Linz electric SPW10 AC Manual De Instrucciones Para El Uso Y Mantenimiento página 11

ALTERNATORS
SPW 10
E1W10 150AC
E1W10 200AC
E1W11 220AC
7. DESCRIPTION OF ALTERNATOR/WELDER WORKING PRINCIPLES
On the front panel you can find the following components (figure 13/A, 13/B, 13/C, 13/D):
1. Selector of Alternator/Welder function
2. Selector of current range
3. Quick plug of maximum welding current
4. Quick plug of intermediate welding current
5. Quick plug of common welding current
Working as alternator
In this function the selector (1) must be on position "GENERATOR" and current selector (2) must indicate the maximum value.
This way it is possible to use the single phase sockets mounted on the panel.
Working as AC current welder
In this function the selector (1) is on position "WELDER". For electrodes having diameters equal or lower than 3.2mm, the
welding cables must be connected to plugs (4) and (5).
With current range selector (2) it is possible to set the most suitable value according to the used electrode.
Important: every time the machine is used as welder, selector (1) must be in position "WELDER" to avoid any damage caused
by voltage fluctuations on the sockets.
8. SAFETY INSTRUCTIONS FOR WELDING
- Avoid any direct contact with the welding circuit, the arc striking tension of the welding outlet can be dangerous in some
circumstances.
- Effect checkout and repairing operations of the system only when the generator is completely stopped.
- Accomplish equipotential connection of all metallic parts according to national safety rules, as well as for any eventual
connection to earth
- Do not use the machine in damp or wet places or in the rain.
- Do not use cables with worn insulation or loose connections.
- Do not weld on containers or pipes which have held flammable materials or gaseous or liquid combustibles.
- Remove from working area all flammable materials like wood, paper, rags, etc.
- Provide an adequate ventilation or facilities for removal of welding fumes near the arc.
- Always protect your eyes with fitting adiactinic glasses mounted on welding masks or helmets. Use proper gloves or
protecting clothes avoiding the exposure of your skin to the welding arc.
9. INSTALLATION
Site
The machine must be located in a place where openings for inlet and outlet of cooling air are not obstructed. Furthermore check
that conductive dusts, corrosive vapours, humidity, etc. will not enter into the machine.
Connection of the welding cables
Cable with "electrode holder" gun is connected to terminal (4) for electrodes having a diameter equal or smaller than 3.2mm,
L.A. L.O.A.
-- 6203-2Z-C3
6205-2Z-C3 6204-2Z-C3
6205-2Z-C3 6204-2Z-C3
6207-2Z-C3 6305-2Z-C3
for bigger diameter the "electrode holder" gun is connected to terminal (3) of the machine.
The earth return cable must be connected to terminal (5) of the welder and earth terminal, in the opposite side of the cable,
must be connected to the work piece or a metallic work bench as closed as possible to the joint to be made.
Connected cables must be turned fully into the quick plugs to ensure a good electrical contact (loose connections will cause
overheating with consequent rapid deteriorations of the same). Avoid using welding cables of length over 10m.
10. WELDING
This welder is designed to weld rutile and acid electrodes and all other kind of electrodes suitable for fusion with alternating
current.
Welding current must be regulated according to electrode diameter and type of joint to be carried out.
As indication you can fi nd here below a table with currents and electrode diameters.
The user must consider that in case of same electrode diameter, higher current values must be used for fl at welding and lower
values for vertical and overhead welds.
The quality of the weld depends not only by the used current intensity, but also by electrode type and diameter, arc length,
speed and position of the execution and state of the electrodes which should be preserved from damp in theirs packing.
Parameter (figure 10)
FLAT
α 20°
g (mm) 2÷3
s (mm) 2÷3
As indication you can find here below a table with currents and electrode diameters:
Electrode diameter (mm)
1.6
2
2.5
3.2
4
5
Procedures
Holding the mask in front of the face, strike the electrode tip on the work piece as if you were striking a match.
Do not hit the electrode on the work piece because you could damage the electrode covering and make strike-up difficult.
As soon as arc is ignited, maintain a distance from the work piece equal to the diameter of the electrode; keep an angle of
20° - 30° as it advances.
For problems relevant to welding current see figure 11.
A) Advancement too slow;
B) Arc too short;
C) Current too low;
D) Advancement too fast;
- 11 -
Position
Vertical Overhead
30° 40°
3÷4 2÷3
2÷3 2÷3
Welding current (A)
min max
25 ÷ 50
40 ÷ 80
60 ÷ 110
80 ÷ 160
120 ÷ 200
150 ÷ 250