Cebora BI-WELDER TIG 2040 DC-HF, Instruction Manual

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yourself from work and ground. 

1.3 Disconnect input plug or power before working on

machine. 

2  Breathing welding fumes can be hazardous to your

health. 

2.1 Keep your head out of fumes. 
2.2 Use forced ventilation or local exhaust to remove

fumes. 

2.3 Use ventilating fan to remove fumes. 
3  Welding sparks can cause explosion or fire.
3.1 Keep flammable materials away from welding. 
3.2 Welding sparks can cause fires. Have a fire extin-

guisher nearby and have a watchperson ready to use
it. 

3.3 Do not weld on drums or any closed containers. 
4  Arc rays can burn eyes and injure skin. 
4.1 Wear hat and safety glasses. Use ear protection and

button shirt collar. Use welding helmet with correct
shade of filter. Wear complete body protection.

5  Become trained and read the instructions before

working on the machine or welding. 

6  Do not remove or paint over (cover) label. 

2   GENERAL DESCRIPTIONS

2.1  SPECIFICATIONS

This welding machine is a DC power source built using
INVERTER technology, engineered to weld with all types of
coated electrodes (cellulosic type not included) and with TIG
welding process with scratch starting and high frequency.
Must not be used to defrost pipes.

2.2   

EXPLANATION OF THE TECHNICAL SPECIFI-
CATIONS LISTED ON THE MACHINE PLATE.

This machine  is manufactured according to the following
international standards: IEC 60974-1 - IEC 60974-3 -IEC
60974-10 CL. A - IEC 61000-3-12 - IEC 61000-3-11 

(see

note 2)

.

N°.

Serial number, which must be indicated on any 
type of request regarding the welding machine. 

Single-phase static transformer-rectifier 
frequency converter.

Drooping characteristic.

SMAW. Suitable for welding with covered electrodes.
TIG

Suitable for TIG welding.

U0.

Secondary open-circuit voltage 

X.

Duty cycle percentage. % of 10 minutes during 
which the welding machine may run at a certain 
current without overheating.

I2.

Welding current

U2.

Secondary voltage with current I2

U1.

Rated supply voltage
The machine has an automatic supply voltage selector.

1~ 50/60Hz     50- or 60-Hz single-phase power supply
I1 max.  This is the maximum value of the absorbed current.
I1 eff. 

This is the maximum value of the actual current 
absorbed, considering the duty cycle.

IP23S

Protection rating for the housing.
Grade 

3

as the second digit means that this 

equipment may be stored, but it is not 
suitable for use outdoors in the rain, unless 
it is protected.

Suitable for hazardous environments.

Note:

1- The machine has also been designed for use in envi-

ronments with a pollution rating of  1. (See IEC 60664).

2- This equipment complies with IEC 61000-3-11 provided

that the maximum permissible system impedance Zmax
is less than or equal to 0,426 at the interface point
between the user's supply and the public system. It is the
responsibility of the installer or user of the equipment to
ensure, by consultation with the distribution network
operator if necessary, that the equipment is connected
only to a supply with maximum permissible system
impedance Zmax  less than or equal to 0,426.

2.3   DESCRIPTION OF PROTECTIVE DEVICES

2.3.1.

Thermal protection

This machine is protected by a temperature probe, which
prevents the machine from operating if the allowable tem-
peratures are exceeded. Under these conditions the fan
keeps running and the LED M lights.

2.3.2.

Block protections.

If the open-circuit voltage exceeds the allowable value,
the machine shuts off and the tripping of this protection
device is signalled by LED 

N

flashing.

In this case shut the machine off and turn it back on. If the
situation persists, please contact technical service.
Another protection device is signalled by the wording E1
or E2 showing on display 

P

. Also in this case please con-

tact technical service.

2.3.3 Motor-driven generators

These must have a power equal to or greater than 6KVA,
and must not deliver a voltage greater than 260V. 

3  INSTALLATION

Make sure that the supply voltage matches the voltage
indicated on the specifications plate of the welding
machine.
When mounting a plug, make sure it has an adequate
capacity, and that the yellow/green conductor of the
power supply cable is connected to the earth pin.
The capacity of the overload cutout switch or fuses
installed in series with the power supply must be equiva-
lent to the absorbed current I1 of the machine.

3.1 START-UP

Only skilled personnel should install the machine. All con-
nections must be carried out according to current regula-
tions, and in full observance of safety laws (regulation CEI
26-10 - CENELEC HD 427).

3.2  DESCRIPTION OF THE EQUIPMENT

A - Procedure and mode selector switch

This push-button selects the welding procedure
(MMA or TIG) and mode.

In TIG mode there will always be two LEDs lit: one indi-
cating HF or striking start mode, and the other indicating
continuous or pulse mode with 2- or 4-stage command.

S