Lincoln-electric VANTAGE IM10044 User Manual download pdf (Page 25)

B-7

OPERATION

B-7

Unlike other VRD’s Lincoln uses micro processor con-

trol to monitor and establish the arc without the stick-

ing and shorting of the electrode to the job as seen in

many other VRD installations. Due to the requirement

of the resistance in the circuit to be low, for a VRD to

operate, a good metal-to-metal contact must be made

between the metal core of the electrode and the job.

Any damaged connection anywhere in the output cir-

cuit may limit the operation of the VRD. This includes

a good connection of the work return clamp and the

job. The work return clamp should be connected close

as practical to where the welding will be performed.

Some electrodes form a cone at the end of the elec-

trode after the welding arc has been broken, particu-

larly iron powder and low hydrogen electrodes.

This cone will need to be broken off in order to have

the metal core of the electrode to make contact.

STARTING TECHNIQUE

The starting technique that has successfully overcome

the problem is the push, twist, and peel technique.

This technique requires the operator to push the elec-

trode into the joint and twist.

The Push and Twist breaks off the cone and allows

the metal electrode to make contact.

The peel and lift of the electrode establishes a con-

trolled start to the welding arc. Normal welding tech-

nique for the application is then used.

BREAK-IN PERIOD

The engine used to supply power for your welder is a

heavy duty, industrial engine. It is designed and built

for rugged use. It is very normal for any engine to use

small quantities of oil until the break-in is accom-

plished. Check the oil level twice a day during the

break-in period. In general this takes 50 to 100 hours

of operation.

IMPORTANT

IN ORDER TO ACCOMPLISH THIS BREAK-IN, THE

UNIT SHOULD BE SUBJECTED TO HEAVY

LOADS, WITHIN THE RATING OF THE MACHINE.

AVOID LONG IDLE RUNNING PERIODS.

TYPICAL FUEL CONSUMPTION

Refer to Table B.1 for typical fuel consumption of the

VANTAGE® 575 CUMMINS Engine for various oper-

ating settings.

VANTAGE® 575 CUMMINS

NOTE:

This data is for reference only. Fuel consumption is

approximate and can be influenced by many factors, includ-

ing engine maintenance, environmental conditions and fuel

quality.

Table B.1

Cummins B3.3 Engine Fuel Consumption

Cummins B3.3 Running Time for

36Kw(48HP) 94.6L(25GAL.)

@1500 RPM (Hours)

Low Idle - 1.6 L/hour 59.5

no load 1300 RPM

High Idle - 2.0 L/hour 47.3

no load 1590 RPM

DC CC Weld 5.3 L/hour 17.8

Output 450

Amps @ 38 Volts

Auxiliary Power 4.2 L/hour 21.0

12,000 V A

20,000 V A 8.0 L/hour 11.8

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Lincoln-electric VANTAGE IM10044 User Manual Page 25

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