Cloos NexT 452 AC, Operating Instructions Manual

Page: 23 / 234

23
In daily welding practice there are particular danger spots for
the user because of the power source configuration and the
MIG/MAG welding process.
Keep hands, hair, clothes and tools away from moving parts such as:
• Toothed wheels
• Fans
• Wire coils and welding wires
• Motor shafts of any type
• Please thread the welding wire with utmost caution into the wire feed
nozzle !
• Never touch rotating toothed wheels and drive parts of the wire feed unit.
• When the welding wire comes out of the current contact tube it may hurt
the hand, the eyes or the face. Therefore, do not turn the MIG/MAG torch
to the body when threading the wire.
• Do not release the start key during maintenance work at the torch!
• Do not touch the workpiece before and after welding - Danger of burning.
(Warning: Be careful with aluminium - no annealing colours!).
• Covers and side panels must only be opened or removed during mainte-
nance or repair works.
• Make sure that during operation all covers and side panels are closed and
duly assembled by means of toothed conical spring washers (earthing).
• Before welding is started, make sure that the negative line (earth) is
correctly connected to the power source and workpiece (stray welding
currents).
• Gas cylinders contain a gas under pressure (200 - 300 bar); in the case
of damage, large quantities of expanding gas can suddenly be released.
(Kinetic energy
 the gas cylinder becomes a missile!).
• Gas cylinders with compressed gas must be protected against heat, me-
chanical shocks (impacts), open flames, sparks and direct contact with the
arc.
• The gas cylinder must always be secured against “falling down”; we rec-
ommend to secure it on the cylinder holder of the power source.
• Never move a gas cylinder without protective cap for the valve!
• Please observe the national and international regulations regarding the
use of gas cylinders and accessories.
3.5 Particular dangers when MIG/MAG welding
WARNING!
WARNING!
ATTENTION!