Maintenance; The Pointing Out Of Any Difficulties And Their Elimination; Procedure For Welder Assembly And Disassembly; Deactivating The Vrd Device - CEA RAINBOW 183 cell vrd Manual Del Usuario

FIG. E

Maintenance

WARNING: Before carrying out any inspection of the inside of the
generator, disconnect the system from the supply.
SPARE PARTS
Original spare parts have been specially designed for our equip-
ment. The use of non-original spare parts may cause variations in
performance or reduce the foreseen level of safety. We decline all
responsibility for the use of non-original spare parts.
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 dam-
aging them.
• Make periodical inspections in order to individuate worn cables
or loose connections that are the cause of overheating.
The pointing out of any difficulties
and their elimination
The supply line is attributed with the cause of the most common
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 repair
of the generator, in case of breakdown we advise you to contact
skilled personnel or our technical service department.
VRD
"OFF"
FIG. F
Procedure for welder assembly
and disassembly
Proceed as follows (Fig. E):
• Unscrew the 4 screws holding the front and back panels.
• Unscrew the 2 screws holding the handle.
• Proceed the other way round to re-assemble the welder.

Deactivating the VRD device

To activate the VRD device, which must be done when the weld-
ing machine is switched off:
1) Use a screwdriver to unscrew the 2 upper fixing screws and
remove the plastic handle (see Fig E).
2) Insert the VRD JUMPER in the INVERTER CONTROL
BOARD (Fig F).
3) Use a screwdriver and the 2 screws to fix the handle on the
welding machine.
4) Start the welding machine by selecting position 1 on the line
switch (Pos. 1, Fig. A). When the VRD LED on the welding
machine is RED this means that the VRD device is not active
and the voltage on the welding machine's output terminals is
greater than 35 V.
12
JUMPER "VRD"
VRD
"ON"