Page 2 - SAFETY; WARNING; CALIFORNIA PROPOSITION 65 WARNINGS; The Above For Diesel Engines
FOR ENGINEpowered equipment. 1.a. Turn the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running. ____________________________________________________ 1.b. Operate engines in open, well-ventilated areas or vent the engine exhaust fumes outdoors....
Page 5 - PRÉCAUTIONS DE SÛRETÉ
Mar. ‘93 iv SAFETY iv PRÉCAUTIONS DE SÛRETÉ Pour votre propre protection lire et observer toutes les instructions et les précautions de sûreté specifiques qui parraissent dans ce manuel aussi bien que les précautions de sûreté générales suiv- antes: Sûreté Pour Soudage A L’Arc 1. Protegez-vous contr...
Page 6 - Thank You; Please Examine Carton and Equipment For Damage Immediately
Thank You for selecting a QUALITY product by Lincoln Electric. We want you to 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 manual and...
Page 7 - TABLE OF CONTENTS
vi vi TABLE OF CONTENTS Page General Information .....................................................................................................................1 Product Description ...................................................................................................................
Page 8 - GENERAL INFORMATION; PRODUCT DESCRIPTION
1 GENERAL INFORMATION SPREADARC 1 PRODUCT DESCRIPTION General Physical Description The K278-1 Spreadarc has been designed to oscillatean Automatic welding head across the line of travelwhen welding long seams. The welding head and noz-z l e a r e m o u n t e d t o t h e S p r e a d a r c c a r r i a...
Page 9 - COMMON EQUIPMENT PACKAGES; BASIC PACKAGE
2 COMMON EQUIPMENT PACKAGES SPREADARC 2 K1288-17 K325S K210-2 K212A K231-1/8 K278-1 K1842-10 K29 K219 DC 600 Power Source TC-3 Travel Carriage NA-3 Control NA-3N Head Subarc Contact Nozzle Spreadarc Weld Cable Vertical Lift Adjuster Automatic Flux Hopper BASIC PACKAGE K1797-xx Control Cable (10’ inc...
Page 10 - TECHNICAL SPECIFICATIONS; INPUT VOLTAGE AND CURRENT
3 TECHNICAL SPECIFICATIONS SPREADARC 3 SPREADARC (K279-1) Voltage Input Amperes 42/1/50/60 3.0 INPUT VOLTAGE AND CURRENT HEIGHT WIDTH DEPTH WEIGHT 13.7 in. 17.8 in. 12.6 in. 65 lbs (348 mm) (452.12 mm) (320.04 mm) (29.5 kg) PHYSICAL DIMENSIONS ENVIRONMENTAL RANGES Operating Temperature -4°F to 104°F...
Page 11 - INSTALLATION; NON-STANDARD SAFETY INFORMATION; INPUT CONNECTIONS; LOCATION
A-1 INSTALLATION SPREADARC A-1 NON-STANDARD SAFETY INFORMATION ELECTRIC SHOCK can kill. • Turn off power at the power sourced i s c o n n e c t s w i t c h b e f o r e w o r k i n ginside the equipment. ------------------------------------------------------------------------ INPUT CONNECTIONS • Only...
Page 12 - HIGH FREQUENCY PROTECTION
A-2 INSTALLATION SPREADARC A-2 3. Remove the head mounting block from the NA-3, NA-4, NA-5, or POWER FEED-10S head (if includ-ed) by removing the four allen head cap screws.This part is not used during the installation of theSpreadarc. Mount the head to the Spreadarc usingthe two 1/2-13 X 1.00 hex h...
Page 13 - CONNECTION DIAGRAM
A-3 INSTALLATION SPREADARC A-3 CONNECTION DIAGRAM Connection to 42Vac Power Source (See Figure A-3) Required: • 42Vac Power Source. • K1797-xx Control Cable (10ft. included with K278-1). • K278-1 Spreadarc. • NOTE: K1798 Terminal Strip Adapter may be nec- essary if power source 14-pin connector is u...
Page 14 - OPERATION; CASE FRONT CONTROL DESCRIPTION
B-1 OPERATION B-1 CASE FRONT CONTROL DESCRIPTION (See Figure B-1) 1. ON/OFF SWITCH – Turns power on/off to the unit. 2. START BUTTON – Starts the oscillation based on the values set in each of the modes. 3. STOP BUTTON – Stops oscillation. 4. JOG SWITCH – The Jog Switch will move the oscil- lation c...
Page 15 - USER INTERFACE CONTROLS
B-2 OPERATION SPREADARC B-2 USER INTERFACE CONTROLS SETTING OSCILLATION SPEED (See Figure B-2) Oscillation Speed is the speed in inches per minutethat the Spreadarc carriage will travel back and forth.To adjust the Oscillation Speed, press the SelectToggle Switch up or down until the LED for Oscilla...
Page 16 - COMMON WELDING PROCEDURES
B-3 OPERATION B-3 COMMON WELDING PROCEDURES Set the oscillation speed and the rear and front dwelltimes as called for in the welding procedure. The frontdwell time controls the dwell when the nozzle is at theproximity sensor farthest from the Spreadarc mount-ing bracket (right-side when facing the S...
Page 17 - MAINTENANCE; SAFETY PRECAUTIONS; PERIODIC MAINTENANCE
D-1 MAINTENANCE D-1 SPREADARC SAFETY PRECAUTIONS ELECTRIC SHOCK can kill. • Turn off power at the power sourcedisconnect switch before workinginside the equipment. ----------------------------------------------------------------------- WARNING PERIODIC MAINTENANCE (See Figure D-1) "V" Tracks...
Page 18 - CONTROL BOX
D-2 MAINTENANCE D-2 5. With the control box and carriage out of the way, a c c e s s t o t h e t r a c k f a s t e n e r s I t e m 1 2 c a n b e gained. 6. Inspect the four "V" bearings on the carriage to veri- fy that they rotate freely and are not excessivelyworn. 7. Note: Do not loosen th...
Page 19 - WIRING DIAGRAMS
F-1 WIRING DIAGRAMS F-1 SPREADARC NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The specific diag ram for a particular code is pasted inside the machine on one of the enclosure panels. If the diagram is illegible, write to the Service Depar...
Page 20 - DIMENSION PRINT