Maintenance - CEA MATRIX X220 AC/DC Operator's Manual

Part to be welded
The part to be welded must always be connected to ground in order to reduce electromagnetic emission.
Much attention must be afforded so that the ground connection of the part to be welded does not increase the risk of accident to the user
or the risk of damage to other electric equipment.
When it is necessary to connect the part to be welded to ground, you should make a direct connection between the part and the ground
shaft.
In those countries in which such a connection is not allowed, connect the part to be welded to ground using suitable capacitors, in com-
pliance with the national regulations.
Welding parameters
Table 4 shows the values of current to use with the respective electrodes for the welding of common steels and low-grade alloys. The-
se data have no absolute value and are indicative data only.
For a precise choice follow the instructions provided by the electrode manufacturer.
Ø ELECTRODE
6010
(mm)
6011
1,6 -
2 -
2,4 40-80
3,2 75-125
4 110-170
4,8 140-215
5,6 170-250
6,4 210-320
8 275-425
The current to be used depends on the welding positions and the type of joint, and it increases according to the thickness and dimen-
sions of the part.
The current intensity to be used for the different types of welding, within the field of regulation 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:
Where:
I = intensity of the welding current
Øe = electrode diameter
Example:
For electrode diameter 4 mm

Maintenance

ATTENTION: 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 per-
formance 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 damaging them.
• Make periodical inspections in order to individuate worn cables or loose connections that are the cause of overheating.
ELECTRODE TYPE - Current adjustment field (A)
6012 6013 6020
20-40 20-40 -
25-60 25-60 -
35-85 45-90 -
80-140 80-130 100-150
110-190 105-180 130-190
140-240 150-230 175-250
200-320 310-300 225-310
250-400 250-350 275-375
300-500 320-430 340-450
I = 50 × (4 - 1) = 50 × 3 = 150A
7015
6027 7014
7016
- -
- -
- 80-125 65-110
125-185 110-160 100-150
160-240 150-210 140-200
210-300 200-275 180-255
250-350 260-340 240-320
300-420 330-415 300-390
375-475 390-500 375-475
I = 50 × (Øe - 1)
11
7024
7018
7028
- - -
- - -
70-100 100-145
115-165 140-190
150-220 180-250
200-275 230-305
260-340 275-365
315-400 335-430
375-470 400-525
Table 4
WELDING
THICKNESS
(mm)
≤ 5
≤ 6,5
> 3,5
> 6,5
> 9,5
> 13