Welbach OMEGA 500-2.0 Manual De Instrucciones página 14

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3.3.5 Connecting the cooler
Work with currents from 200 A and higher, requires liquid cooling of the MIG torch.
Welder Omega 500-2.0 is adjusted to liquid cooling of MIG/MAG torches. MIG/MAG torch features
necessary cabling and the wire feeder is equipped with proper cooling liquid circuit terminals. In the back
part of the device there are:
• Liquid circulation pipe terminals: blue - inlet; red - outlet (terminals are located on the back part of the
wire feeder - to connect the cooler and on the front part of the wire feeder to connect the welding
MIG/MAG torch).
• Cooler power socket. Voltage in the socket appears on connection of the main switch of the welder,
thanks to which it is not necessary to remember switching on the coolers each time - the switch in
the front panel of the cooler should be in ON position (the feeding socket of the cooler is placed on
the back part of the welder).
The front part of the welder includes terminals to which the MIG welding torch hoses are connected. In
the front panel of the cooler, there is a power supply switch which allows for switching off the cooler even
when the welder is on - if the switch remains in the ON position, the cooler automatically switches on and
off in line with the welder. Fill the tank with liquid through the door in the front cooler panel. Open the
door, remove the tank pulling it towards yourself and refill the liquid to the desired level. Fill the cooler with
distilled water or special fluid for aluminium coolers.
• Liquid circulation hose terminals (1) - in the back part of the wire feeder (cooler connection):
1
• Liquid circulation hose terminals (1) - in the front part of the wire feeder (MIG/MAG welding torch
connection):
1
• Cooler power socket (1) - in the back part of the welder:
1
3.4 Omega 500-2.0 sockets and terminals
3.4.1 Front panel of the welder
1 2
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1; 2 - current clamps for chassis ground connection for
MIG as well as chassis ground and electrode holder
for MMA
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3.4.2 Back welder panel
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7
6
1. cooler power socket
2. ground terminal
3. current clamp "+" for connection with the wire feeder
4. gas heater safety device
5. gas heater socket
6. socket of the control conduit which connects the wire feeder to the welder
7. main switch
3.4.3 Rear panel of the wire feeder
1
2
1. liquid cooling system terminals
3 2. gas connection
3. terminal of the control conduit which connects the wire feeder
with the welder
4. OPERATION
4.1 Supported processes
4.1.1 MMA welding
MMA welding is the oldest method of electrical welding of metal materials, which is applied up to date. High
temperatures of the electrical arc melt the material in the weld site. The electrode melts simultaneously,
providing the filler metal and creating a welding seam. The electrode coating emits gases while melting which
stabilise the electrical arc, protect the liquid metal against the influence of the surrounding air and decrease
burning out of the alloying components. The melting coating also produces slag which is lighter than the
liquid metal, flows onto the welding seam and solidifies there. It results in slowed down cooling and lower
contracting pressure connected with it. The type of used electrodes depends on the welded material and
the type of welding performed. Information on the electrode properties can be found on the producer's site.
The main advantage of MMA welding is the lack of necessity of shield gas application and low price of devices
and used materials.
4.1.2 Half-automatic MIG/MAG welding
MAG and MIG are the most common methods of welding applied in production of welded constructions. It
is also defined as half-automatic welding. This process uses the heat energy generated by the electrical arc.
The arc sparks between the welded material and a consumable electrode - a wire which is fed with constant
speed by the wire feeding unit.
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