HF 231
11
7.OPERATION
7.1.CONTROL HANDLE
The HF 160 is operated with a control handle,
which has 3 positions:
1.FEED FORWARD F
The feeder reel spins inwards and wood can be fed
into the chipper. The handle locks in this positio.
2. STOP
The feeder reel ceases to spin and the feeding
stops. The handle locks in this position.
3.REVERSE R
The feeder reel spins outward and wood comes out
of the feeder.
Feed
Stop
Reverse
Fig 6.Control handle.
7.2.SAFETY HANDLE
The HF 160 has been equipped with a safety
handle, which operates as a safety appliance and
as the emergency stop control. The safety handle
has 4 positions:
1. STOP
The feeder reel ceases to spin and the feeding
stops.
2.NEUTRAL N
The chipper controls are done through the control
handle.
3.STOP
The feeder reel ceases to spin and the feeding
stops.
4.REVERSE R
The feeder reel spins outward.
Stop
Neutral
Stop
Reverse
Fig 7.Safety handle.
7.3.OPERATION
1. Ensure that the feed funnel is empty. Turn on the
tractor hydraulics or connect an external power
source (OEM).
2. Before feeding the material, ensure that nails, stones
etc will not get into the chipper amongst the material
to be chipped.
3. If necessary, set the revolving speed of the feeder
reel to correspond to the revolving speed of a
grinding wheel.
The speed is suitable when the wood does not push
against the grinding wheel or the feeder reel spikes
do not slow down the feeding of wood. See
paragraph7.4.
4. Set the control handle in the FEED Fposition. The
feeder reel will begin to roll when the air has left the
hydraulic circuit.
5. Feed the wood into the feed chute. Let go of the
wood immediately after the feeder reel begins to pull
it
Do not work in front of the feeder if not
necessary!
Feeder reels can wrench the wood up or
to the right.
DANGER!
Make sure that your clothes or hair do not
get tangled in the revolving parts of the
appliance when it is turned on.
Feeding rope or barbed wire into the chip-
per is dangerous, because the rope can
get caught on the operator and pull him/
her with it to the feed funnel.
Never push limbs into the feed chute
when the appliance is turned on.
VAARA!
DWhen chipping a large tree with a low capacity
tractor, the tractor’s revolutions will endeavour to fall
especially towards the end of a long tree. Stop the
feeding occasionally by switching the control handle
to STOP ---position. When the revolutions have
increased sufficiently, continue feeding by switching
the control handle to FEED F-position.
DIf you need to remove the tree from the feed funnel
in the middle of chipping, switch the control handle
to REVERSE R-position and hold it there until the
feeder reel releases the tree.
Oilwillheatwhentravellingthroughthe
hydraulic pump, hydraulic motor and the
valves. The heating can be considerable if
the tractor has a small hydraulic tank.
Check the oil temperatures twice an hour
to prevent the oil from overheating. If the
oil overheats, let it cool down by stopping
the chipping.
NOTE!
Observe the revolutions of the feeder re-
els. If the feeder reel stops, switch the
control handle to REVERSE R position.
If the feeder reels are stopped when the
control handle is in FEED FORWARD F
position, the oil flows through the pres-
sure limit valves and heats very quickly.
NOTE!
7.4.SETTING THE FEEDER SPEED
Do not set the feeder speed when the
feeder reels are revolving. This damage
the valve. Stop the feeder reels for the
duration of the setting and try the speed
afterwards.
NOTE!
DUsing the flow control valve, set the revolution
speed of the feeder reel to correspond with the
cutting speed of the blades. By turning the knob
anticlockwise, the revolution speed of the feeder reel
grows, correspondingly by turning it clockwise, the
revolution speed will diminish. See Fig 8.