WIA W67-1, Руководство оператора

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9 TROUBLE SHOOTING CHART
Problem Likely Reason Outcome
GMAW/MIG Models
The machine feeds
slowly and then speeds
up after 3-5 seconds.
Creep mode is selected, or
machine has a permanent
creep mode function.
Some models have a creep
mode function that cannot be
adjusted. Other models have
a push button selection for
creep mode on/off.
Nothing happens for
first x seconds after
trigger is pulled.
Pre gas is selected to
x seconds
Allow for Pre Gas time, or
adjust time.
The arc starts normally
but then stops
x seconds.
Spot time is selected to
x seconds.
Spot time selection should be
adjusted to 0 seconds.
The arc does not stop
after trigger is released.
Latch mode is selected Latch mode should be
switched off.
Motor continues to
run once arc is
extinguished.
Latch mode is selected Latch mode should be
switched off.
Weld is contaminated
with small bubbles
(presence of porosity).
Air in the gas hose. The torch
gas hose has not been purged
sufficiently.
The gas hose is not securely
connected at the machine or
at the regulator.
Air is being drawn into arc
through torch nozzle.
Purge the system and confirm
sufficient gas flow through the
regulator.
Ensure the gas connections
from regulator through to
the torch connection are
sufficiently tightened.
Remove nozzle, check O ring
on torch head, check condition
of insulator in nozzle.
Wire feed stutters and
arc is erratic. Also,
motor turns correctly
with roller tension
removed.
Torch consumables are
blocked/partially blocked.
Rusty MIG wire.
Liners and contact tips are
consumable and wear over
time.
Replace the torch liner and
reduce wire feed tension.
Presence of porosity
at weld start.
The torch gas hose has not
been purged sufficiently.
Purge the system and confirm
sufficient gas flow through the
regulator.