Prior To Welding; Maintenance; The Pointing Out Of Any Difficulties And Their Elimination; And Disassembly - CEA RAINBOW 180 Manual De Instrucciones

TABLE 3

WELDING Ø ELECTRODE
THICKNESS (mm)
1,5 ÷ 3
3 ÷ 5
5 ÷ 12
>= 12
TABLE 4
Ø ELECTRODE (mm) CURRENT (A)
1,6
2
2,5
3,25
4 140 ÷ 190
5 190 ÷ 240
6 220 ÷ 330
shown in table 4 is:
• High for plane, frontal plane and vertical
upwards welding
• Medium for overhead welding
• Low for vertical downwards welding and for
joining small pre-heated pieces
A fairly approximate indication of the average
current to use in the welding of electrodes for
ordinary steel is given by the following formula:
I = 50 x (Øe – 1)
where:
I = intensity of the welding current
Øe = electrode diameter
Example:
for electrode diameter 4 mm
I = 50 x (4 –1) = 50 x 3 = 150A

Prior to welding

IMPORTANT: before switching on the welder,
check once again that the voltage and
frequency of the power network correspond
to the rating plate.
1) Adjust the welding current using the panel
potentiometer (pos. 4 fig. A).
2) Adjust the PROCESS switch (pos. 6 fig. A)
to the most suitable position according to
the type of welding to be carried out.
3) Turn on the welder by selecting pos. 1 on
the supply switch (pos. 1 fig. A)
4) The green signal light (pos. 5 fig. A) shows
that the welder is switched on and ready
to be operated.

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 equipment. 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.
THE 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 indi-
( m m )
viduate worn cables or loose connections
2
that are the cause of overheating.
2,5
3,25
4
30 ÷ 60
40 ÷ 75
60 ÷ 110 The supply line is attributed with the cause of
the most common difficulties. In the case of
95 ÷ 140
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
Fig. C
The pointing out of
any difficulties and
their elimination
9
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.
Procedure for welder
assembly and
disassembly
Proceed as follows:
• 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.