Xnexus NXS 150, Operating Manual

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Notice NOT 083
NXS 150
Rev : 00
Date : 13/10/05
SAFETY
3.2. WORKING AREA
The use of arc welding implies a strict respect of safety conditions with regard to electric currents (Decree dated
14.12.1988).
It is necessary to check that no metal piece accessible to the operators and to their assistants can come into direct
contact with a phase conductor and the neutral of the network. In case of uncertainty, this metal part will be
connected to the earth with a conductor of at least equivalent section to the largest phase conductor.
Make sure that all metal pieces that the operator could touch with a non insulated part of his body (head, hands
without gloves on, naked arms ...) is properly grounded with a conductor of at least equivalent section to the
biggest supply cable of the ground clamp or welding torch. If more than one metal ground is concerned, they need
to be all interlinked in one, which must be grounded in the same conditions.
Unless very special care have been taken, do not proceed to any arc welding or cutting in
conductive enclosures, whether it is a confined space or the welding machine has to be left outside. Be even more
prudent when welding in humid or non ventilated areas, and if the power source is placed inside (Decree dated
14.12.1988, Art. 4).
3.3. INTERVENING
-Before carrying out any internal checking or repair work, check that the power source has been separated from the
electrical installation by locking and guard devices.
-The current plug has to be taken out. Provisions have to be taken to prevent an accidental connection of the plug
to a socket.
-Cut-off through a fixed connecting device has to be omnipolar (phases and neutral). It is in the "OFF" position and
cannot be accidentally put into operation.
-Maintenance works of electrical equipment must be entrusted to qualified people (Section VI, Art. 46).
3.4. MAINTENANCE
Check the good state, insulation and connection of all the equipment and electrical accessories: plugs and flexible
supply cables, cables (NF A 32-510), conduits, connectors, extension cables (NF A 85-610 and CENELEC HD
433), sockets on the power source, ground and electrode-holder clamps (NF A 85-600).
These connections and mobile accessories are marked according to standards, if consistent with the safety rules.
They can be controlled either by you or by accredited firms.
- Maintenance and repair works of conduits and liners have to be properly carried out (Section VI, Art. 47).
-Repair or replace all defective accessories
-Check periodically that the electrical connections are tightened and do not heat.
USER’S MANUAL
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