PRO-POINT 8611311 Manuel D'utilisation page 30

8611311
PROBLEM(S) POSSIBLE CAUSE(S)
Porosity - small 1. Wrong gas.
cavities or holes
2. Inadequate gas flow or too
resulting from gas
pockets in weld
3. Moisture on the base metal.
metal.
4. Contaminated base metal.
5. Contaminated MIG wire.
6. Gas nozzle clogged with
7. Missing or damaged gas
8. MIG torch euro connect
Wire stubbing 1. Holding the torch too far
during welding
2. Welding voltage set too low.
3. Wire Speed set too high.
Lack of Fusion − 1. Contaminated base metal.
failure of weld
2. Not enough heat input.
metal to fuse
3. Improper welding technique.
completely with
base metal or a
proceeding weld
bead
Excessive Too much heat.
Penetration −
weld metal
melting through
base metal
Lack of 1. Poor in incorrect joint
Penetration −
shallow fusion
2. Not enough heat input.
between weld
3. Contaminated base metal.
metal and base
metal
MIG WIRE FEED
PROBLEM(S) POSSIBLE CAUSE(S)
No wire feed 1. Wrong mode selected.
2. Wrong torch selector switch.
Inconsistent / 1. Adjusting wrong dial.
interrupted
2. Wrong polarity selected.
wire feed
3. Incorrect wire speed setting.
4. Voltage setting incorrect.
30
180 MULTI-PROCESS MIG-ARC-TIG WELDER
much gas flow.
spatter, worn or out of shape
diffuser.
o-ring missing or damaged.
away.
preparation.
SUGGESTED SOLUTION(S)
1. Check that the correct gas is being used.
2. Check the gas is connected, check hoses, gas valve and
torch are not restricted. Set the gas flow between 21 to
30 CFH flow rate. Check hoses and fittings for holes,
leaks etc. Protect the welding zone from wind and drafts.
3. Remove all moisture from base metal before welding.
4. Remove materials like paint, grease, oil and dirt, including
mill scale from base metal.
5. Use clean dry rust free wire. Do not lubricate the wire
with oil, grease etc.
6. Clean or replace the gas nozzle.
7. Replace the gas diffuser.
8. Check and replace the o-ring..
1. Bring the torch closer to the work and maintain stick out
of 5 to 10 mm.
2. Increase the voltage.
3. Decrease the wire feed speed.
1. Remove materials like paint, grease, oil and dirt, including
mill scale from base metal.
2. Select a higher voltage range and /or adjust the wire
speed to suit.
3. Keep the arc at the leading edge of the weld pool. Gun
angle to work should be between 5 and 15°. Direct the
arc at the weld joint Adjust work angle or widen groove
to access bottom during welding. Momentarily hold arc
on side walls if using weaving technique.
Select a lower voltage range and /or adjust the wire speed
to suit Increase travel speed
1. Material too thick. Joint preparation and design needs to
allow access to bottom of groove while maintaining
proper welding wire extension and arc characteristics.
Keep the arc at the leading edge of the weld pool and
maintain the gun angle at 5 and 15° keeping the stick out
between 1/8 to 1/4 in.
2. Select a higher voltage range and /or adjust the wire
speed to suit Reduce travel speed.
3. Remove materials like paint, grease, oil and dirt, including
mill scale from base metal.
SUGGESTED SOLUTION(S)
1. Check that the TIG/ARC/MIG selector switch set to
MIG position.
2. Check that the standard/spoolgun selector switch
is set to standard position for MIG welding and
spoolgun when using the spoolgun.
1. Be sure to adjust the WIRE FEED and VOLTAGE
dials for MIG welding. The AMPERAGE dial is for
STICK and TIG welding mode.
2. Select the correct polarity for the wire being used
- see machine setup guide.
3. Adjust the wire feed speed.
4. Adjust the voltage setting.
For technical questions call 1-800-665-8685
V1.0