Fix Parameters; Stick Welding - Helvi COMPACT 211 EASY Manuel D'instructions

• Pulse frequency
Unit of measure Hz
Setting range 0.5—200
Default setting 0.5
9 8
10
Fig.13

FIX PARAMETERS

• Pre-gas Time
Unit of measure S
Default setting 0.1
• Tempo di Slope UP (only in 4T)
Unit of measure S
Default setting 1
• Ratio of pulse time to base current time
Unit of measure %
Default setting 50
• Slope Down Time (only in 4T)
Unit of measure S
Default setting 3
• Post-gas Time
Unit of measure S
Default setting 10''
Note: Press key 10 when switching on the
unit to set the post gas time from 1'' to 10''.

STICK WELDING

General information
The electric arc may be described as a
source of bright light and strong heat;
in fact, the fl ow of electric current in the
gas atmosphere which surrounds the
electrode and the workpiece determines
the radiation of electromagnetic waves
that can be perceived as light and/or
heat depending on their wave length. At
an unperceivable level, the arc also pro-
duces ultra-violet and infra-red light; io-
nizing rays have never been noted. The
heat produced by the arc is used in the
welding process to melt and join metal
parts. The necessary electric current
is supplied by special equipment com-
monly called welding machine.
3 12
2 11
- Connect the earth cable to the negative
pole of the inverter and the earth clamp to the
workpiece.
- Connect the welding cable to the positive
pole of the Inverter.
- Select MMA Welding Mode using the
Welding Mode Selection Key (10) on the front
panel.
- Turn unit ON.
- Set Welding Current through the Welding
Parameters' Regulation Knob (2).
The welding current should be chosen following
the instruction given by the electrodes manufac-
turer on the electrode box, but the following in-
dications may be useful as general information:
ELECTRODE DIAMETER
1.5mm
2.0 mm
2.5 mm
3.25 mm
4.0 mm
5.0 mm
- Protect your face with a mask or a hel-
met. Touch, with the electrode fastened, in
the electrode holder, the work piece until the
arc will be struck.
Avoid hammering the workpiece with the
electrode since it may loose the coating
and increase the arc striking diffi culties.
- After striking the arc keep feeding the
electrode into the weld pool with an angle of
about 60° and moving left to right so that you
may control visually the welding. The length
of the arc can also be controlled by lifting or
lowering slightly the electrode. Also a varia-
tion of the welding angle may increase the
size of the weld pool improving the capacity
of surfacing of the slag.
- At the end of the weld let the slag cool off
before removing it, using the brush-hammer.
CAUTION:
Protect your eyes when hitting the slag
with the chip hammer to avoid damages.
CAUTION:
A bad start can be due to the dirty
workpiece, a bad connection between
earth cable and work piece, or the bad
fastening of the electrode in the electro-
de holder.
EN-10
WELDING CURRENT
30 A - 40 A
50 A -65 A
70 A -100 A
100 A - 140 A
140 A - 160 A
160 A - 200 A