock button ‘a’ prior to change of position of the operation mode switch (4) (g. C).
Pos 0 ● = position for setting chisel in desired position (chisel symbol)
Pos 1 ● = regular drilling/screwing (symbol of a drill)
Pos 2 ● = impact drilling (symbol of a drill and a hammer)
Pos 3 ● = chiselling (symbol of a chisel and a hammer)
Do not try to change position of the working mode switch when motor of the rotary hammer drill is
operating. Such action may cause serious damage of the rotary hammer drill or injury of the user.
Impact drilling and chiselling requires to slightly press the rotary hammer drill. Too great pressure would
cause unnecessary, excessive load of the motor. Check technical condition of the working tools regularly.
Sharpen or replace working tools when necessary.
LEFT RIGHT DIRECTION OF ROTATION
Choose direction of rotary hammer drill spindle rotation with the direction selector switch (5).
Clockwise rotation – set the direction selector switch (5) to the extreme left position (g. B).
Counter-clockwise rotation – set the direction selector switch (5) to the extreme right position.
* The possibility is reserved that in certain cases position of the direction selector switch relating to rotation direction of
spindle may be dierent than specied. Please refer to graphic signs placed on the switch or tool body.
Do not change direction of rotation when the spindle of the rotary hammer drill is rotating. Check
if the position of the selector switch is correct before starting the tool. Do not use left direction of
rotation when impact function is on.
VOLTAGE INDICATOR LAMP
When the rotary hammer drill is connected to power supply socket, the voltage indicator lamp lights up.
DRILLING HOLES
● When drilling a hole with large diameter, it is recommended to drill smaller hole and then ream it to
desired diameter. It prevents overloading the rotary hammer drill.
When drilling deep holes drill gradually to smaller depths, then slide the drill out of the hole to remove ●
chips and dust.
If a drill jam occurs during drilling, the overload clutch will activate. Turn o the rotary hammer drill im- ●
mediately to prevent its damage. Remove jammed drill from the hole.
Keep the rotary hammer drill in the axis of the hole. Keeping the drill perpendicular to the surface of the ●
processed material ensures the most eective operation. If a drill is not kept perpendicular to the surface
during operation, it may get jammed or broken in the hole, and even injure the user.
Long lasting drilling at low rotational speed of the spindle may cause motor overheating. Provide
periodic breaks during operation or let the tool operate at maximum speed with no load for appro-
ximately 3 minutes. Do not cover holes for motor ventilation in the rotary hammer drill body.
DRILLING WITHOUT IMPACT
Materials like steel, wood and plastics can be drilled with rotary hammer drill with the use of three jaw drill
chuck with intermediate adapter. Mount together three jaw drill chuck and intermediate adapter and then
place it in the rotary hammer drill chuck (proceed like with SDS Plus drills) (g. D).
Do not use three jaw drill chuck when the rotary hammer drill is set to impact drilling. This drill chuck
is designed for regular drilling only (in wood or steel). Use drills of high speed steel or carbon steels
(only for wood and wood-like materials).
IMPACT DRILLING
● Set operation mode switch (4) in position for impact drilling.
Insert appropriate SDS Plus drill into the chuck ( ● 1).
To get the best results use high quality drills with solid carbide inserts. ●
