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section at least équivalent to that of the largest phase
conductor.
H
welding work has to be carried out in a confined space,
the following extra précaution should be taken : -
Increased individuel protection
-Complete insulalion of the electrode holder
-The welding set should be kept outside the
confined space and if this is not possible, the low
voltage parts of the welding set should be insulated and
the workpiece earthing cable should be held
solder.
1.3 SERVICING
.Before carrying out any checking on the inside and
repair work, you should check that the equipment has
been separated from the ° lectricel installation by locking
and guard devices
-The current plug has been taken out. Provisions
are taken to prevent the accidentel connection of the
plug in a socket.
-The accidentel connection of the cable of a fixed
installation is made impossible.
-Cutout by way of a fixed connecting system is
single pole (phases and neutral). H is in the "OFF"
position, and cannot be accidentally put into opération.
.Some items of equipment corne with an HT.HF striking
circuit (shown by a plate). You should nover work inside
of the corresponding unit.
.Maintenance work on electrical equipment must be
entrusted to persons quelified to do such work.
DEVICES
1.4 WIRE FEED
(MIG.MAG
TIG
automatic processes)
-
Before working on the wire feed (changing the coil, wire
stuck, etc.) cut off the power supply whenever possible.
If this is not possible and particularly when changing the
wire, check that the wire or torch does not corne into
contact with matai parts.
Do not direct the wire output towards your lace or your
body.
Always wear gloves
in
place by
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