Use an open-ended spanner (SW 36) to hold the drive shaft (8) and release and unscrew
(right-hand thread) the drill bit using an open-ended spanner (SW 24 for G 1/2" bits; SW 41
for 1.1/4" UNC bits).
Note: In the case of drill bits with a 1.1/4" UNC screw thread it is recommended to place a cop-
per ring (No. FF35190) between the drill motor and the drill bit. It is then easier to sepa-rate the
drill bits from the motor after drilling and any unevenness between the drill bit fit-ting and the
drive shaft is compensated.
Wet drilling (B-3)
Wet drilling is only permitted with a faultless "PRCD". Always carry out work using a water
extraction device when wet drilling overhead. Protect the prime mover from splash water!
Water connection: Water connection (6) to a submersible pressurized water tank or con-
necting a water line directly over a Gardena water hose (7) using a two way adapter. There
must at least be sufficient water pressure (max. 4 bar!) to move the arising drilling mud
from the borehole.
Operation in the drill rig: Use the adjusting screws to fix both arms of the water extraction
ring to the base plate. Cut a hole into the rubber sheet somewhat larger than the diameter
of the drill bit. Connect the water extraction ring to the water extractor.
Concerning this, please read the operating manual for the pressurized water tank or the water
extractor appliance!
Optional: Dry drilling (B-4)
Screw the suction rotor onto the drive shaft (8).
Attach the hose adapter and suction hose.
Connect the vacuum cleaner to the mains supply.
For this please read the vacuum cleaner instruction manual!
4.3
Operating
Please read and be sure to understand the drill rig instruction manual for operation in the
drill rig!
Overload protection
The green control lamp illuminates during normal operation. The red control lamp illu-minates if
excessive pressure is applied to the drill bit. Reduce the contact pressure; the green control
lamp illuminates again.
The electronic system shuts the equipment down in the case of overloading for a longer period
of time. Switch the equipment off and then on again in order to continue working. In the event of
jerky overloading (e.g. jamming of the drill bit) the friction coupling inter-rupts the force flow.
Setting the speed
Set the speed according to the diameter and the type of the material, according to the la-
bel.
Important information about shifting gears:
Only shift gears when the machine is at a standstill! Shifting gears while the machine is
running can damage the machine!
-
The shift lever must engage cleanly in the respective gear, otherwise it may disengage
again on its own and cause damage.
-
Do not use excessive force when shifting gears, as this may cause the shift lever to over-
rotate.
-
If the gear does not engage when attempting to shift, turn the shaft or the machine slightly
back and forth so that the teeth can engage and the shift can be completed.
18
ENGLISH