Technical Data Information Guide; Protection Gases Guide; Welding Hints And Maintenance - Helvi Compact 355HF Manual De Uso

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13.0

TECHnICAL DATA InFORMATIOn GUIDE

1
2
3
5
4
6
8
14.0
METALLO
Mild steel
Aluminium
Stainless steel
Copper, Nickel and
Alloys
Contact the technical service of your gas supplier to know the percentages of the different
gases which are the most suitable to your application.
15.0

WELDInG HInTS AnD MAInTEnAnCE

Always weld clean, dry and well prepared material.
Hold gun at a 45° angle to the workpiece with nozzle about 5 mm from the surface.
Move the gun smoothly and steadily as you weld.
Avoid welding in very drafty areas. A weak pitted and porous weld will result due to air blowing
away the protective welding gas.
Keep wire and wire liner clean. Do not use rusty wire.
Sharp bends or kinks on the welding cable should be avoided.
Always try to avoid getting particles of metal inside the machine since they could cause short cir-
cuits.
If available, use compressed air to periodically clean the hose liner when changing wire spools
IMPORTANT: Disconnect from power source when carrying out this operation.
Using low pressure air (3/5 Bar=20-30 PSI), occasionally blow the dust from the inside of the wel-
der. This keeps the machine running cooler. Note: do not blow air over the printed circuit board
and electronic components.
The wire feed roller will eventually wear during normal use. With the correct tension the pressure
roller must feed the wire without slipping. If the pressure roller and the wire feed roller make con-
tact (when the wire is in place between them), the wire feed roller must be replaced.
Check all cables periodically. They must be in good condition and not cracked.
-ENGLISH-

PROTECTIOn GASES GUIDE

GAS
CO2
Argon + CO2
Argon + CO2 + Oxygen
Argon
Argon + Helium
Argon + CO2 + Oxygen
Argon + Oxygen
Argon
Argon + Helium
1 Serial Number of the unit
2 Power source model
13
3 Type of characteristic
4 Min. - Max rated No Load Voltage
12
5 Type of welding
11
6 Symbol for the main supply and no. of phases
7 Rated value of the supply voltage
10
8 Protection degree
9 Supply current
10 Welding supply and voltage
9
11 Power Factor
12 Control range (current / voltage)
7
13 Reference standard
FIG. 8
NOTE
Argon controls spatters
Oxygen improves arc stability
Arc stability, good fusion and minimum
spatter.
Higher heat input suitable for heavy
sections. Minimum porosity.
Arc stability.
Minimum spatter.
Suitable for light gauges because of low
flowability of the weld pool.
Higher heat input suitable for heavy
sections.
25

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