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

Page: 14 / 82

changing
ƒ
Antisticking realize automatic shut -
down after about 3 seconds in case of
short circuit between electrode and
welding piece to avoid pasting
ƒ
Hot start automatic increase of current
at the beginning of welding.
SELECTABLE WELDING METHODS
MMA WELDING
Electric MMA (Metal Manual Arc) and
SMAW (Shielded Metal Arc Welding) are
both manual procedures exploiting the
heat generated by an electric arc that is pro-
duced when covered welding electrodes
make contact with the workpiece.
It is a very common procedure, mainly due
to its versatility. In fact, workpieces can
be welded together anywhere at all: in
a workshop, in the open, or even in con -
fined spaces and unreachable areas. Fu -
thermore a wide variety of electrodes are
available to satisfy all needs.
MMA welding with AC or DC current uses so
called “drooping” generators. DC current is
usually preferred due to the quality of the
end result and the wide range of electrodes
that can be used.
The important parameters of MMA
welding are the weld current and the dy-
namics. The weld current identifies the
diameter and the type of electrode that
can be used. The dynamics demonstrate
the response speed of the welding unit in
varying arc conditions.
CONNECTION TO POWER SUPPLY
Before plugging the unit in, check the
power supply voltage, phase and frequen-
cy. The permissible voltage is shown on
the unit nameplate.
Ensure the welder is earthed.
Also check that the plug provided with
the unit is compatible with the local pow-
er grid socket.
Make sure that the power supply is suffi -
cient to operate the welder.
The power cable supplied with the weld-
er should not be extended but, if that
becomes necessary, either an identical
or greater cross-section cable should be
used according to the final cable length.
All models require a three-wire cable
(positive, negative and earth).
OUTPUT CONNECTIONS
The welding cables are connected using
fast connector plugs.
Consult the following chapters of this
manual for information regarding the
connections re-quired for MMA.
OPERATING CONTROLS AND OPTIONS
DESCRIPTION
The DWM 140EASY series is a DC inverter
MMA welder. This unit uses 1~Phase 230V,
50HZ AC power. A 25 amp time delay fuse
or circuit breaker is recommended. The
DWM 140EASY series is ideal for Do-It-Your -
self projects or for light maintenance. Stick
weld carbon steel, stainless steel.
UNPACKING
ƒ
Remove cartons, bags or Styrofoam
containing the welder and accessories.
ƒ
After unpacking unit, inspect carefully
for any damage that may have occurred
during transit. Check for loose, missing,
or damaged parts. Shipping damage
claim must be filed with carrier.
TECHNICAL DATA
Article number 45 484
Model DWM 140 EASY
Type Electrode
Rated voltage
V 230
Hz 50/60
Max rated input current A 25
Rated input capacitance KVA 5,75
No-load voltage V 68
Rated working voltage V 25,6
MMA welding current A 20~140
Rated duty cycle % 2000%
Welding current (10min) A 20%@140
10min/100% A 63
Efficiency η 0,85
Power factor Cosφ 0,65
Insulation class H
Enclosure protection IP 21S
Cooling type Air
Weight kg 3
Dimension L*W*H cm 32x10x18
IDENTIFICATION
1. POWER INDICATOR - When the machine
is turned on, the power indicator will be
on.
2. ALARM INDICATOR - When the ther -
mal indicator is on, it shows the machine
is overloaded and the internal temper-
ature is too high. Weld output will turn
off automatically but the fan will still be
working. When the internal temperature
| English 14 DWM 140 EASY