Ferm 49
OPERATION
Hammer drilling requires low operator pres-
sure.
An excess of pressure can cause the motor to be
unnecessarily overloaded.
MANUAL SIDE GRIP
The manual side grip can be rotated to either side of the
machine to ensure safe and comfortable operation for
both left and right-handed operators.
1. Loosen the grip by turning anti-clockwise.
2. Rotate the grip to the desired position.
3. Tighten the grip firmly.
CHANGING AND REMOVING DRILL BITS
Fig.B
Before changing drill bits check that the
mains plug has been removed from the soc-
ket.
Check drill bits regularly
Blunt drill bits should be re-sharpened or
replaced
1. Lightly lubricate the shaft of the drill bit before inser-
ting into the machine.
2. Place the shaft of the drill bit into the opening of the
drill chuck and twist until latched.
3. To release and remove the drill bit pull back the collar
of drill chuck .
ADJUSTING DEPTH STOP
1. Loosen the manual side grip.
2. Place the straight part of the depth stop through the
hole in the grip.
3. Adjust the stop to the desired bit depth.
4. Tighten the grip firmly.
INSTALLING DUST CATCHER
Fig.C
The dust catcher prevents large amounts of drilling dust
entering the machine when drilling into ceilings.
1. Remove the drill bit.
2. Slide the dust catcher over the shaft of the drill bit.
3. Place the drill bit with catcher in the drill chuck.
4. Always replace a damaged dust catcher immediately.
MODE SELECTOR SWITCH
Fig.D
The correct switch lever positions required for each dril-
ling mode are indicated in the diagram at page 2.
D1 = hammerdrilling .
D2 = drilling.
D3 = chiseling.
SWITCHING ON AND OFF
To start drill:depress ON/OFF switch.
To stop drill:release ON/OFF switch.
DRILL WITH DRILL CHUCK ADAPTER
Fig.E
When drilling steel,wood and plastic,it is advisable to use
the ring gear chuck and the drill chuck adapter.
TROUBLESHOOTING
Motor does not rotate upon switching on power
supply
-Power supply breakage
Inspect power supply
-Poor switch contact
Repair or replace ON/OFF switch
-Mains voltage too low
-Extension cord too long/ too thin
-Motor damaged
Repair your machine by an expert.
-Worn out brushes
Replace carbon brushes
Motor generates abnormal noise and rotates
slowly or not at all
-Motor overloaded due to excessive pressure or dril-
ling depth
Reduce pressure or drilling depth,decrease force
-Motor damaged
Repair your machine by an expert.
-Main power supply voltage too low
Adjust main power supply voltage
-Worn out brushes
Replace carbon brushes
Overheating of gearbox surface
Overloading or blunt drill bit
Reduce load or sharpen drill bit
Decreased voltage
Adjust main power supply voltage
Heavy sparking of the motor
Check if carbon brushes are not worn out.
4Ferm
