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F-26

TROUBLESHOOTING & REPAIR

F-26

 

CHOPPER MODULE CAPACITOR DISCHARGE PROCEDURE (CONTINUED)

FIGURE F.2 - CHOPPER MODULE CAPACITOR TERMINAL DISCHARGE

INSULATED

PLIERS

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B1

B4

B2

B5

B3

B6

 

 

 

 

 

 

INSULATED

 

 

 

 

 

 

GLOVES

 

 

 

 

 

 

 

 

 

NEVER USE A SHORTING STRAP TO DIS-

 

 

WARNING

 

 

 

 

CHARGE CAPACITORS. If the Lincoln recom-

 

 

ELECTRIC SHOCK can kill.

mended resistor, or an equivalent resistor is used,

 

 

• Do not touch electrically hot parts.

the capacitors can be discharged by holding the

 

 

resistor with insulated pliers and using the resistor

 

 

 

 

 

 

• Prior to performing preventative

terminals to bridge Chopper Module terminals B1

 

 

maintenance, perform the following

to B2, and B4 to B5. DO NOT TOUCH THE TER-

 

 

capacitor discharge procedure to

MINALS OR METAL PARTS OF THE PLIERS

 

 

avoid electric shock.

WITH YOUR BARE HANDS. Hold the resistor in

 

 

 

 

place for about 10 seconds.

 

DISCHARGE PROCEDURE

If another type of resistor is used, jumper leads

 

may need to be attached to the resistor. The

 

1. Turn the engine off.

leads can then be used to connect terminals

 

B1 to B2, and B4 to B5.

 

2. Perform the Case Cover Removal procedure.

 

4. Using the volt/ohmmeter, check the voltage

 

NOTE: It is necessary to remove the fuel cap in

 

across B1 and B2, then B4 and B5. It should

 

 

order to take the case cover off the

be zero volts in both cases.

 

 

machine. Be sure the fuel cap is ON when

 

 

 

 

 

discharging the chopper module capaci-

 

 

 

 

 

tors.

 

 

 

3.Locate the chopper module and capacitor assembly on the inner machine baffle. See Figure F.2 and the Wiring Diagram.

VANTAGE® 400

Page 74
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Lincoln Electric 400 service manual Discharge Procedure, Never USE a Shorting Strap to DIS

400 specifications

The Lincoln Electric 400 is a state-of-the-art multi-process welding machine designed to meet the demands of today’s industrial welding applications. Renowned for its reliability and versatility, this welder is a preferred choice among professionals in fabrication, construction, and maintenance industries.

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In conclusion, the Lincoln Electric 400 stands out in the welding equipment market due to its multi-process capabilities, impressive power output, user-friendly interface, durability, and portability. It is engineered to exceed the expectations of professional welders, providing them with the tools needed for high-quality results across a variety of applications.