Imer Group COMBI 230 VA Manual De Uso & Mantenimiento página 12

9. ELECTRICAL CONNECTION
- Ensure that voltage corresponds to machine dataplate spe-
cifi cations.
The power supply line must be equipped with current overload protec-
tion (e.g. thermal cutout) and protection against indirect contact (e.g.
residual current circuit breaker).
Connect the machine to an effi cient earthing system.
The size of the power cable wires must be based on operating current
and length of the power line to prevent excessive voltage drops (table
4).
Table 4
Model Type of motor
230 V
7.8 A
Combi 250 VA
110 V
15.4 A
Connect the saw plug to the mains and tighten the mechanical retainer
ring with IP67 protection rating.
The saw is now ready for operation.
10. SAW START-UP
Connect the mains power cable to the plug on the electrical panel.
RESIDUAL CURRENT CIRCUIT PROTECTION
(KIT 230V-P/N.1169245 - KIT 110V-P/N.1169249)
It is compulsory to power the sawing machine using a differential switch
(230 V; current intensity 30 mA; max. cut-in time 20 μsec).
KIT code 1169245 can be supplied (fi g.5) to be connected on the supply
cable.
When the KIT has been installed, press the green ON button to be able
to start the sawing machine. An orange led will light up (differential pro-
tection on).
RESIDUAL CURRENT CIRCUIT BREAKER TEST
Press the black key TEST on the RCCB; the switch disconnects and the
orange led turns off.
After performing the TEST, press the ON key again to activate the
RCCB.
- Carry out the RCCB TEST before each machine start-up.
Then start the saw by means of the switch on the handle (ref.M, fi g.2),
comprising two buttons: green for start, red for stop.
The switch is fi tted with low voltage protection; in the event of accidental
power failure, press the green button again to resume operation.
In the event of an emergency, press the red pushbutton to shut down the
machine and disconnect the plug from the power mains.
The RCCB is deactivated each time the power supply is disconnected.
THERMAL CUTOUT PROTECTION
- The electric motor is protected against overload by a ther-
mal cutout; in the event of overheating this device shuts down the
motor.
Cool the motor and restart by means of the RCCB switch and the
main switch on the handle (ref.M, fi g.2).
The machine is protected against short circuits by a magnetic pro-
tection inside the RCCB.
11. MACHINE USE
11.1 Operation
The correct side for the operator is shown in fi g.4 ref.X.
Fill the water tank to the maximum level (approx. 36 litres).
Connect the machine to the power mains and start as described in pa-
ragraph 10.
Open the valve (ref.N, fi g.1) and ensure suffi cient fl ow of cooling water
to the diamond blade.
11.2 Cutting
Rest the material to be cut on the cutting table against the stopper. De-
fi ne the required inclination using the goniometer. To adjust the cutting
head height, loosen the handwheel (ref.O, fi g.3), position the head at
the required height, then fully tighten the handwheel. Make sure that
IMER INTERNATIONAL S.p.A.
COMBI 250 VA
Cable (mm²)
1.5 2.5 4.0
0 ÷ 22 23 ÷ 36 37 ÷ 58
0 ÷ 11 12 ÷ 18 19 ÷ 30
handwheels for sloped cutting (ref.G, fi g.2) are fi rmly tightened. Start the
sawing machine as described in paragraph 10. To proceed with cutting,
press the piece to be cut on the table with your hand and move the cutter
head gripping the handle and drawing it towards you. If the feed speed
is too fast in relation to the thickness and hardness of the material the
blade might stop turning. In this case, release the disk as quickly as
possible moving the cutter head away from you until the disk recovers
its nominal rotation speed. Resume cutting, adjusting the feed speed
according to the characteristics of the material.
11.3 Angled cuts
Loosen the handwheels (ref.G, fi g.2), set the cutting head at the requi-
red angle, retighten the handwheels, and proceed as described in the
point above.
- Ensure that the tank is kept full during all work phases and in
the event of prolonged work intervals replace water regularly and
remove all processing residue.
12. MAINTENANCE
12.1 Premise
Routine maintenance operations can also be performed by non-speciali-
sed personnel provided that all safety standards specifi ed in the relative
sections of this manual are observed at all times.
12.2 Machine cleaning
The machine should be cleaned exclusively when it is stationary.
- All power switches must be set to "0" and plugs must be
disconnected from the mains.
1. Never use compressed air; this could cause infi ltration of dust or re-
sidue in enclosed parts.
2. Ensure that the cooling water nozzles are not obstructed.
3. Above all the cooling water in the tank must be changed every day.
4. Do not use detergents or lubricants.
12.3 Cleaning the tank
Clean the tank in the event of build-up of sediment on the base, or at le-
ast once a day. Failure to clean the tank could impair operation of the im-
mersion pump used for circulation of the diamond blade cooling water.
To clean the tank, disassemble from the machine, lock the head, hold it
by the arms and rinse with a direct water jet (this is to avoid direct con-
tact of the water with electrical parts), the proceed with manual cleaning
using cloths or brushes.
Take care not to damage cables when replacing the machine on the tank
Take care not to damage the pump when placing the machine on the
surface
12.4 Cleaning the cooling water supply circuit
At regular intervals (or when the fl ow rate of the blade cooling water is
reduced) clean the cooling water supply circuit. To do this, disassemble
the delivery nozzle (ref.P, fi g.1) located inside the blade guard and clean
in water.
Periodically clean the cooling water delivery line between the pump and
valve and blade guard using water.
12.5 Blade replacement
The diamond blade is made of material that may be damaged when
subject to high temperatures, and therefore must be cooled during the
work phases.
To replace the blade, proceed as follows:
1. Block axial movement of the cutting head by means of the handwhe-
els (ref.L, fi g.1).
2. Disassemble the front guard (ref.P, fi g.1).
3. Loosen the locknut by rotating clockwise (left thread), using a 19 mm
wrench.
4. Move the cutting head forward slightly and incline to remove the blade
from its seat.
5. Ensure that there are no foreign objects between the fi xing fl ange and
diamond blade. During disassembly, avoid use of tools that could dent
or deform the fl ange.
6. Insert the new blade proceeding in reverse order of the operation
described at point 4. Take special care to ensure correct direction of
rotation of the diamond blade.
7. Tighten the blade locknut fully down by rotating anticlockwise (left
thread), to a torque of 40 Nm.
- Always disconnect the power plug before changing the disk.
12
GB