Page 2 - WARNING; ARC WELDING can be hazardous.
– 2 – PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH. KEEP CHILDRENAWAY. PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING. Read and understand the following safety highlights. For additional safety information it is strongly recommended that youpurchase a copy o...
Page 3 - ELECTRIC AND MAGNETIC FIELDS
– 3 – FOR ENGINEpowered equipment. 7.a. Turn the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running. --------------------------------------------------------------------------------------- 7.b. Operate engines in open, well-ventilated areas o...
Page 5 - TABLE OF CONTENTS; Page
– 5 – TABLE OF CONTENTS Page GENERAL DESCRIPTION ..................................................................................................................7 SPECIFICATIONS ...........................................................................................................................
Page 6 - Thank You; as much pride as we have in bringing this product to you!; Please Examine Carton and Equipment For Damage Immediately
– 6 – Thank You for selecting a QUALITY product by Lincoln Electric. We want youto take pride in operating this Lincoln Electric Company product ••• as much pride as we have in bringing this product to you! Read this Operators Manual completely before attempting to use this equipment. Save this manu...
Page 8 - INSTALLATION; Location; tripping; ELECTRIC SHOCK can kill.
INSTALLATION P l e a s e r e a d a l l o f t h i s s e c t i o n b e f o r e s t a r t i n ginstallation. Refer to Figure 1 during installation. Location Place the welder where clean cooling air can freelycirculate in through the front louvers, and out throughthe rear louvers. The presence of dirt, ...
Page 9 - Figure 1
Page 10 - Table 1; C ambient location. Refer to your local or national electrical; RECOMMENDED INPUT WIRE AND FUSE SIZES
– 10 – Table 1 208V / 60 Hz 230V / 60 Hz 460V / 60 Hz 575V / 60 Hz 200V / 50/60 Hz 220V / 50/60 Hz 380V / 50/60 Hz 400V / 50/60 Hz 415V / 50/60 Hz 440V / 50/60 Hz 500V / 50/60 Hz 130 117 59 47 138 125 73 69 66 63 55 1/0 1/0 4 6 2/0 1/0 4 4 4 4 6 6 6 8 8 4 6 6 8 8 8 8 200 175 100 75 225 200 125 100 1...
Page 11 - Figure 2; Output Connections
T h e r e a r e t w o p a i r s o f s t u d s f o r t h e n e g a t i v econnection. It is important to use the correct pair ofstuds, depending on the processes in use. NOTE:DO NOT CONNECT BOTH PAIRS OF NEGATIVESTUDS TOGETHER. USE EITHER ONE PAIR, ORTHE OTHER, BUT NEVER CONNECT BOTH PAIRSTO THE WORK...
Page 12 - Wire Feeder Control Cable Connections; Figure 3
leads A, B, and C, connect A to 75, B to 76 and C to77, connect lead 2 to terminal 2, lead 4 to terminal 4,e t c . C o n n e c t t h e g r e e n g r o u n d l e a d t o t h e s t u dmarked . – 12 – Wire Feeder Control Cable Connections Lincoln wire feeders can be hooked up to either the14-pin Wire F...
Page 13 - Figure 4; EXPLANATION OF CONTROLS
– 13 – C o n n e c t i o n o f a K 7 7 5 R e m o t e O u t p u t Control F e e d t h e r e m o t e c o n t r o l c a b l e t h r o u g h t h e b o xconnector on the case front, to provide a strain relieffor the cable. Connect the numbered leads in thecontrol cable to the like numbered terminals on t...
Page 15 - OPERATING INSTRUCTIONS; S e e a dd i t i o n a l w a r n i n g i n fo r m a t i o n a t
– 15 – OPERATING INSTRUCTIONS ELECTRIC SHOCK can kill. • Do not touch electrically live parts or electrode with skin or wet clothing. • I n s u l a t e y o u r s e l f f r o m w o r k a n d ground. • Always wear dry insulating gloves. -----------------------------------------------------------------...
Page 18 - Installation with an NA-3; PROTECTIVE CIRCUITRY; Thermostatic Protection
Set the control panel switches as follows:------------------------------------------------------------------------Mode: GMAW ------------------------------------------------------------------------Output Local or Remote (See “ Output Control Control: Switch ” ) --------------------------------------...
Page 19 - Power Source Troubleshooting; TROUBLESHOOTING; ELECTRIC SHOCK; Routine Maintenance
– 19 – Power Source Troubleshooting Most welding equipment problems, particularly in newinstallations, can be traced to incorrect installation orincorrect procedures. Be sure that the DC-650 PROi s p r o p e r l y c o n n e c t e d , a l l a c c e s s o r i e s a n d w i r efeeders are working corre...
Page 24 - CAUTION; ERROR; ERROR CODES DISPLAYED ON VOLTMETER WHEN AMMETER DISPLAYS
– 24 – TROUBLESHOOTING Observe all Safety Guidelines detailed througout this manual If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact yourLocal Lincoln Authorized Field Service Facility for technical troubleshooting assistance befo...
Page 25 - Procedure for Troubleshooting PC Boards
– 25 – If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact yourLocal Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed. CAUTION Procedure for Troubleshooting PC Boards Before replac...
Page 26 - Meter PC Board
Protection PC Board The protection PC Board is located on the back of thecontrol box. It protects the PC Board from electricalnoise. Most of the circuits on the Protection board ares t r a i g h t t h r o u g h c o n n e c t i o n s . T h e b o a r d c a n b echecked out in the field with a continui...
Page 28 - DIMENSION PRINTS; UNITS
– 28 – G A B 3.25 27.50 32.70 39.95 GAS CYLINDERSUPPORT .406 DIA.MTG. HOLES F C H E 22.25 20.00 27.87 N.A. - Optional K-842 Undercarriage also available. See next page. A C E D FRONT OFWELDER R P L M U* V * LOCATION OF .406 DIA. MOUNTING HOLES B S W* H* K J* DIMENSION PRINTS DC-650 PRO WITH A K817 U...
Page 29 - This parts list is provided as an informative guide only.
11-1-96 P-223 P-223 PARTS LIST FOR DC-650 PRO AND DC-750 This parts list is provided as an informative guide only. This information was accurate at the time of printing. However, since thesepages are regularly updated in Lincoln Electric ’ s official Parts Book (BK-34), a l w a y s c h e c k w i t h...
Page 30 - NOTES
Page 31 - Lincoln Welding School; BASIC COURSE; weeks of fundamentals
Now Available...12th EditionThe Procedure Handbook of Arc Welding With over 500,000 copies of previous editions published since 1933, the Procedure Handbook is considered by many to be the “ Bible ” of the arc welding industry. T h i s p r i n t i n g w i l l g o f a s t s o d o n ’ t d e l a y . P ...
Page 32 - ÇÃ
WARNING AVISO DE PRECAUCION ATTENTION WARNUNG ATEN ÇÃ O Spanish French German Portuguese Japanese Chinese Korean Arabic READ AND UNDERSTAND THE MANUFACTURER’S INSTRUCTION FOR THIS EQUIPMENT AND THE CONSUMABLES TO BEUSED AND FOLLOW YOUR EMPLOYER’S SAFETY PRACTICES. SE RECOMIENDA LEER Y ENTENDER LAS I...