CEA MATRIX 420 E, Руководство оператора, Страница: 6 / 23

6
GENERATOR
As these systems are completely static, proceed as follow:
• Periodic removal of accumulated dirt and dust from the inside
of the generator, using compressed air. Do not aim the air
jet directly onto the electrical components, in order to avoid
damaging them.
• Make periodical inspections in order to individuate worn ca-
bles or loose connections that are the cause of overheating.
Optional
•
CD 6
manual remote control.
When this accessory is activated the welding current can only
be remote controlled (value adjustable from 5 to 420A), and
this value will be shown on the welding machine’s display.
The digital control unit of the generator is fitted with a control
recognition device which allows it to identify which device is
connected and take action accordingly.
The remote control can be connected whether the welding
machine is on or off.
NOTE: The MX control panel has a STAND-BY function that,
when the remote control is on, switches off the inverter when
the minimum welding current value is reached (to reinstate
normal, correct functioning of the machine, increase the weld-
ing current value by rotating the remote control knob).
• External mechanical polarity inverter.
The pointing out of any difficulties
and their elimination
The supply line is attributed with the cause of the most com-
mon difficulties. In the case of breakdown, proceed as follows:
1) Check the value of the supply voltage
2) Check that the power cable is perfectly connected to the
plug and the supply switch
3) Check that the power fuses are not burned out or loose
4) Check whether the following are defective:
• The switch that supplies the machine.
• The plug socket in the wall.
• The generator switch.
NOTE: Given the required technical skills necessary for the re-
pair of the generator, in case of breakdown we advise you to
contact skilled personnel or our technical service department.
Procedure for cover assembly
and disassembly
Proceed as follows (Fig. E):
1) Unscrew the two screws fastening the handle.
2) Take off handle pulling it backwards.
3) Take off covering lid and unscrew the 3 screws fastening
the top.
4) Use both hands to push the top towards the front part free-
ing the back part.
5) Remove top by lifting with both hands.
Proceed vice versa for assembly.
Digital interface PCB replacement
• Unscrew the 4 screws fastening the front rack panel.
• Remove control dials.
• Extract wiring connectors from the digital interface PCB.
• Unscrew small supporting columns.
• Remove the digital interface PCB by lifting it out of its sup-
ports.
• Proceed vice versa to assemble the new digital interface
PCB.
1
2
3
4
5
FIG. E