ESAB Mig 300i, Instruction Manual, Page: 17 / 24

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7.1 Inspection and cleaning
Check regularly that the welding power source is not clogged with dirt.
How often and which cleaning methods apply depend on: the welding process, arc
times, placement, and the surrounding environment. It is normally sufficient to blow
the dust out of the power source with dry compressed air (reduced pressure) once a
year.
Clogged or blocked air inlets and outlets otherwise result in overheating.
8 FAULT--TRACING
Try these recommended checks and inspections before sending for an authorised
service technician.
Type of fault Action
No arc.
S
Check that the mains power supply switch is turned on.
S
Check that the welding current supply and return cables are
correctly connected.
S
Check that the correct current value is set.
The welding current is
interrupted during welding.
S
Check whether the overheating protection has operated (fault
code E6 is displayed on the control panel).
S
Check the mains power supply fuses.
The overheating protection
cut--out frequently.
S
Make sure that you are not exceeding the rated data for the
welding power source (i.e. that the unit is not being
overloaded).
Poor welding performance.
S
Check that the welding current supply and return cables are
correctly connected.
S
Check that the correct current value is set.
S
Check that the correct wire is being used.
S
Check the mains power supply fuses.
9 ORDERING SPARE PARTS
ESABMig 300i is designed and tested in accordance with the international and Europe-
an standards IEC/EN 60974--1 and EN 60974--10. It is the obligation of the service unit
which has carried out the service or repair work to make sure that the product still
conforms to the said standard.
Repair and electrical work should be performed by an authorized ESAB serviceman.
Use only ESAB original spare and wear parts.
Spare parts may be ordered through your nearest ESAB dealer, see the last page of
this publication.
GB