Troubleshooting - ims PRO MULTIWELD 250T Manual Del Usuario

ELECTRODE WELDING
• The reverse polarity cable must be disconnected in MMA (stick welding) mode in order to connect the electrode holder and earth
clamp. Connect the electrode holder and earth clamp as indicated on the electrode packaging.
• Respect the basic rules of welding.
• This device has 1 feature specific to Inverter machines :
- Anti-Sticking: Enables easy removal of the electrode from the metal. The anti-sticking feature, after its start, requires approxima-
tely a 3 seconds delay before resuming normal welding operations.
PROTECTION AND RECOMMENDATIONS
1 - Overheating:
This unit is equipped with a ventilation system regulated by the temperature of the device. When the unit switches to thermal
protection, it no longer delivers any current. The orange LED (fig. VI-1) lights up until the temperature of the unit has returned to
normal.
• Ensure the ventilation holes of the unit are not blocked to allow adequate air circulation.
• Leave the unit switched on after welding and during thermal protection to allow cooling.
2 - Overcurrent:
This unit is equipped with a primary current measurement. In case of overcurrent, the orange LED (fig. VI-1) lights up. In this case
the unit must be switched off and restarted.
3 - P400 (FV 220M only) :
This unit is equipped with primary overvoltage protection. In this case, the orange LED (fig. VI-1) will flash once per second.
4 - Observations:
• Respect the basic rules of welding.
• Ensure that there is sufficient ventilation.
• Do not work on a damp surface. To prevent gas leaks, use the clamps supplied in the accessory box.
- Make sure that the gas cylinder is held in place with the fixing collar, see fig. V.
- Set the gas flow rate by adjusting the control dial on the pressure regulator.

TROUBLESHOOTING

SYMPTOMS
The protection LED lights up
The protection LED flashes
(MULTIWELD FV 220M only)
The welding wire speed is not constant.
The wire-feeder motor doesn't operate.
Bad wire feeding.
No welding current
The wire jams (after the rollers)
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MULTIWELD 250T / 320T / FV 220M
POSSIBLE CAUSES
Exceeding the duty cycle
Ambient temperature above 40°C
Blocked air inlets
Mains voltage outside maximum tole-
rance
Debris is blocking up the opening.
The wire skids in the rollers.
Reel or roller brake too tight.
Electrical supply problem.
Covering wire guide dirty or damaged.
The drive roller is too loose
Reel brake too tight
Bad connection to the main supply
Bad earth connection.
Torch trigger inoperative.
Guide wire sheath crushed.
Wire jammed in the torch
No capillary tube.
Wire speed too fast
REMEDIES
Wait for the indicator to turn off before
resuming welding operations.
Observe the operating factor and ensure
good ventilation
Have your electrical installation checked
by a qualified person.
Clean out the contact batch or change it
and replace the anti-adherence product.
• Control the roller pressure or replace it.
• Wire diameter non-compatible with
roller.
• Covering wire guide in the torch
non-compatible.
Release the brake and rollers.
Check that the power switch is in the
«On» position.
Clean or replace
Tighten the drive roller knob
Release the brake
Check the mains connection and look
if the plug is fed by power socket.
Check the earth cable (connection and
clamp condition).
Check the torch trigger / replace torch
Check the sheath and torch body.
Clean or replace.
Check the presence of capillary tube.
Reduce the wire speed
EN