Migatronic MK III Manuel D'instruction page 10

DESCRIPTION OF FUNCTIONS
The MIG range is comprised of 5 machines of
different welding capacity:
MIG 385 C
MIG 445 C
The machines are divided into the following main
modules: power source, wire feed unit, (Compact-
machines), indicator panel and optional water
module.
A separate wire feed unit is used for the S
machines. The following types can be used for MIG:
MWF 8, MWF 11, MWF 21
Please note that it is necessary to mount af plug kit
(order no. 78861195 or 78861196) in the power
source in order to use a MWF 11 and MWF 21 wire
feed unit.
These wire feed units can be equipped with different
control kits if required (please see the MWF instruc-
tion manual).
Power source
The power source consists of a three-phase welding
transformer, two voltage selector switches, a rectifier
and an inductor. The power source has always
cooling with automatic stop. Approx. 4 min after the
last welding the fan stops and starts automatically
by a new welding. The fan will start running when the
internal temperature is above 60
If the power source is equipped with a cooling unit
both this and the fan in the power source will start
running.
Indicator panel
The indicator panel indicates errors and shows
whether the machine is turned on.
Wire feed unit
The wire feed unit has always 4-roll drive system.
For many welding operations it is recommended to
use 4-roll drive, especially when welding with flux-
cored wire. Furthermore, it is essential to use wire
feed rolls which correspond to the dimension of the
wire and to use torch liners of the correct diameter
and material in the welding torch (see the section
concerning Connection to MIG/MAG).
Water module
The water module consists of a water tank, a water-
cooling system and a water pump.
All manuals and user guides at all-guides.com
MIG 385 S
MIG 445 S
MIG 545 S
o
C.
INITIAL OPERATION
Mains connection
The machine must be connected to a three-phase
mains supply and it is important to ensure that the
mains supply voltage is in accordance with the
voltage to which the machine is built. The safety
conductor (earth) is yellow/green.
The machine is equipped with a thermal cut-out
protecting against overload of the machine and ex-
cession of max. current for the mains cable. It is
possible to select the mains fuse so the mains
cable is only protected against short-circuits. The
protection indicated on the type plate of the machine
will provide protection against both overcurrent and
short circuits.
Configuration
MIGATRONIC disclaims
damaged cables and other damages related to
welding with under sized welding torch and welding
cables measured by welding specifications e.g. in
relation to permissible load.
How to connect the gas
The gas hose, which comes from the intermediary
cable or the rear of the machine, should be
connected to a stabil gas supply.
Assembly of the earth cable
The earth cable (negative pole) is fitted to the induc-
tance outlet wanted (depending on the dimension of
the welding wire). (Pos. 2-3-4-5 for S-model or pos.
4-5 for C-model).
Assembly of the welding torch (C-model)
The welding torch is fitted to the central adaptor
(pos. 2 page 11), and the connection is fastened by
hand. If the machine has a water module the two
water hoses are fitted to the quick release con-
nectors for water.
Wire feeding (C-model)
The wire roll combination to the chosen wire dia-
meter can be seen from the figure page 14.
How to connect the separate wire feed unit
(S-model)
The machine is always delivered with a MWF 8 wire
feed unit.
The plug kit for the MWF 11/21 wire feed units can
be mounted according the mounting instructions
which can be found together with the plug kit (please
look at page 45).
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