Fault Finding - Stanley TOP MIG 1400 Manual Del Usuario

length can be increased when welding on the highest
settings, an arc length up to 20mm (0,8in). can be enough
when welding on maximum settings.
GENERAL WELDING TIPS
From time to time, some faults may be observed in the weld
owing to external influences rather then due to welding
machinè faults.Here are some that you may come across :
· Porosity
Small holes in the weld, caused by break-down in gas
coverage of the weld or sometimes by foreign bodies
inclusion. Remedy is, usually, to grind out the weld.
Remember, check before the gas flux (about 8
liters/minutes), clean well the working place and finally incline
the torch while welding.
· Spatter
Small balls of molten metal which come out of the arc. A little
quantity is unavoidable, but it should be kept down to a
minimum by selecting correct settings and having a correct
gas flow and by keeping the welding torch clean.
· Narrow heap welding
Can be caused by moving the torch too fast or by an
incorrect gas flow.
· Very thick or wide welding
Can be caused by moving the torch too slowly.
· Wire burns back
It can be caused by wire feed slipping, loose or damaged
welding tip, poor wire, nozzle held too close to work or
voltage too high.
· Poor penetration
It can be caused by moving torch too fast, too low voltage
setting or incorrect feed setting, reversed polarity, insufficient
blunting and distance between strips. Take care of
operational parameters adjustment and improve the
preparation of the workpieces.
· Workpiecès piercing
It may be caused by moving the welding torch too slow, too
high welding power or by an invalid wire feeding.
· Heavy spatter and porosity
Can be caused by nozzle too far from work, dirt on work or by
low gas flow. You have the two parameters, remeber that gas
must not be lower than 7-8 liters/min. and that the current of
welding is appropriate to the wire you are using. It is
advisable to have a pressure reducer of input and output. On
the manometer you can read the range expressed in liter.
· Welding arc instability
It may be caused by an insufficient welding voltage, irregular
wire feed, insufficient protective welding gas
1 INTRODUCTION
Ce poste à souder a été produit avec la moderne
technologie à inverter et il est indiqué pour la
soudure MIG-MAG/MOG conventionelle. Le poste
est compact, léger, fiable et maniable. Il gére de
façon automatique des paramètres qui aident à

5. FAULT FINDING

FAULT
Wire isn't
conveyed when
feed rolli s
turning
Wire feeding in
jerk or erratic
way
No arc
Porous welding
seams
The machine
suddenly stops
welding
operations after
an extended
and heavy duty
use
The machine is
switch off even
it is
FRANÇAIS
avoir une bonne soudure. Ce poste doit être utilisé
uniquement pour operations de soudure.
2 MIS EN MARCHE DU POSTE.
Avant de mettre en marche le poste, nous vous
prions de lire et comprendre le Manuel de Securité
qui est annexe au Manuel d'instruction. Le poste
REASON REMEDY
1. Dirt in liner Blow with
and/or contact tip compressed air,
2. The friction Replace contact tip
brake in the hub is Loosen
too tightened
3. Faulty welding Check sheating of
torch torches wire guide
1. Contact tip
defect
2. Burns in contact Replace
tip Replace
3. Dirt in feed rool Clean
Replace
groove
4. Feed roll's
groove worn 1. Bad contact Tighten earth
between earth clamp clamp and check
and workpiece connections
2. Short-circuit Clean, replace tip
between contact tip and/or shroud as
and gas shroud necessary
Clean gas shroud
1. Failure of gas from spatters
shield owing to
spatters in gas shro The length of stick
2. Wrong welding out wire from tip
torch distance and/or must be 5-10 mm
inclination from (0.2-0.4in).
workpiece Inclination not less
than 60° degrees in
relation to
3. Too small gas workpiece
flux Increase flux of
4. Humid welding gas
workpieces Dry with heat
5. Heavily rusted producer
workpieces Clean workpieces
from rust
1. welding machine Don't switch off the
overheated due to machine, let it cool
an excessive use in down for about
stated duty cycle 20/30 minutes
1. Fuse blowed on
the service Replace
transformer
6