Operation Manual

4
EN
24.4 SETTING THE CUTTING ANGLE (FIG.21)
(right and left cutters)
- Loosen the knob at the back M23 and turn the arm towards the
right. Position the reference mark by the angle desired.
- Tighten knob M23 again.
24.5 SHARPENING ANGLES FOR CHAINS WITH “DOWN ANGLE”
- Find the setting angles as just illustrated.
- Set another sharpening position: the down angle. To nd out which chains require
this setting, consult column E in the chain chart.
Down Angle
RH
CUTTER
24.6 SETTING THE DOWN ANGLE (FIG.22)
- Loosen knob M20.
- Move the vise towards the operator until the reference mark
matches the relevant value on the scale (see chain table).
24.7 SETTING THE TOP SHARPENING ANGLE (FIG.23)
- Turn the vise clockwise.
- Position the reference mark of the vise by the desired angle.
- Tighten knob M20 again.
Down Angle
LH
CUTTER
24.8 SETTING THE DOWN ANGLE (FIG.24)
- Loosen knob M20.
- Move the vise towards the opposite side of the operator until
the reference mark matches the relevant value on the scale
(see chain table).
24.9 SETTING THE TOP SHARPENING ANGLE (FIG.25)
- Turn the vise counter clockwise.
- Position the reference mark of the vise by the angle desired.
- Tighten knob M20 again.
Down Angle
24.10 SETTING THE CUTTING ANGLE (FIG.21)
(right and left cutters)
- Loosen the handle at the back M23 and turn the arm towards
the right. Position the reference mark on the angle desired.
- Tighten knob M23 again.
24.11 SETTING THE CHAIN BLOCKING UNIT (FIG.26)
- Find the gauge of the drive link (GAUGE column on chain table)
- Turn selector S1 so that the reference mark matches the relevant gauge of the
drive link with reference S2 on the vise
- All the gauges of chains presently commercialized are indicated on selector S1
- Put the chain in the vise.
- Take the cutter up against the chain blocking device A29.
- Turn the knob P29 to position the blocking unit A29 correctly compared to the cutter.
24.12 POSITIONING THE CUTTER
- FOREWORD When you lower the arm, the chain blocking system is hydraulically
operated. In the following adjustment phases, raise the arm whenever you work
on the chain positioning knob.
- Take the grinding wheel onto the cutter to be sharpened, pulling the arm downwards.
The chain will be blocked.
- Raise the arm so that the chain runs freely.
- Turn the knob P30 to move the chain so that the cutter cutting edge skims the
grinding wheel (g.27).
- At this stage, raise the arm and screw the knob P30 to move the cutter to be
sharpened further forwards.
This forward movement corresponds to the quantity of material to be ground
from the cutter.
Blunter the cutters, greater must be this forward movement. Vice versa, for cutters
that are not too blunt, simply grind just a slight amount of material.
- Turn knob P31 to adjust the cutter sharpening depth. The grinding wheel should
skim the bottom of the cutter vertically (g.28).
25. SHARPENING WARNINGS
- Wear personal protection equipment when sharpening.
- All adjustments must be made with the motor switched off and the grinding
wheel completely stopped.
- In the case of accidental impact or collision of the wheel during the shar-
pening process, follow the instructions given in the “GRINDING WHEEL
WARNINGS” section.
- Clean the chain before sharpening it.
- To avoid overloading the motor excessively and to avoid damaging the chain cut-
ters , grind minimum quantities of material and do not stop along the same cutter
as this could burn the cutting edge.
- Sharpen all the cutters on the same side and then adjust the vise as explained in
the previous sections, then sharpen the cutters on the opposite side.
- Do not use cooling liquids during the sharpening process.
26. SHARPENING THE CHAIN
- The vise closes automatically during this procedure and the chain is blocked.
- Turn the appliance on using the switch, press button I33 to release the arm and
sharpen the cutter by lowering the arm-motor unit (g.29).
- Once you have sharpened the chain, raise the arm.
- Run the chain forward to position the next cutter to be sharpened, making sure the
cutter rests on the chain stop.
- Lower the arm again to start sharpening.
28. GRINDING WHEEL DRESSING FOR SHARPENING THE DEPTH
GAUGE
- Fit the 8-mm thick grinding wheel (g.30), following the instructions given in points
13-17-18-19.
- Turn the vise so that the reference mark is on position 0 (g.31).
- Turn the arm to take the reference mark to 55°/60° (g.31).
- Position the dressing brick on the jaws and against the chain blocking unit (g.31).
Hold the dressing brick rmly with one hand (being careful not to touch the
grinding wheel).
- Prole the grinding wheel by activating the appliance and grind the grinding wheel
until you obtain a prole like the one illustrated in g.31.
- Switch the appliance off once you have nished.
29. SHARPENING THE DEPTH GAUGE
- Remove the dressing brick and put the chain in the vise.
- Center the cutter compared to the grinding wheel by turning the knobs (P29 and
P30).
- Keeping the arm tilted, adjust the grinding depth on the gauge by turning knob P31
(g.32).
- Sharpen the gauge following the instructions given in the “SHARPENING” section.
For this type of sharpening procedure, there is no difference between the right and
left cutters, therefore sharpen all the gauges one after the other.
- Check if the gauge depth is correct, using the template with the shape related to
the type of chain used (g.33). Please also consult the chain table, column F.
30. STOPPING AND SHUTTING DOWN
30.1 STOPPING
Turn the appliance off by turning the switch to position “0” and unplug the power
cable from the mains.
30.2 SHUTTING DOWN
Once you have nished using the appliance, disconnect it and clean it thoroughly.
Store it in a dry and safe place, protected against dust and damp.
30.3 ROUTINE MAINTENANCE
Follow the instructions given in the “STOPPING” section before you start to
work on the appliance.
Maintenance interval Job
When the grinding wheel
reaches a minimum diameter
of approximately 105 mm
Replace the grinding wheel.
40 hours
Clean the lamp carefully using a rag or a cleaning
brush.
Do not use compressed air.
Clean the grinder carefully using a rag or a clean-
ing brush.
Clean the electric motor and the sliding guides with
caution.
Do not use compressed air.
40 hours
Make sure all the screws of the hydraulic circuit
are tight.
Top-up with oil
When necessary.
The grinder is supplied with the hydraulic vise com-
pletely operational and with the piston already lled
with AGIP OSO 46 (ISO L-HM-VG46/DIN-31524) oil.
On a periodic basis you must top-up the oil in the
hydraulic circuit.
Proceed as follows (g.34-35-36):
a) raise the arm right up.
b) unscrew the screw (1) on the tting secured
directly on the piston
c) keeping the arm right up, put enough hydraulic
oil in the circuit for the grinder to work efciently
(6cc).
You are recommended to use a syringe lled with
AGIP OSO46 (ISO L-HM-VG46/DIN-31524) oil;
d) screw the screw back on and the copper washer
without tightening;
e) lower the arm slowly to release air from the
circuit;
f) tighten the screw with the arm right down.