Installation; Positioning The Welding Machine; Welding Circuit Connection; Welding Circuit Connections In Mig-Mag Mode - Berner INVERTER 145 Manual De Instrucciones

- Adjustment of the welding seam (arc length)
MANUAL MIG-MAG:
- Adjustment of the welding seam (welding voltage)
TIG:
- Not enabled.
MMA:
- Not enabled
3- LCD display
4- selection, if pressed of the SPOOL GUN
5- LED torch setting indicator T1, T2 and SPOOL GUN

5. INSTALLATION

INSTALLATION AND POWER CONNECTION OPERATIONS.
Unpack the welding machine and assemble the separate parts included in the
package.

5.1 POSITIONING THE WELDING MACHINE

Choose the place where the welding machine is to be installed so that there are no
obstructions to the cooling air inlets and outlets; at the same time make sure that
conductive dust, corrosive vapours, humidity etc. cannot be drawn into the machine.
Leave at least 250 mm of free space all around the welding machine.
- Before making any electrical connection, check the rating plate data on the welding
machine to make sure they correspond to the voltage and frequency of the available
power supply where the machine is to be installed.
- The welding machine must be connected only and exclusively to a power supply with
the neutral conductor connected to earth.
- To guarantee protection against indirect contact use the following types of residual
current devices:
- Type A ( ) for single-phase machines.
- Type B ( ) for 3-phase machines.
- In order to satisfy the requirements of the EN 61000-3-11 (Flicker) standard we
recommend connecting the welding machine to the interface points of the main
power supply that have an impedance of less than Zmax = 0.24 ohm.
- The IEC/EN 61000-3-12 Standard does not apply to the welding machine.
If the welding machine is connected to an electrical grid, the installer or user must
make sure that the machine can indeed be connected (if necessary, consult the
company that manages the electrical grid).
(1~)
circuit-breaker; the corresponding earth terminal should be connected to the (yellow-
green) earth conductor of the power supply.
(3~)
earth terminal should be connected to the earth conductor (yellow-green) of the power
supply line.
Table (TAB. 1) shows the recommended delayed fuse sizes in amps, chosen according
to the max. nominal current supplied by the welding machine, and the nominal voltage
of the main power supply.

5.3 WELDING CIRCUIT CONNECTION

CONNECTIONS, MAKE SURE THE WELDING MACHINE IS OFF AND
DISCONNECTED FROM THE MAINS.
Table 1 (TAB. 1) gives the recommended values for welding cables (in mm
to the maximum energy supplied by the welding machine.
In addition:
- Fully rotate the welding cable connectors in the quick couplings (if present), to
guarantee perfect electric contact; if this is not the case the connectors will overheat
- Use the shortest welding cables possible.
- Do not use metal structures that are not part of the workpiece to replace the welding
Fig. E
FIG. F
FIG. G
current return cable; this can endanger safety and give unsatisfactory welding
results.

5.3.2 WELDING CIRCUIT CONNECTIONS IN MIG-MAG MODE

- Loadable gas cylinder on the support surface of the trolley: max 30kg (where
available).
reduction supplied as an accessory, when Argon gas or an Argon/CO
- Connect the input hose of the gas reducer and tighten with the strip.
- Loosen the adjustment ring nut of the pressure reducer before opening the cylinder
valve.
(*) Accessory to purchase separately if not supplied with the product.
Connect the cable to the piece to be welded or the metal bench on which the workpiece
is placed, as close as possible to the joint being worked.
contact pipe, to make exiting easier.
- Open the reel area door.
- MIG/MAG welding (gas):
- Connect the torch cable to the red clamp (+) (Fig. B-18)
- Connect the clamp return cable to the negative fast coupling (-) (Fig. B-19)
- FLUX welding (no gas):
- Connect the torch cable to the black clamp (-) (Fig. B-19).
- Connect the clamp return cable to the positive fast coupling (+) (Fig. B-18).
- Close the reel area door.
- MIG/MAG welding (gas):
- Connect the torch cable to the torch coupling (Fig. B-4).
- Connect the fast coupling plug (Fig. B-7) to the positive coupling plug (+) (Fig. B-5).
- Connect the clamp return cable to the negative fast coupling (-) (Fig. B-6).
- FLUX welding (no gas):
- Connect the torch cable to the torch coupling (Fig. B-4).
- Connect the fast coupling plug (Fig. B-7) to the negative coupling (-) (Fig. B-6).
- Connect the clamp return cable to the positive fast coupling (+) (Fig. B-5).

5.3.3 WELDING CIRCUIT CONNECTION IN TIG MODE

- Screw the pressure reducer onto the gas bottle valve, placing the relative reduction
supplied as an accessory between them;
- Connect the gas input hose to the pressure reducing valve and tighten the supplied
strip.
- Loosen the adjustment ring nut of the pressure reducing valve before opening the
gas bottle valve.
- Open the gas bottle and adjust the quantity of gas (l/min.) according to the
welding, always using the ring nut of the pressure reducer. Check the seal of the
hoses and connections.
- Connect the cable to the piece to be welded or the metal bench on which the
workpiece is placed, as close as possible to the joint being worked. Connect this
cable to the clamp with the symbol (+) (Fig. B-5).
of the torch to the cylinder.
5.3.4 WELDING CIRCUIT CONNECTIONS IN MMA MODE
Almost all the coated electrodes should be connected to the positive pole (+) of the
generator; an exception is the negative pole (-) for electrodes with acid coating.
Bring a special clamp on the clamp used to tighten the exposed part of the electrode.
Connect this cable to the clamp with the symbol (+) (Fig. B-5).
- Connect the cable to the piece to be welded or the metal bench on which the
workpiece is placed, as close as possible to the joint being worked. Connect this
cable to the clamp with the symbol (-) (Fig. B-6).

5.4 LOADING THE WIRE SPOOL (Fig. H, H1, H2)

MAKE SURE THE WELDING MACHINE IS SWITCHED OFF AND DISCONNECTED
MAKE SURE THAT THE WIRE FEEDER ROLLERS, THE WIRE GUIDE HOSE AND
THE CONTACT TIP OF THE TORCH MATCH THE DIAMETER AND TYPE OF WIRE
TO BE USED AND MAKE SURE THAT THESE ARE FITTED CORRECTLY. WHEN
INSERTING AND THREADING THE WIRE DO NOT WEAR PROTECTIVE GLOVES.
- Open the reel compartment door.
- Position the wire reel on the spindle, holding the end of the wire upwards; make sure
2
) according
the tab for pulling the spindle is correctly seated in its hole (1a).
- Release the pressure counter-roller(s) and move them away from the lower roller(s)
(2a);
- Make sure that the towing roller(s) is suited to the wire used
- Free the end of the wire and remove the distorted end with a clean cut and no burr;
turn the reel anti-clockwise and thread the end of the wire into the wire-guide infeed,
- Re-position the counter-roller(s), adjusting the pressure to an intermediate value, and
- 7 -
mix is used.
2
Fig. B
Fig. B
.
.