Instruction/ maintenance manual of the product DC-655 Lincoln Electric
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SVM142-A September , 2002 Safety Depends on Y ou Lincoln arc welding and cutting equipment is designed and built with safety in mind. However , your overall safety can be increased by pr oper installation .
Retur n to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SAFETY i i IDEALARC DC-655 FOR ENGINE po wered equipment. 1.a. T ur n the engine off bef ore troubleshooting and maintenance wor k unless the maintenance work requires it to be running.
Retur n to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SAFETY ii ii IDEALARC DC-655 ARC RA YS can burn. 4.a. Use a shield with the proper filter and cov er plates to protect your e yes from sparks and the ra ys of the arc when welding or observing open arc welding.
Retur n to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SAFETY iii iii IDEALARC DC-655 FOR ELECTRICALL Y po wered equipment. 8.a. T ur n off input power using the disconnect switch at the fuse bo x before working on the equipment.
Retur n to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SAFETY iv iv IDEALARC DC-655 PRÉCAUTIONS DE SÛRETÉ Pour votre pr opre protection lir e et observer toutes les in.
MASTER T ABLE OF CONTENTS FOR ALL SECTIONS v v IDEALARC DC-655 Page Safety ............................................................................................................................... ..................i-iv Installation ............
Retur n to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC T ABLE OF CONTENTS - INST ALLA TION SECTION - Section A-1 Section A-1 IDEALARC DC-655 Installation ...................................................................
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC A-2 A-2 IDEALARC DC-655 INS.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC INST ALLA TION A-3 A-3 IDEA.
Read this entire installation section before you start installation. SAFETY PRECAUTIONS ELECTRIC SHOCK can kill. • Only qualified personnel should perform this installation. • T ur n the input power OFF at the disconnect switch or fuse box befor e working on this equipment.
INPUT POWER SUPPL Y CONNECTIONS A qualified electrician should connect the input power supply leads. 1. Follow all national and local electrical codes. 2. Use a three-phase line. 3. Remove the input access door at upper rear of the machine. 4. Follow input supply connection diagram located on the inside of the door .
OUTPUT CONNECTIONS ELECTRODE AND WORK CABLES Use the shortest possible cable lengths. See T able A.1 for recommended cable sizes based on length. The output terminals are located at the lower fr ont of the welder behind a hinged door . Refer to Figure A.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC INST ALLA TION A-7 A-7 IDEA.
TERMINAL STRIPS T erminal strips are available behind the cover panel on the lower case front to connect wir e feeder control cables that do not have a 14-Pin MS-type connector . Refer to Figure A.3 for the location of this cover panel. These terminals supply the connections as shown in the following T erminal Strip charts.
Retur n to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Section B-1 Section B-1 IDEALARC DC-655 T ABLE OF CONTENTS - OPERA TION SECTION - Operation ..........................................................................
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC B-2 B-2 IDEALARC DC-655 OPERA TING INSTRUCTIONS Read and understand this entire section of operating instructions before operating the machine.
GENERAL DESCRIPTION The DC-655 is an ener gy efficient constant voltage DC power source that pr oduces outstanding arc charac - teristics for multiple CV or CC welding processes. Four models are available: Domestic - all 60 Hertz models except 230/460/575v .
1. INPUT POWER ON/OFF SWITCH - This tog- gle switch turns the machine on or off. Putting the switch in the ON position ener gizes the machine’ s input contactor applying input power to the machine. Switching the switch to the OFF position de-ener gizes the input contactor .
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC OPERA TION B-5 B-5 IDEALARC DC-655 CC mode may also be used for CC submer ged arc with appropriate ar c-sensing CC(VV) wire feeders if arc for ce is set high enough.
3. 42 V AC 10 AMP CIRCUIT BREAKER - This br eaker pr otects the 42 V AC auxiliary circuits locat- ed in the terminal strip and MS-receptacle. 4. 14-PIN MS-RECEPT ACLE - This connector pr o- vides easy connection for a wire feeder contr ol cable.
THERMAL SHUTDOWN This welder has thermostatic protection fr om exces- sive duty cycles, overloads, loss of cooling, and high ambient temperature. When the welder is subjected to an overload or loss of cooling, a thermostat will open.
WELDING PERFORMANCE LOW INDUCT ANCE TERMINAL The inside right Negative (-) terminal is lower choke inductance and presently is only r ecommended for welding with NR203Ni 1% procedur es. All other pr ocesses ar e to be welded using the outside right Negative (-) terminal with higher choke inductance.
T ABLE OF CONTENTS - ACCESSORIES - Accessories.................................................................................................................... .......Section C Field Installed Options ...............................................
FIELD INST ALLED OPTIONS K1482-1 Digital Ammeter/V oltmeter Kit - Installs easily to the front contr ol panel and provides digital display of actual welding voltage and amperage while welding.
The DC-655 can be used to power any of the following Lincoln Wire feeders: SEMI-AUTOMA TIC WIRE FEEDERS • DH-10 • LN-9* • LN-10 • LN-9 GMA* • LN-7 GMA* • LN-23P • LN-742 • LN-25 • LN.
NOTE: The connection diagram shown in Figure C.1 shows the electrode connected for positive polarity . T o change polarity: a. Set the Idealarc DC-655 POWER toggle switch to the OFF (0) position. b. Move the electrode cable to the negative (-) output terminal.
6. Connect NA-5/-5R wire feeder contr ol jumpers on V oltage Control Boar d. See NA-5/-5R Operator’ s Manual. NOTE: The connection diagram shown in Figure C.2 shows the electrode connected for positive polarity . T o change polarity: a. Set the Idealarc DC-655 POWER toggle switch to the OFF (0) position.
SEMIAUTOMA TIC WIRE FEEDERS CONNECTING THE LN-7 TO THE IDEALARC DC-655 (14-PIN MS RECEPT ACLE) 1. Set the POWER toggle switch to the OFF (0) posi- tion. 2. Disconnect main AC input power to the Idealarc DC-655. 3. Connect the electrode cable fr om the control cable to the “+” terminal of the welder and to the LN-7 wire feeder .
CONNECTING THE LN-7 TO THE IDEALARC DC-655 (TERMINAL STRIP) 1. Set the Idealarc DC-655 POWER toggle switch to the OFF (0) position. 2. Disconnect main AC input power to the Idealarc DC 655. 3. Connect the wire feeder contr ol cable leads to the Idealar c DC-655 terminal strip as shown in Figure C.
CONNECTING THE LN-8 OR LN-9 TO THE IDEALARC DC-655 (TERMINAL STRIP) 1. Set the Idealarc DC-655 POWER toggle switch to the OFF (0) position. 2. Disconnect main AC input power to the Idealarc DC-655. 3. Connect the wire feeder contr ol cable leads to the Idealar c DC-655 terminal strip as shown in Figur e C.
CONNECTING THE LN-8 OR LN-9 TO THE IDEALARC DC-655 (14-PIN MS RECEPT ACLE) 1. Set the POWER toggle switch to the OFF (0) posi- tion. 2. Disconnect main AC input power to the Idealarc DC-655. 3. Connect the electrode cable fr om the LN-8 or LN-9 to the “+” terminal of the welder .
NOTES IDEALARC DC-655 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC.
Retur n to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Section D-1 Section D-1 IDEALARC DC-655 T ABLE OF CONTENTS -MAINTENANCE- Maintenance .................................................................................
SAFETY PRECAUTIONS ELECTRIC SHOCK can kill. • Only qualified personnel should per- form this maintenance. • T ur n the input power OFF at the disconnect switch or fuse box before working on this equipment. • Do not touch electrically hot parts. GENERAL MAINTENANCE 1.
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC MAINTENANCE D-3 D-3 IDEALARC DC-655 DC-655 DC-655 2 15 14 10 8 3 3 4 1 1 7 1 13 12 9 5 6 FIGURE D.
NOTES IDEALARC DC-655 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC.
Retur n to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Section E-1 Section E-1 IDEALARC DC-655 Theory of Operation ..........................................................................................................
GENERAL DESCRIPTION The DC-655 is a three-phase, SCR contr olled DC power source. It is capable of either constant curr ent or constant voltage output. It is rated at 650 amps, 100% duty cycle with outstanding arc characteristics for multiple welding processes.
CONTROL BOARD, FIRING BOARD, SNUBBER/F AN, BOARD AND RECTIFICA TION The “neutrals” of the welding secondary windings in the main transformer are connected together , and the six starts are connected to the six Silicon Contr olled Rectifier (SCR) assemblies to form a six-phase output.
THEOR Y OF OPERA TION E-4 E-4 IDEALARC DC-655 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Ret.
SCR OPERA TION A silicon controlled r ectifier (SCR) is a three-terminal device used to control rather lar ge currents to a load. An SCR acts very much like a switch. When a gate signal is applied to the SCR, it is turned ON and there is current flow fr om anode to cathode.
NOTES IDEALARC DC-655 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC.
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Section F-1 Section F-1 IDEALARC DC-655 Tr oubleshooting & Repair Section ................................................................................. Section F How to Use T roubleshooting Guide .
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC HOW TO USE TROUBLESHOOTING GUIDE Service and repair should be performed by only Lincoln Electric Factory T rained Personnel.
TROUBLESHOOTING & REP AIR F-3 F-3 IDEALARC DC-655 Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Sometimes machine failures appear to be due to PC board failures.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-4 F-4 IDEALARC DC-655 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-5 F-5 IDEALARC DC-655 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-6 F-6 IDEALARC DC-655 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-7 F-7 IDEALARC DC-655 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-8 F-8 IDEALARC DC-655 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual.
TROUBLESHOOTING & REP AIR F-9 F-9 IDEALARC DC-655 Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual.
TROUBLESHOOTING & REP AIR F-10 F-10 IDEALARC DC-655 Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual.
TROUBLESHOOTING & REP AIR F-11 F-11 IDEALARC DC-655 Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual.
TROUBLESHOOTING & REP AIR F-12 F-12 IDEALARC DC-655 Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP A.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-14 F-14 IDEALARC DC-655 ELECTRIC SHOCK can kill.
4. Check for the presence of 42 V AC at the ter- minal strip ( #2 to #41). See the Simplified T rigger Diagram. 5. If 42 V AC is not present at the terminal strip, check the circuit br eaker and leads #42A and #41 at the P15 connector . See the Simplified T rigger Diagram.
9. Check continuity (zero ohms) fr om lead #41 (plug P15 pin-10) to plug J5-pin 1 at the fir- ing board. See the Simplified T rigger Diagram and Figure F .1. If a resistance of any value is indicated, check the associat- ed wires, plugs and thermostats.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-17 F-17 IDEALARC DC-655 FIRING BOARD TEST W ARNING Service and repair should be performed by only Lincoln Electric factory trained person- nel.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-18 F-18 IDEALARC DC-655 FIRING BOARD TEST (continued) FIGURE F .
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP A.
7. Connect a jumper wire fr om pin C (lead #2) to pin D (lead #4) at the 14-pin receptacle. See Figure F .5. (Or put the Output T erminal Switch in the ON position.) This should ini- tiate machine output at the welding termi- nals. LED 10 on the firing board should now be on.
12. T est for 9.5 VDC to 11.0 VDC between leads #231 and #215 on the firing board. Make sure the Mode Switch (SW2) is in a constant voltage (CV) position. Locate plug J5 on the firing board. Locate leads #231 (pin-13) and #215 (pin-12). See Figure F .
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP A.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-23 F-23 IDEALARC DC-655 MAIN TRANSFORMER (T1) VOL T AGE TEST (continued) FIGURE F .
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-24 F-24 IDEALARC DC-655 MAIN TRANSFORMER (T1) VOL T AGE TEST (continued) FIGURE F .
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-25 F-25 IDEALARC DC-655 MAIN TRANSFORMER (T1) VOL T AGE TEST (continued) 10.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-26 F-26 IDEALARC DC-655 15. Locate plug J5 on the firing board.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP A.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-28 F-28 IDEALARC DC-655 CONTROL TRANSFORMER (T2) TEST (continued) FIGURE F .
TROUBLESHOOTING & REP AIR F-29 F-29 IDEALARC DC-655 Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC 5. Locate the control transformer secondary leads.
TROUBLESHOOTING & REP AIR F-30 F-30 IDEALARC DC-655 Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Mas.
F-31 F-31 IDEALARC DC-655 Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR CONTROL BOARD TRANSFORMER (T3) TEST (continued) TEST PROCEDURE 1.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-32 F-32 IDEALARC DC-655 W ARNING INPUT CONT ACTOR TEST Service and repair should be performed by only Lincoln Electric factory trained personnel.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-33 F-33 IDEALARC DC-655 INPUT CONT ACTOR TEST (continued) TEST PROCEDURE 1.
TEST FOR CONT ACT CONTINUITY 1. Disconnect the main input supply power to the DC-655 machine. 2. Locate, label and remove the thr ee leads connected to the input contactor coil (X1/#256 and #255A). See Figure F .13. ELECTRIC SHOCK can kill. • Do not touch electrically hot parts.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-35 F-35 IDEALARC DC-655 W ARNING ST A TIC SCR TEST Service and repair should be performed by only Lincoln Electric factory trained personnel.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-36 F-36 IDEALARC DC-655 ST A TIC SCR TEST (continued) FIGURE F .
6. If a high or infinite resistance is indicated for both steps #4 and #5, SCR1 is not shorted. 7. If a low resistance is indicated in either steps #4 or #5, there is a shorted SCR in the out- put rectifier bridge. Repeat steps #4 and #5 for each of the six SCRs.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-38 F-38 IDEALARC DC-655 W ARNING ACTIVE SCR TEST Service and repair should be performed by only Lincoln Electric factory trained personnel.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-39 F-39 IDEALARC DC-655 ACTIVE SCR TEST (continued) FIGURE F .
4. Construct the circuit shown in Figur e F .17. One 6-volt lantern battery can be used. Set the voltmeter scale low , at approximately 0- 5 volts or 0-10 volts. a. T est the voltage level of the battery . Short leads (A) and (C). Close switch SW-1. Battery voltage should be 4.
TROUBLESHOOTING & REP AIR F-41 F-41 IDEALARC DC-655 Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Mas.
TROUBLESHOOTING & REP AIR F-42 F-42 IDEALARC DC-655 Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Mas.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-43 F-43 IDEALARC DC-655 This is the typical DC open circuit voltage waveform generated from a properly operating machine.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-44 F-44 IDEALARC DC-655 This is the typical DC open circuit voltage waveform generated from a properly operating machine.
TROUBLESHOOTING & REP AIR F-45 F-45 IDEALARC DC-655 Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC This is the typical DC open circuit voltage waveform generated from a properly operating machine.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-46 F-46 IDEALARC DC-655 This is the typical DC open circuit voltage wave- form generated from a pr operly operating machine.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-47 F-47 IDEALARC DC-655 This is the typical DC open circuit voltage wave- form.
INST ALLA TION F-48 F-48 IDEALARC DC-655 Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC This is NOT the typical DC open circuit voltage waveform.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP A.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-50 F-50 IDEALARC DC-655 CLEANING PROCEDURE 1. Remove the main input supply power to the machine.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP A.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-52 F-52 IDEALARC DC-655 PROCEDURE 1. Remove the input power to the DC-655 machine.
Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-53 F-53 IDEALARC DC-655 FIGURE F .
TROUBLESHOOTING & REP AIR F-54 F-54 IDEALARC DC-655 Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Mas.
TROUBLESHOOTING & REP AIR F-55 F-55 IDEALARC DC-655 Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC FIGURE F .
TROUBLESHOOTING & REP AIR F-56 F-56 IDEALARC DC-655 Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC MAIN TRANSFORMER AND CHOKE REMOV AL AND REPLACEMENT PROCEDURE (continued) MAIN TRANSFORMER REMOV AL 10.
TROUBLESHOOTING & REP AIR F-57 F-57 IDEALARC DC-655 Return to Section TOC Return to Section TOC Retur n to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Mas.
SVM ERROR REPORTING FORM We need to know if there are errors in our manuals. W e also value any suggestions as to additional tests or procedures that would make this SVM a better tool for you.
ELECTRICAL DIA GRAMS G-1 G-1 DC 655 Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Electrical Diagrams Section...........................................................................................Section G Wiring Diagram (60 Hz Domestic) (G3348-1).
G-2 ELECTRICAL DIA GRAMS DC 655 Wiring Diagram (G3348-1) BRASS 305 G2 G5 G4 G3 G1 G6 41 222 1 2 3 4 1 J7 2 G5 3 4 5 A B 2 GREEN (FRONT VIEW) RECEPTACLE (FRONT VIEW) (FRONT VIEW) 77 RECEPTACLE 41 14-PI.
G-3 ELECTRICAL DIA GRAMS DC 655 G-3 Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Ma.
G-4 ELECTRICAL DIA GRAMS DC 655 Firing Board Sc hematic (G2792) 7-17-98A G2792 G-4 Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return .
Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC G-5 ELECTRICAL DIA GRAMS SQ.
ELECTRICAL DIA GRAMS G-6 G-6 DC 655 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Mas.
ELECTRICAL DIA GRAMS G-7 G-7 DC 655 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Firing Board La yout (G2699-2) DESCRIPTION PART NO.
ELECTRICAL DIA GRAMS G-8 G-8 DC 655 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Thermal Fan/Sn ubber Board La yout (L10124-1) CAPACITORS = MFD/VOLTS ~.
NO TES DC 655 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC.
An important point after buying a device Lincoln Electric DC-655 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Lincoln Electric DC-655 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Lincoln Electric DC-655 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Lincoln Electric DC-655 you will learn all the available features of the product, as well as information on its operation. The information that you get Lincoln Electric DC-655 will certainly help you make a decision on the purchase.
If you already are a holder of Lincoln Electric DC-655, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Lincoln Electric DC-655.
However, one of the most important roles played by the user manual is to help in solving problems with Lincoln Electric DC-655. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Lincoln Electric DC-655 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
