Welbach ALPHA 225 Manuel D'utilisation page 38

6. PULSE WIDTN
Time proportion of peak value current when pulse outputting, which controls
the welding line deep and realize entire position welding and sheet welding.
7. PULSE FREQ
Working frequency when pulse outputting.
8. AC FREQ
Output frequency of AC working.
9. CLEAN WIDTN
the time proportion of minus direction current within one AC welding cycle.
10. CLEAN SCOPE
the percentage of minus direction current scope adding when AC welding.
11. BASE AMP.
the maintaining arc current when pulse outputting.
12. CURRENT DOWN SLOPE
time slot for welding current decreasing.
13. FINAL AMP
the welding current before finishing welding.
14. GAS POST-FLOW
Gas extending time after welding is finished. It can protect the welding line.
15. Protection indicator Light:
The yellow indicator will not light when working well-balanced. However when
the welder is over-heat or lacks of water protection, the indicator will be light
and the welder will self-protection and stop working automatically
16. EASY/ STICK/ PULSE TIG/TIG/" button:
the indicator on position stands for current estate. EASY means automatic
welding and nothing can be adjusted except current; STICK means: MMA
welding; PULSE TIG means TIG welding with pulse function; TIG means the com-
mon TIG welding.
17. "AC/DC" selection button: selecting "AC/DC" functions, TIG welding divides
into AC welding and DC welding, the indicator on position stands for current
estate.
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18."SLOPE/STUD" selection button: Selecting "SLOPE/STUD" procedure
functions. TIG welding divides into "STUD" action (non-self lock) and "SLOPE"
action (self lock), both AC (PULSE TIG/TIG) and DC (PULSE TIG/TIG) can realize
"SLOPE/STUD" selection.
slope Indicator light: select self-lock function(slope),: Press the torch trigger
first time, The machine start welding , release the torch trigger, the machine keep
welding, press the torch trigger again, the cutter unit stop welding.
19."AIR COOLING/WATER COOLING" selection: According the torch
and current to choose "Air Cooling or water cooling" function. If the "water inlet"
marked on the back panel of the welding machine, that means "water cooling", The
same way with the "AIR COOLING" function choosing
20."SELECTION PAR. /FORCE AMP" (knob 1.) The illumination button
stands for the current estate you are choosing and you can change the estate by
turn that knob. You can choose any procedure function among "GAS PRE-FLOW/
GAS POST-FLOW, STARTING AMP./FINAL AMP. ,CURRENT UP SLOPE/CURRENT
DOWN SLOPE,TIG, AC/PULSE FREQUENCY, BASE AMP./PEAK AMP.,CLEAN
WIDTH/CLEAN SCOPE /PULSE WIDTH".
Also when it is MMA welding, the knob can adjust ARC force.
21. "ADJUSTMENT PAR. /DCR AMP. (Knob 2): After choosing the pro
cedure function (refer to item 20), the current estate are set, then you can turn
knob 2 to adjust its parameter. For example: GAS PRE-FLOW indicator on, adjust
"ADJUSTMENT PAR." Knob to set "GAS PRE-FLOW/ GAS POST-FLOW"
time (0~1S), When the "STARTING AMP." indicator on, adjust "ADJUSTMENT
PAR." Knob to set STARTING AMP. /FINAL AMP. current(10~180/250A), and
using the same way to adjust beforehand for the followings: "CURRENT
UP SLOPE/CURRENT DOWN SLOPE" time(0~25S), "TIG"(10~180/250A),
"BASE AMP./PEAK AMP." current (10~180/250A)/"PULSE WIDTH "(1~100%),
"AC"(20~100HZ)/"PULSE FREQ."(0.2~20HZ), "CLEAN WIDTH(-
40~+40%)"/"CLEAN SCOPE(-15~+30%)". Press this knob and turn the knob left
or right can realize speed adjustment. This welding machine can auto-save data
when it is power off, which could be used directly of next time. Also it can used
for adjusting welding current when the STICK is used.
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