Operation; Starting And Stopping; Forward/Reverse; Selecting The Required Function - GMC CRHD950 Manuel D'instructions

Operation

Starting and stopping

1. Plug the cordset into the
mains socket.
2. Depress the on/off Trigger
Switch (2) to start the drill and
release the trigger when you
wish to stop (Fig. H).

Forward/reverse

1. The Forward/Reverse Lever Switch (1) is located
immediately above the Trigger Switch (2).
2. It determines the direction of rotation of the tool and
serves as a lock off control.
3. To select forward rotation, release the trigger switch and
push the forward/reverse lever switch to the left side of the
tool (Fig. I).
I
4. To select reverse, push the Forward/Reverse Lever
Switch (1) to the right side of the tool (Fig. J).
WARNING. When changing the position of the switch (3) be
sure the trigger is released and the motor is stationary. Any
attempt to reverse the direction of rotation whilst the drill is
turning is likely to permanently damage the switch.
Note. The first time the tool is run after changing the
direction of rotation, you may hear a click on start up.
This is normal and does not indicate a problem.
Note. It is not uncommon for rotary hammer drills not to
function in hammer mode when used for the first time.
To release the hammer function, place a bit into the
SDS-Plus chuck and with medium force tap the end of the
bit down on to a solid service with the machine on and the
H
trigger pulled. Do this several times until the hammer
action activates.

Selecting the required function

1. To select the required mode of operation, press the
Selector Button (13) and set 4-Function Selector (14) to
the appropriate position.
2. Release the Selector Button (13).
It is possible to use the pneumatic hammer drill in four
different modes of operation:
1. Stop Rotation with fixed chuck
Pneumatic hammer action with
the bit fixed from rotating is
ideally suited for light
to medium demolition work
or chiseling for example
lifting tiles (Fig. K).
J
Note. The 13mm keyed chuck
adaptor is not suitable for use
in this mode.
2. Stop Rotation with free
chuck
Pneumatic hammer action with
non-powered bit rotation allows
the operator to freely rotate the
tool to the most suitable angle
for the task (Fig. L).
Note. The 13mm keyed chuck
adaptor is not suitable for
use in this mode.
9
GB
K
L