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© 2016 Nelson Stud Welding, Inc.  

 Page 21 

All Rights Reserved. 

February 2016 

Part No. 729-110-042 v1.03

 

7  Exploded Drawings & Parts List 

7.1  Parts List 

Item Number  PART NUMBER  

QTY 

DESCRIPTION 

502-001-261 

FOOT 

504-001-056 

8mm x 110mm LEG ASM - NS-40 

511-001-131 

SPARK SHIELD 

524-005-003 

SCREW,M4X6 FPSS  

524-005-007 

SCREW,M8X8 FPSS 

524-005-097 

SCREW,M5X5 FPSS ZINC DIN913 

524-005-100 

SCREW,M4X16 OHMS ZINC 

524-005-101 

SCREW,M5X16 FHSC ZINC 

524-005-103 

SCREW,M3X5 LHS DIN7984 

10 

524-005-104 

NUT M5 THICK 

11 

524-005-105 

SCREW,M5X10 SHC DIN912 

12 

526-001-233 

SPRING,COMPRESSION 

13 
 

526-001-234 
 

 

SPRING,MAIN,NCD GAP GUN (Factory Installed) 
 

14 

526-001-235 

SPRING,LIFTING RING  

15 

526-001-268 

SPRING,MAIN,NCD GAP GUN HEAVY CONTACT (Not 
Installed) 

16 

713-032-000 

SPLICE,WIRE,#16-20  

17 

720-517-000 

WELD CABLE JUMPER 

18 

720-519-081 

WELD CABLE ASM 

19 

721-268-010 

CONTROL CABLE ASM 

20 

726-013-002 

COLLET 

21 

729-023-017 

WASHER 5mm CONICAL SPRING  

22 

751-003-029 

DUST BELLOWS 

23 

751-458-016 

LIFTING RING  

 

 

Summary of Contents for NCD+ Auto-Gap Gun

Page 1: ...d safe practices for arc welding equipment we urge you to read AWS SP Safe Practices available from the American Welding Society Do not permit untrained persons to install operate or maintain the equi...

Page 2: ...s previously afforded Nelson s personnel a reasonable opportunity to inspect and repair said equipment at buyer s facility or such other location as is mutually agreeable Notice to Nelson must be give...

Page 3: ...y conductor causes localized Electric and Magnetic Fields EMF Welding and cutting current creates EMF around welding cables and welding machines Therefore 1 Operators having pacemakers should consult...

Page 4: ...nded purpose Do not modify it in any manner 1 Use the proper gas for the process and use the proper pressure reducing regulator designed to operate from the compressed gas cylinder Do not use adaptors...

Page 5: ...tting Up Foot and Leg Assembly 12 3 3 Setting Spring Pressure Auto Gap Mode 13 3 3 1 Setting Travel Lift and Spring Pressure in Gap Mode 13 3 3 2 Setting Spring Pressure in Contact Mode 14 3 3 3 Chang...

Page 6: ...o 729 110 042 v1 03 7 3 2 Triggering Contact 24 7 4 Gun Coding 24 7 4 1 Dismantling Reassembling Gap Contact Welding Guns 24 8 Schematics 25 8 1 NCD CTRL TO GUN 12 PIN Auto Gap 25 8 2 Specifications 2...

Page 7: ...vides superior weld reliability with aluminum and other non ferrous metals Contact welding is generally used with carbon steel and stainless steel especially when weld appearance is not a prime consid...

Page 8: ...ion tip is flashed off leaving an arc space 3 The remaining stored energy is discharged across the arc space Stud and base material are heated 4 The spring pressure plunges the stud into the work piec...

Page 9: ...and two wires that go to the trigger When the trigger is pulled the stud rises off the workpiece The gun de energizes and the main spring then pushes the stud back towards the workpiece The arc begin...

Page 10: ...l Rights Reserved February 2016 Part No 729 110 042 v1 03 2 Features 1 CHUCK NUT 2 TRIGGER 3 CONTROL CABLE 4 WELD CABLE 5 GUN BODY 2 HALVES 6 FOOT ASSEMBLY 7 BELLOWS 8 SPRING ADJUSTMENT COLLAR 9 MAIN...

Page 11: ...pin assembly for the proper stud length 3 1 2 Adjusting Chuck and Stop Assembly The unit should be switched off before inserting or changing a chuck To adjust the Chuck and Stop Assembly Figure 3 1 Ch...

Page 12: ...located in the center of the spark shield To install the foot unscrew the leg screws and place them through the holes in the foot Reattach the leg screws to the legs Maintain concentricity between th...

Page 13: ...ded screwdriver or NCD Set Up Tool 525 001 200 turn the travel adjustment screw on the back of the weld gun counter clockwise until it stops 4 Loosen leg screws 5 Insert stud in chuck 6 Adjust foot so...

Page 14: ...Set Up Tool 525 001 200 turn travel adjustment screw on the back of the weld gun counter clockwise until it stops 4 Loosen leg screws 5 Insert stud in chuck 6 Adjust foot so that the stud stick out ma...

Page 15: ...o weld in contact mode In order to make this change follow these steps 1 Loosen set screws 5 2 places 2 Remove the foot and leg assembly and bellows 3 Remove the chuck nut and chuck 4 Unscrew part 41...

Page 16: ...ng pressure and gap lift using a stud per section 3 3 1 4 Adjust voltage 5 Replace the set up stud with a new one 6 Begin production welding after sample welds have been validated for strength and app...

Page 17: ...ding Cable Control Cable When checking cables for continuity it is important to slightly pull on all the connectors so that if there is a break the wires will be pulled apart The continuity check can...

Page 18: ...Torque Test Stud shall be torqued until a pre specified loading is attained or until the stud fails On thin plate a plug of the base material should tear out Physical test procedures for inspecting m...

Page 19: ...e faster drop time and the faster drop time extinguishes the arc sooner Increasing spring pressure Speeding up the weld time and extinguishes the arc sooner Decreasing voltage Reducing the voltage red...

Page 20: ...plunge Refer to Sections 3 3 and 8 4 Varying gauges of sheet metal Changes in sheet metal can usually be compensated for by changing the settings on the power supply Springs inside weld tool have fat...

Page 21: ...ZINC 8 524 005 101 2 SCREW M5X16 FHSC ZINC 9 524 005 103 1 SCREW M3X5 LHS DIN7984 10 524 005 104 1 NUT M5 THICK 11 524 005 105 1 SCREW M5X10 SHC DIN912 12 526 001 233 1 SPRING COMPRESSION 13 526 001 2...

Page 22: ...4 751 650 204 1 COIL HOLDER 35 751 650 209 1 WASHER RESIDUAL 36 751 650 210 1 WASHER SPRING 37 751 650 211 1 SWITCH TRIGGER ASM 38 751 650 216 1 COIL ASM 39 751 650 241 1 SCREW CD FL SPRING ADJUSTING...

Page 23: ...2016 Nelson Stud Welding Inc Page 23 All Rights Reserved February 2016 Part No 729 110 042 v1 03 7 2 Exploded Drawing...

Page 24: ...he front cap 2 and rear cap 1 2 Remove the caps and lay the gun on its right side 3 Remove 3 screws that hold the gun halves together 4 Separate and remove the left gun body such that the internal com...

Page 25: ...2016 Nelson Stud Welding Inc Page 25 All Rights Reserved February 2016 Part No 729 110 042 v1 03 8 Schematics 8 1 NCD CTRL TO GUN 12 PIN Auto Gap...

Page 26: ...pless Screw Adjustment Front Ends Adjustable Tripod Spark Shield Max Stud Length Depends on Accessories Dimensions without Cable 7 1 4 x 1 1 2 x 5 1 2 184 mm x 38 mm x 140 mm Weight without Cable 2 2...

Page 27: ...2 0 236 6 mm 500 001 390 0 125 5 Thd 1 8 500 001 359 0 250 1 4 500 001 356 0 134 0 138 10 Ga 6 Thd 500 001 360 0 312 0 315 5 16 8 mm 500 001 361 0 157 4 mm 500 001 369 0 375 3 8 500 001 357 0 164 8 Th...

Page 28: ...Spring Pressure Capacitance M3 6 Carbon Steel 12 3 120 15lbs 54K Stainless Steel 12 3 100 15lbs 54K M4 8 Carbon Steel 12 3 120 7lbs 54K Stainless Steel 12 3 120 15lbs 54K M5 10 Carbon Steel 12 3 130 1...

Page 29: ...635 9353 Fax 909 468 2112 Subsidiaries International England Nelson U K Ltd 47 49 Edison Rd Rabans Lane Ind l Estate Aylesbury HP19 8TE UK Phone 44 1296 433500 Fax 44 1296 487930 Middle East Asia Paci...

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