ESAB Hefty II Quick start guide

TECHNICAL

BULLETIN

Date: 06-11-07

Product: Hefty II By: Jorge Santana

Subject: Clicking Contactor

Summary: Defective MIG Gun

THERMAL ARC TECHNICAL SUPPORT

Phone: 1-800-462-2782

Fax: 1-603-298-7402

www.thermadyne.com

Form 0002

82 Benning Street

West Lebanon, NH 03784

1-603-298-5711

Fax: 1-800-221-4401

“Exceeding Customer Expectations Through Performance Excellence"

Valued Thermadyne Customer,

It has come to our attention that in some cases the Contactor inside the Hefty II Feeder will only

“click-click” repetitively when the trigger gun is pressed.

The problem occurs when the MIG gun has one or both of the gun switch wires shorted to the Positive

weld circuit due to overheating from exceeding the current rating of the gun or other type of abuse.

This situation has been duplicated in our Engineering Lab by connecting the trigger wires to the

Positive fitting of the MIG gun.

In the event that you experience this problem we suggest to bring the MIG gun to an authorized

repair facility to be checked out.

For More information Contact:

Cut or damaged switch wires may get in contact with the

Positive terminal of the MIG Gun “Shorted MIG Gun”

making the Hefty II contactor to rapidly turn ON & OFF

making a loud “clicking” sound. In most cases this Shorted

Condition is not obvious in a visual inspection, please

bring your MIG Gun to an authorized repair facility

for full inspection.