F.F. Group DWM 140 EASY, Original Instructions Manual

Page: 13 / 82

are obliged to weld a cistern, ALWAYS pas -
sivate it by filling it with sand or a similar
inert substance before starting any work.
NEVER use the Welder to melt frozen wa -
ter pipes.
VENTILATION
Together with the previous instructions, the
following precautions should be strictly ob-
served.
WELDING ENVIRONMENT VENTILA -
TION
Ventilate the cut environment carefully.
Maintain sufficient airflow to avoid toxic
or explosive gas accumulation. Cut pro -
cesses on certain kinds or combinations
of metals can generate toxic fumes. In the
event of this happening, use air-supply
respirators. BEFORE cut, read and under -
stand the welding alloy safety provisions.
ELECTRIC SHOCK
Together with the previous instructions, the
following precautions should be strictly ob-
served to reduce the risk of electric shock.
ELECTRIC SHOCK INJURY
DO NOT touch a person suffering from
electric shock if he/she is still in contact
with the cables. Switch the mains power
source off immediately THEN provide as -
sistance.
CABLE CONTACT
Do not tamper with power cables if the
mains power is still switched on. Do not
touch the welding circuitry. Welding cir -
cuitry is usually low voltage, however, as
a precaution, do not touch the welder
electrodes.
CABLE AND PLUG PRECAUTIONS
Check the power supply cable, plug and
wall-socket regularly. This is particularly
important if the equipment is relocated
often.
REPAIRS
Never attempt to repair the Welder your -
self. The result would not only cause war -
ranty cancellation but also high danger
risks.
MAINTENANCE PRECAUTIONS
Always check that the electric power supply
has been disconnected before performing
any of the maintenance operations listed
in this manual ( e.g. before replacing any
of the following: worn electrodes, welding
wires, the wire feeder etc.)
Never point the welding gun or the elec-
trode towards yourself or others.
ELECTROMAGNETIC COMPATIBILITY
Check no power supply cables, telephone ca-
bles or other electrical items (e.g. computer
cables, control lines etc.) are in the vicinity of
the cut.
Check there are no telephones, televi -
sions, computers or other transmission
devices close to the Welder.
Make sure that people with pace-makers
are not in the immediate vicinity of the
Welder.
Do not use the Welder in hospitals or
medical environments (including veteri-
nari surgeries). Make especially sure there
is no electrical medical equipment being
used close to where welding is being
done.
Should the Welder interfere with other
apparatus, take the following precaution -
ary measures:
Check the Welder’s side panels are se -
curely fastened.
Shorten the power supply cables.
Place EMC filters between the Welder and
the power source.
EMC compatibility: CISPR 11, Group 2,
Class A.
This Class A equipment is not intended
for use in residential locations where
the electrical power is provided by the
public low-voltage supply system. There
may be potential difficulties in ensuring
electro-magnetic compatibility in those
locations, due to conducted as well as ra-
diated disturbances.
This equipment does not comply with IEC
61000-3-12. If it is connected to a public
low voltage system, it is the responsibility
of the installer or user of the equipment to
ensure, by consultation with the distribu-
tion network operator if necessary, that
the equipment may be connected.
This equipment is suitable for using in in-
dustrial environment switch mains power
protected by residual current operated cir-
cuit-breaker (time delay), Type B and trip-
ping current of >200 mA.
INVERTER ADVANTAGES
ƒ
Inverter designed using the latest
i.g.b.t. (ultra fast) technology
ƒ
55 khz operating frequency
ƒ
“Digit driver” control
ƒ
35%-100% operating range
ƒ
Arc force automatic increase of welding
current to stabilize welding on stick out
English | 13
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DWM 140 EASY