Usage Limits; Safety Standards - navod 255 Bedienungsanweisung

Digital type PROCESSOR ‐ only 255, 285, 305, 309, 351, 354, 384, 389, 405
A simple solution of having control over all functions for MIG/MAG welding.
Simple control and setting of all functions is secured by one potentiometer
and two buttons. Function LOGIC also makes an easy control possible. Machi‐
nes with this control are supplied with a digital voltampermeter with memory
in a standard way. A simple solution of having control allows setting values of
pre‐gas and post‐gas, function SOFT START, burning out of wire, spot and pul‐
se welding. Regulation allows setting two‐time and four‐time modes. Easy ad‐
vanced feeding of wire to wire feeder. Electronic regulation of speed of wire
feed manages feedback regulation of wire feed which secures constant set
speed of wire shifting.
Synergic type ‐ only 255, 285, 305, 351, 354, 384 and 405
It significantly makes setting of welding parameters possible. An operator sets
up the type of a program by using easy setting of diameter of welding wire
and used protective gas. Then you can simply set up voltage when you use
the switch and control unit Synergic chooses the best parameters of speed of
wire feed. Simple operating and setting of all functions is secured by one
potentiometer and two buttons. Function LOGIC also makes an easy control
possible. Machines with this control are supplied with a digital voltamperme‐
ter with memory in a standard way. A simple solution of having control allows
setting values of pre‐gas and post‐gas, function SOFT START, burning out of
wire, spot and pulse welding. Regulation allows setting two‐time and four‐
time modes. Easy advanced feeding of wire to wire feeder. Electronic regula‐
tion of speed of wire feed manages feedback regulation of wire feed which
secures constant set speed of wire shifting.
Usage limits
(EN 60974‐1)
The use of a welder is typically discontinuous, in that it is made up of effective
work periods (welding) and rest periods (for the positioning of parts, the rep‐
lacement of wire and underflushing operations etc. This welders are dimen‐
sioned to supply a 250 A, 280 A, 320 A, 350 A nominal current in complete sa‐
fety for a period of work 20% or 30% of the total usage time.
The regulations in force establish the total usage time to be 10 minutes. The
20% work cycle is considered to be 2 minute of the ten‐minute period of time.
If the permitted work cycle time is exceeded, an overheat cut‐off occurs to
protect the components around the welder from dangerous overheating.
Intervention of the overheat cut‐of is indicated by the lighting up of yellow
thermostat signal light (pos. 4, picture 1 A). After several minutes the over‐
heat cut off rearms automatically (and the yellow signal light turns itself off)
and the welder is ready for use again. Machines are constructed in complian‐
ce with the IP 21 protection level.
Safety standards
Welding machines must be used for welding and not for other improper uses.
Never use the welding machines with its removed covers. By removing the
cover's the cooling efficiency is reduced and the machine can be damaged. In
this case the supplier does not take his responsibility for the damage incurred
and for this reason you can´t stake a claim for a guarantee repair. Their use is
permitted only by trained and experienced persons. The operator must obser‐
ve CEI 26.9 HD 407, ISO/IEC 050601, 1993, ISO/IEC 050630, 1993 safety stan‐
dards in order to guarantee his safety and that of third parties.
DANGERS WHILE WELDING AND SAFETY INSTRUCTIONS FOR MACHINE
OPERATORS ARE STATED:
ČSN 05 06 01/1993 Safety regulations for arc welding of metals. ČSN 05 06
30/1993 Safety rules for welding and plasma cutting. The welding machine
must be checked through in regular inspections according to ČSN 33 1500/
1990. Instructions for this check‐up, see § 3 Public notice ČÚPB number 48/
1982 Digest, ČSN 33 1500:1990 and ČSN 050630:1993 Clause 7.3.
KEEP GENERAL FIREFIGHTING REGULATIONS!
Keep general firefighting regulations while respecting local specific conditions
at the same time. Welding is always specified as an activity with the risk of
a fire. Welding in places with flammable or explosive materials is strictly for‐
bidden. There must always be fire extinguishers in the welding place.
ATTENTION! Sparks can cause an ignition many hours after the welding has
been finished, especially in unapproachable places. After welding has been
finished, let the machine cool down for at least ten minutes. If the machine
has not been cooled down, there is a high increase of temperature inside,
which can damage power elements.
SECURITY OF WORK WHILE WELDING OF METALS CONTAINING LEAD,
CADMIUM, ZINK, MERCURY AND GLUCINUM
Make specific precautions if you weld metals containning these metals:
•
Do not carry out welding processes on gas, oil, fuel etc. tanks (even emp‐
ty ones) because there is the risk of an explosion. Welding can be car‐
ried out only according to specific regulations!!!
•
In spaces with the risk of an explosion there are specific regulations
valid.
PREVENTION FROM ELECTRICAL CURRENT INJURY
•
Do not carry out repairs with the generator live.
•
Before carrying out any maintenance or repair activeties,
disconnect the machine from the mains.
•
Ensure that the welder is suitably earthed.
•
The equipment must be installed and run by qualified personnel.
•
All connections must comply with the regulations in force (CSN EN
60974‐1) and with the accident prevention laws.
•
Do not weld with worn or loose wires. Inspect all cables frequently and
ensure that there are no insulation defects, uncovered wires or loose
connections.
•
Do not weld with cables of insufficient diameter and stop soldering if the
cables overheat, so as to avoid rapid deterioration of the insulation.
•
Never directly touch live parts. After use, carefully replace the torch or
the electrode holding gripers, avoiding contact with the parts connected
to earth.
SAFETY REGARDING WELDING FUMES AND GAS
•
Carry out purification of the work area, from gas and fu‐
mes emitted during the welding, especially when welding
is carried out in an enclosed space.
•
Place the welding system in a well aired place.
•
Remove any traces of varnish that cover the parts to be welded, in order
to avoid toxic gases being released. Always air the work area.
•
Don't weld in places where gas leaks are suspected or close to internal
combustion engines.
•
Keep the welding equipment away from baths for the removal of grease
where vapours of trichlorethylene or other chlorine containing hydrocar‐
bons are used as solvents, as the welding arc and the ultraviolet radiation
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