CHIEF MultiMig 521, Instruction Manual

6

key 

AV

, turn knob 

AI

 until the display 

AL

shows the 

abbreviation 

DEL

 and press the key again

AV

 for 3 more 

seconds.

A current/voltage parameter may be restored  outside 

saving  for both using or changing it. To restore it press 

for 3 seconds key 

AV

, display by menas of knob 

AI

 the 

number to be restored and show on display 

AL

, with 

knob

AN

the abbreviation 

rcL

; now just press for at least 

3 seconds key 

AV

.

LED AZ JOB.

Shows that you are inside the saving menu of the saved 

working points.

Selection key AY. 

Gas Test .

When this jey is pressed gas stars flowing; to stop it press 

the key again.

If the second press does not takes place the  gas output 

is interrupted after 30 seconds

Selection key AW.

Wire test.

Allows the wire feed with no current or voltage present. 

When  this  key  is  held  down,  during  the  first  5  seconds 

the wire advances at the speed of 1 meter per minute and 

then the speed increases up to 8 meters per minute.

When this key is released the motor stops immediately.

 5. SERVICE FUNCTIONS.

Press the key 

AE

, and hold it down for at least 3 seconds 

to enter the submenu. Turning the knob 

AI 

 you select the 

function, shown on the display 

AL

and turning the knob 

AN 

 you select the type of operation or the value, shown 

on the display 

AM

. To return to the normal display, press 

and release the key 

AE

 immediately.

1- TRG

.

Choice between 

2- 

or 

4- stages 

, 

3 levels, 

the selection 

2t 

and  

4t

 with the selection key 

AU

, without  entering the 

service functions. 

2t 

the machine begins welding when the welding torch 

trigger is pressed, and stops when released. 

4t

 to begin 

welding press and release the welding torch trigger; to 

interrupt, you must press and release it again. 

3L 

this 

procedure is active in the synergic processes. Specially 

well suited to weld aluminum.

3 currents are available that can be used in welding by 

means of the welding torch start button. The current and 

the slope values are set as follows:

SC 

starting current (Hot Start). With the possibility of 

adjusting from 1 to 200% of the welding current, a value 

adjusted using the knob  

AN

.

Slo 

slope. Possibility of adjusting from 1 to 10 seconds.

Defines the connection time between the first current  

SC 

with the welding current and the second  current with 

the 

third current 

CrC 

( crater filler current), a value set by 

means of  knob 

AN.

CrC - 

«Crater  filler»  current.  With  the  possibility  of 

adjusting from 1 to 200% of the welding current, a value 

adjusted using the knob  

AN.

Welding starts at the welding torch button pressure, the 

named pressure will be the starting pressure 

SC

.

This current is kept as long as the welding torch button 

is held down; when the welding torch trigger is released  

the first current connects to the welding current, set by 

means of   knob 

AI

, and is kept as long as the welding 

torch button is held down. When  the welding torch trigger 

is pressed again the welding current connects to the third 

current   

CrC 

. and is kept as long as the welding torch 

trigger is held down. When the welding torch trigger is 

released  welding stops.

2- SP (spot-welding).

Off/ON activates and disables the spot function.

The spot welding time  

tSP

 is set from  0.3 to 5 seconds.

The interval between two spots  

tIN

 is set from  0,3 to 5 

seconds.

This function is  è blocked when function 

3L

 is activated.

3- HSA (Automatic Hot Start).

This function is blocked when  function 

3L 

is  activated  

and works only with the synergic processes.

Once the function has been enabled using the

AN 

knob , 

the operator may adjust the level of the starting current 

SC 

(Hot Start), with the possibility of adjusting from 1 to 

200% of the welding current, a value adjusted using the 

knob

AN 

.

The  duration 

tHS

 (default 130%) of this current may also 

be adjusted from 0.1 to 10 seconds.) (default 0,5 sec.).

The switching time 

Slo

 between the 

SC 

current  and 

the welding current may also be adjusted from 0.1 to 10 

seconds.(default 0.5 seconds).

4- CrA (final crater filler).

This function may be selected by means of  key 

AI

 and is 

working during  welding 

2t

 or 

4t

 and  also in combination 

with function HSA, if so requested.

After activating function 

«On»

 by means of  knob 

AN

, 

rotate  knob 

AI

 to display the abbreviations:

Slo

 = Fitting time between the welding current and the 

crater filling time. Default 0.5 sec.

Range 0.1 – 10 seconds.

CrC

  =  crater  filling  time  expressed  as  a  percentage  of 

the welding wire speed. Default 60%. Range from 10  to 

200%.

TCr

 = duration of the filling  current time. Default 0.5 sec. 

Range 0.1 – 10 seconds.

5- PrF (Pre-gas).

The adjustment may range from 0 to 3 seconds.

6- Pof (post-gas). 

The adjustment may range from 0 to 30 seconds.

7- Acc (soft-start ). 

The adjustment may range from 0 to 100%. 

It is the wire speed, expressed as a percentage of the 

speed set for the welding, before the wire touches the 

workpiece.

This adjustment is important in order to always achieve 

good starts.

Manufacturer setting «Au»: automatic.  

The value can be changed using the knob AN

. If, once 

changed, you wish to return to the original settings,