Page 2 - WELDING EQUIPMENT SAFETY; WARNING
i i 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 outdo...
Page 5 - iv; PRÉCAUTIONS DE SÛRETÉ
iv WELDING EQUIPMENT SAFETY iv PRÉCAUTIONS DE SÛRETÉ Pour votre propre protection lire et observer toutes les instruc- tions et les précautions de sûreté specifiques qui parraissent d a n s c e m a n u e l a u s s i b i e n q u e l e s p r é c a u t i o n s d e s û r e t é générales suivantes: Sûret...
Page 6 - LOAD BANK SAFETY
v LOAD BANK SAFETY v The load bank is an industrial test unit designed to beused indoors or outdoors (sheltered from moisture).However, because the nature of the load bank’s func-tion is the dissipation of electrical energy, electricalenergy is transformed into heat by the resistor ele-ments. The he...
Page 7 - Thank You; Please Examine Carton and Equipment For Damage Immediately
vi MASTER LOAD 750 vi 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...
Page 8 - vii; TABLE OF CONTENTS
MASTER LOAD 750 vii TABLE OF CONTENTS DESCRIPTION TECHNICAL SPECIFICATIONS.........................................................................................1SAFETY PRECAUTIONS ...................................................................................................2GENERAL DESCRIPTI...
Page 9 - DESCRIPTION; TECHNICAL SPECIFICATIONS – MASTER LOAD 750
1 MASTER LOAD 750 1 82 dBA at 3 ft DESCRIPTION TECHNICAL SPECIFICATIONS – MASTER LOAD 750 INPUT – POWER LOAD CAPABILITY PROTECTION FUSES COOLING BLOWER Height Width Depth 34.75 in 24 in 28.5 in 883 mm 610 mm 724 mm PHYSICAL DIMENSIONS 120 VOLT, 15 A, 60 Hz , SINGLE PHASE 750 Amps @50V AC or DC (in i...
Page 10 - GENERAL DESCRIPTION; CONTROL UNIT; ENCLOSURE; CAUTION
GENERAL DESCRIPTION The Master Load 750 Load Bank is designed for elec-trically loading and testing power sources. The unit isdesigned for production line and job site use. The total loading capability of the Master Load 750 isin fixed steps of 25, 25, 50, 50, 100, 250, 250 Amps@ 50V AC or DC, total...
Page 11 - INSTALLATION; BEFORE INSTALLATION; POWER REQUIREMENTS
3 INSTALLATION MASTER LOAD 750 3 BEFORE INSTALLATION Inspect the Load Bank for obvious damage such asb r o k e n w i r e s , b r o k e n o r d e n t e d p a n e l s , c r a c k e dceramic insulators, or any other component breakagethat may have occurred in shipment. LOCATION The Master Load 750 is a...
Page 12 - OPERATION; PURPOSE AND USE OF CONTROLS; OPERATING INSTRUCTIONS
4 OPERATION 4 PURPOSE AND USE OF CONTROLS 1. POWER ON/OFF switch - Turns on cooling fanand powers remainder of control circuit. Red lightshows POWER ON. 2. BLOWER FAIL indicator - The purpose of theBLOWER FAIL lamp is to warn the operator andremove the load to the load bank in case of an airfailure ...
Page 13 - MAINTENANCE; SAFETY PRECAUTIONS; DAILY
5 MAINTENANCE 5 SAFETY PRECAUTIONS Before servicing, read and observe all safetyprecautions throughout this manual. ELECTRIC SHOCK can kill. • Only qualified personnel should perform this maintenance. • T u r n t h e i n p u t s u p p l y p o w e r OFF at the disconnect switch orfuse box before work...
Page 14 - TROUBLESHOOTING & REPAIR
6 TROUBLESHOOTING & REPAIR 6 MASTER LOAD 750 If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact theLincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 216-383-2531 or1-800-833-93...
Page 15 - PROBLEMS
7 TROUBLESHOOTING & REPAIR 7 MASTER LOAD 750 Observe all Safety Guidelines detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln ElectricService Department for technical troubleshooting a...
Page 18 - DIAGRAMS; MASTERLOAD 750 - WIRING DIAGRAM
10 DIAGRAMS 10 MASTER LOAD 750 D26300 3-5-97 MASTERLOAD 750 - WIRING DIAGRAM
Page 19 - MASTERLOAD 750 - DIMENSION PRINT
11 DIAGRAMS MASTER LOAD 750 11 SB2561 2-22-96 MASTERLOAD 750 - DIMENSION PRINT
Page 23 - NOTES