NS20A & NS20N Heavy Duty Gun Page 1 Revision 1.20 2/19/08
MANUAL CONTENTS
Gun Part Number
751-535-000 751-535-100 751-535-500 751-693-000
Control Cable Connector
Cannon R&S Hubbell Hubbell
Weld Cable Connector
CamLok CamLok CamLok Dinse
Note: All these guns are equipped with a steel Tranquil-Arc
®
Plunge Dampener
TABLE OF CONTENTS
MANUAL CONTENTS...........................................................................................................................................................1
GUN SETUP FOR WELDING STEEL STUDS .....................................................................................................................2
Accessory Installation ........................................................................................................................................................2
Plunge Adjustment.............................................................................................................................................................2
Free Travel Adjustment .....................................................................................................................................................2
Lift Adjustment ...................................................................................................................................................................3
Nelweld Power Sources .................................................................................................................................................3
Series 4800 & Series 5000 (TR-1600)...........................................................................................................................4
Series 6000 (TR-2400) ..................................................................................................................................................4
Series 3000 (NS-20A HD)..............................................................................................................................................5
WELD INSPECTION .............................................................................................................................................................6
Visual Inspection................................................................................................................................................................6
Physical Inspection ............................................................................................................................................................6
SEQUENCE OF OPERATIONS ...........................................................................................................................................7
Exploded View ...................................................................................................................................................................8
Parts List ............................................................................................................................................................................9
MAINTENANCE INSTRUCTIONS ......................................................................................................................................10
Part Number Designation ................................................................................................................................................10
Disassembly of Gun.........................................................................................................................................................11
Examination and Cleaning of Gun Parts .........................................................................................................................12
Reassembly of Gun .........................................................................................................................................................12
Installing New Control Cables -Welding Gun #751-535-000...........................................................................................13
Installing New Control Cables -Welding Gun #751-535-100...........................................................................................13
Installing New Control Cables -Welding Gun #751-535-500 & #751-693-000................................................................13
Installing New Weld Cables -All Guns .............................................................................................................................14
DIMENSIONS AND SPECIFICATIONS..............................................................................................................................15