Generator Maintenance; Torch Maintenance - Cebora PC 6060/T Manual De Instrucciones

6 MAINTENANCE
Always cut off the power supply to the machine befo-
re any operation, which must always be carried out by
qualified personnel.

6.1 GENERATOR MAINTENANCE

In the case of maintenance inside the machine, make
sure that the switch C is in position "O" and that the
power cord is disconnected from the mains.
Also make sure that there is no voltage at the ends of the
IGBT group capacitors.
Even though the machine is equipped with an automatic
condensation drainage device that is tripped each time
the air supply is closed, it is good practice to periodically
make sure that there is no condensation accumulated in
the water trap I (fig.1). It is also necessary to periodically
clean the interior of the machine from the accumulated
metal dust, using compressed air.
6.1.1 Troubleshooting (Art. 356 only)
The LED S lights when the following conditions occur:
LED S CONDITION
Steadily lit Upon equipment start-up
Steadily lit Button pressed during
equipment start-up
Steadily lit Missing safety protection R
Steadily lit Incorrect IGBT drive voltage
Steadily lit Reed contact closed during
equipment start-up
Steadily lit Supply voltage too low
Steadily lit Phase missing in the power
supply line
Flashing Short-circuit between elec-
lit trode and nozzle during
equipment start-up or during
cutting

6.2 TORCH MAINTENANCE

In reference to Fig. 7-8, the parts subject to wear are the
electrode A, the swirl ring B and the nozzle C; these must
be replaced after first unscrewing the gas nozzle holder D.
The electrode A must be replaced when it has a crater in
the center approximately 1.5 mm deep.
CAUTION: do not use sudden force to unscrew the elec-
trode; work gradually to release the thread. The new elec-
trode must be screwed into the seat and fastened in place
without tightening fully.
The nozzle C must be replaced when the central hole is
damaged or wider than that of a new part. Delays in repla-
cing the electrode or nozzle will cause the parts to
overheat, and jeopardize the life-span of the swirl ring B.
Make sure that the gas nozzle holder D is firmly tightened
after replacement.
12
SOLUTION
Wait 5 sec
Release the button
Mount the protection
Contact technical service
Contact technical service
Check the supply voltage
Check the power supply line.
Note: in some situations a
missing phase does not
cause the LED S to light,
therefore you should always
check the power supply line
in the case of malfunction
Replace the electrode and
gas nozzle, and diffuser if
necessary
A
B
C
D
A
B
C
D
CAUTION: Screw the gas nozzle holder D onto the torch
body only with the electrode A, swirl ring B and nozzle C
mounted.
If any of these parts are missing, this will interfere with
smooth operation of the machine and, especially, jeo-
pardize operator safety.
6.3 PRECAUTIONS AFTER REPAIRS.
After making repairs, take care to organize the wiring so that
there is secure insulation between the primary and secon-
dary sides of the machine. Do not allow the wires to come
into contact with moving parts or those that heat up during
operation. Reassemble all clamps as they were on the origi-
nal machine, to prevent a connection from occurring
between the primary and secondary circuits should a wire
accidentally break or be disconnected.
Also mount the screws with geared washers as on the ori-
ginal machine.
fig. 7
fig. 8