E-7

TROUBLESHOOTING

E-7

 

OUTLINE FOR DC-1000 TROUBLESHOOTING GUIDE

 

If troubleshooting guide indicates a possible P.C. board problem, the following guide can be used to locate the problem.

NO WELDER OUTPUT (INPUT CONTACTOR “ON”. 2 AND 4 CLOSED)

CHECK CONTROL BOARD

LED5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IF

OFF

 

 

 

 

 

 

IF ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHECK LED1

 

 

CHECK FIRING BOARD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LED’S

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IF OFF

IF ON

 

 

 

 

ALL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NINE LIGHTS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHECK AC

REPLACE

SHOULD

 

 

 

 

 

BE ON

 

 

 

 

 

INPUT TO

CONTROL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTROL

BOARD

 

 

 

 

 

 

 

 

 

 

 

BOARD -

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IF YES

 

IF NO

POSSIBLE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DEFECTIVE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHECK GATE LEAD

CHECK LIGHTS

T2 TRANSFORMER

 

 

 

 

 

CONNECTIONS

 

7,8,9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TO SCR’S

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IF

 

ONE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IF ON

 

AND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OR MORE

 

 

OTHER LIGHTS

 

 

MACHINE HAS OUTPUT

 

ARE OUT

 

 

ARE OUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Jumper 2-4) BUT TRIPS

CHECK AC INPUT

 

 

 

 

 

 

 

OFF IMMEDIATELY

 

 

 

 

 

 

 

 

TO BOARD,

 

 

REPLACE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

203-204, 205-206

 

 

FIRING

 

 

 

 

 

 

 

 

 

 

 

207-208 -- POSSIBLE

 

BOARD

 

 

 

 

 

 

 

 

 

 

 

CHECK FOR SHORT

 

 

CHECK

LEADS

 

DEFECTIVE

 

 

 

 

 

BETWEEN ELECTRODE AND

 

73, 74, 75, 76, 77 FOR

 

AUXILIARY

 

 

 

 

 

WORK LEADS, REMOVE

 

 

GROUND TO

WINDINGS ON MAIN

 

 

 

 

EXTERNAL LEADS FROM

 

 

NEGATIVE OUTPUT

TRANSFORMER

 

 

 

 

 

THE OUTPUT TERMINALS

 

 

TERMINAL

 

 

 

 

 

 

 

 

 

 

 

 

 

CHECK FOR OPEN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IN LEADS 203, 204

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

205, 206, 207, 208

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ERRATIC WELDING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IF TROUBLE STILL PERSISTS,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHECK LED 3 ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHECK PROCEDURE

 

 

 

 

 

 

CONTROL BOARD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PROPER POSITION FOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHECK MODE SWITCH FOR

 

 

IF LIGHT GOES ON, THEN

 

 

 

 

PROCESS

BEING USED

 

 

 

 

 

QUICKLY OUT WHEN START

 

 

 

 

 

 

 

 

 

 

 

 

 

BUTTON IS PRESSED,

 

CHECK LED’S 1 THRU 6

FOR EQUAL BRILLIANCY

 

 

CONTROL BOARD IS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DEFECTIVE AND SHOULD

 

IF LIGHTS ARE NOT ALL APPROXIMATELY EQUALLY

 

 

BE REPLACED

 

 

BRIGHT, REPLACE FIRING P.C. BOARD

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

IDEALARC® DC-1000

Page 23
Image 23
Lincoln Electric IM420-D manual Jumper 2-4 but Trips, 203-204, Possible, 73, 74, 75, 76, 77 for, Leads 203 205, 206, 207

IM420-D specifications

The Lincoln Electric IM420-D is a high-performance industrial welding machine that offers advanced features and technologies tailored for demanding welding environments. Designed for arc welding applications, the IM420-D is a versatile solution suitable for various welding processes, including MIG, TIG, and stick welding. This flexibility makes it an excellent choice for both professional welders and industries that require a reliable and efficient welding system.

One of the standout features of the IM420-D is its impressive output range. With a maximum output of 420 amps, this machine can handle thick materials and deliver deep penetration, making it ideal for heavy-duty applications. The machine also provides consistent arc stability, ensuring high-quality welds with minimal spatter. This functionality is essential in maintaining productivity and reducing the need for post-weld cleanup.

The IM420-D incorporates advanced digital control technology that enhances user experience and precision. The intuitive interface allows operators to quickly adjust settings for voltage, wire feed speed, and other parameters, ensuring optimal performance for diverse welding tasks. Additionally, the machine is equipped with a memory function that saves preferred settings, enabling quick setup for repetitive jobs.

Another notable characteristic of the IM420-D is its robust construction. Built to withstand the rigors of a manufacturing environment, the machine features a durable casing designed to protect key components from dust, moisture, and impact. This reliability results in fewer maintenance issues and extended service life, contributing to lower operational costs over time.

The IM420-D also includes a range of safety features that prioritize operator protection. Overheat protection, voltage fluctuation safeguards, and high-quality electrical insulation ensure a safe working environment, minimizing the risk of accidents during operation.

In conclusion, the Lincoln Electric IM420-D is an exceptional welding machine that combines high output, advanced digital technology, and robust design. With its user-friendly controls and safety features, it meets the needs of professional welders and industries seeking efficiency and quality in their welding operations. Whether for manufacturing, construction, or repair work, the IM420-D stands out as a top-tier choice in the welding equipment market.