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OM-174 470 Page 12

Parts For Main Assembly

NOTE: All items indented by a dot(s) are included with the item listed directly above.

Description

Part

No.

Item

No.

Part

No.

Item

No.

Description

Part

No.

Item

No.

Description

1

149 332

Hose Clamp

2

147 635

Hose

131 315

Drive Assembly

3

151 828

· Cotter Hair Pin

4

112 031

· Pressure Lever

5

090 443

· Bearing

111 622

· · Spacer

6

 154 827

· Drive Roll

7

602 169

· Set Screw

8

092 237

· Knob

9

090 415

· Spring

10

085 244

· Cupped Washer

11

085 242

· Fastener

12

010 224

· Spring Pin

13

058 549

· Wire Guide

14

129 893

· Insulator

15

173 446

· Drive Motor

16

090 416

· Hinge Pin

17

124 817

· Drive Housing

18

153 727

Baffle

19

111 929

Hub

135 615

Bushing, .390 ID x .750 OD

20

010 910

Washer

21

073 355

Spring

22

010 909

Nut

23

111 998

Cotter Hair Pin

24

134 201

Stand-Off Support

25

119 539

Circuit Card

26

*073 426

· Fuse, slo-blo 5A

118 936

Housing, 10 pin

079 747

Terminal

27

006 393

Relay

28

111 931

Fan Motor

29

 005 656

Fan Blade

30

153 729

Handle

154 596

Cap, Handle

31

+153 724

Wrapper

32

134 464

Warning Label

33

089 899

Latch

34

120 675

Bracket

35

129 696

Contactor

36

119 264

Rectifier

37

010 047

Tubing

38

122 385

Terminal Assembly

174 504

· Link

39

Case w/Cmpts

116 996

· Gas Valve

605 227

· Nyl Nut, gas valve

147 545

· Cord Set

111 443

· Bushing, cord set

000 101

· Rheostat

097 922

· Knob

111 997

· Rocker Switch, SPST

111 897

· Rotary Switch

127 023

· · Knob

155 530

· Case

182 488

· Nameplate

111 644

· Bushing, .875mtg

025 338

· Bushing, .625mtg

40

153 722

Side Panel

41

125 552

Thermostat, NC

42

147 676

Transformer

43

181 649

Resistor

44

090 288

Varistor

45

162 264

Capacitor

46

022 160

Clamp

47

118 457

Stabilizer

48

019 663

Foot

49

600 325

Cable

50

153 969

Clamp

51

110 740

GA-16 Gun,
(Fig 6-2)

173 374

Regulator/Flowmeter

183 581

Hose, gas

52

048 282

Connector

183 312

Adapter ring, wire spool

*Recommended Spare Parts.

+When ordering a component originally dis-
playing a precautionary label, the label should
also be ordered.

Be sure to provide Model and Serial Number
when ordering replacement parts.

1

110 793

Handle Assembly, black

2

110 795

Head Tube

3

110 780

· Nut

4

110 779

· Jacket

5

110 781

· Stop

6

128 878

· Adapter

7

118 571

· Spring

8

110 785

Contact Tip, .023

8

110 786

Contact Tip, .030

8

110 787

Contact Tip, .035

9

110 789

Nozzle, 1/2 orf

9

112 420

Nozzle, 3/8 orf

9

110 790

Nozzle, flat spot

10

110 794

Trigger Switch Assembly

11

080 565

Terminal

12

110 792

Cable/Conduit

13

110 797

Sleeve

14

167 440

Liner, .023-.035

15

110 784

· Collet, .035

16

079 974

O-Ring, .500

17

110 796

Connector

18

079 878

Connector & Pins

19

048 834

Connector

OPTIONAL

Part

No.

Item

No.

Description

ST-110 832-D

1

3

4

5

6

7

8

9

10

1

11

1

12

13

14

15

16

17

18

19

2

2

Figure 6-2. GA-16 Gun (Fig 6-1 Item 52)

Содержание Gold Seal 420

Страница 1: ... to the operator For help call your distributor or MILLER ELECTRIC Mfg Co P O Box 1079 Appleton WI 54912 414 734 9821 OWNER S MANUAL October 1997 Form OM 174 470B Effective With Serial No KH531011 Gold Seal Model 420 CV DC Welding Power Source Wire Feeder For FCAW And GMAW Welding 90 Amperes 18 Volts At 20 Duty Cycle Uses 115 Volts AC Single Phase Input Power Overheating Short Circuit And Motor Ov...

Страница 2: ......

Страница 3: ...s around your body 9 Ground the workpiece to a good electrical earth ground 10 Do not touch electrode while in contact with the work ground circuit 11 Use only well maintained equipment Repair or replace damaged parts at once 12 Wear a safety harness to prevent falling if working above floor level 13 Keep all panels and covers securely in place ARC RAYS can burn eyes and skin NOISE can damage hear...

Страница 4: ...ding electrode to touch any cylinder 5 Use only correct shielding gas cylinders regulators hoses and fittings designed for the specific application maintain them and associated parts in good condition 6 Turn face away from valve outlet when opening cylinder valve 7 Keep protective cap in place over valve except when cylinder is in use or connected for use 8 Read and follow instructions on compress...

Страница 5: ... 36 kg Welding Gun Rated Output Air Cooled 160 Amperes At 60 Duty Cycle Using CO2 Shielding Gas Cable Length 10 ft 3 m 1 1 Volt Ampere Curve And Duty Cycle Chart CAUTION USING GUN BEYOND DUTY CYCLE RATING can damage gun Do not use gun beyond rated amperage when using CO2 shielding gas Use gun at 30 duty cycle when using mixed shielding gas wfwarn8 1 10 91 ssb1 1 10 91 SB 124 646 A sb1 3 10 91 SB 1...

Страница 6: ...ll Shut off shielding gas supply when not in use warn4 1 9 91 Tools Needed 1 1 8 5 8 in 7 8 3 1 2 1 2 3 OR 5 4 6 Argon Gas Or Mixed Gases Chain gas cylinder to running gear wall or other stationary support so cylinder cannot fall and break off valve 1 Cap 2 Cylinder Valve 3 Cylinder 4 Regulator Flowmeter 5 Gas Hose Connection Fitting has 5 8 18 right hand threads 6 Flow Adjust Typical flow rate is...

Страница 7: ...r Label 2 Polarity Jumper Links Always read and follow welding wire manufacturer s recommended polarity Close door Ref ST 155 506 A Tools Needed 3 8 in STRAIGHT POLARITY DCEN REVERSE POLARITY DCEP GUN POLARITY CHANGEOVER For Flux Cored Wires FCAW Process For Solid Steel Or Wires GMAW S 116 599 Aluminum Process 1 2 Figure 2 3 Gun Polarity Connections 2 5 Installing Welding Gun 1 Gun Securing Nut 2 ...

Страница 8: ...nd and turn while using a wrench to adjust nut When a slight force is needed to turn spool tension is set Loosen wire from spool cut off bent wire and pull 6 in 150 mm of wire from spool 3 Pressure Adjustment Open pressure assembly 4 Wire Inlet Guide 5 Drive Roll 6 Wire Outlet Guide Thread wire through inlet guide along drive roll groove and into outlet guide Close pressure assembly Lay gun cable ...

Страница 9: ...th a correct shade of filter see ANSI Z49 1 sb3 1 10 91 1 2 3 Figure 3 1 Safety Equipment 1 Power Switch Use switch to turn unit On and Off 2 Wire Speed Control Use control to select a wire feed speed As Voltage switch setting increases wire speed range also increases The numbers around the control are not a wire feed speed see last page of Parts List 3 Voltage Switch Use switch to select an arc v...

Страница 10: ...nd tighten connections Replace unreadable labels Every 6 months Blow out or vacuum inside of unit 4 1 Overload Protection READ SAFETY BLOCKS at start of Section 4 before proceeding WARNING A Overheating Thermostat TP1 protects the unit from damage due to overheating If main transformer gets too hot TP1 opens and weld output stops but fans keep running to cool transformer Wait several minutes befor...

Страница 11: ...crew 7 Bearing Remove bearing as shown Install new bearing and secure with screw Reinstall arm onto pin and secure with cotter pin 8 Setscrew 9 Smooth Groove For Hard Wire 10 Drive Roll Remove drive roll as shown Use a wire brush to clean drive roll Push drive roll onto shaft with desired groove in Turn drive roll so one setscrew faces flat side of shaft and tighten both setscrews 11 Knurled Groov...

Страница 12: ...rive roll Remove gun and cut liner off Reinstall gun so that liner is as close as possible to drive rolls without touching Thread welding wire see Section 2 6 Close door Ref ST 155 506 A ST 155 509 A Tools Needed 3 8 5 16 in 2 1 3 4 5 7 7 6 6 Figure 4 3 Gun Maintenance 4 4 Troubleshooting READ SAFETY BLOCKS at start of Section 4 before proceeding WARNING Welding Trouble Remedy Section No weld outp...

Страница 13: ...wire inlet guide or liner if dirty or plugged 4 2 4 3 Replace drive roll or pressure bearing if worn or slipping 4 2 Secure gun trigger leads or repair leads or replace trigger switch 2 5 Check and replace F1 4 1B Check and clear any restrictions at drive assembly and liner 4 2 4 3 Have nearest Factory Authorized Service Station Service Distribu tor check drive motor SECTION 5 ELECTRICAL DIAGRAM S...

Страница 14: ...OM 174 470 Page 10 NOTES ...

Страница 15: ... 11 SECTION 6 PARTS LIST 16 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 18 19 20 21 22 23 24 25 26 27 28 29 31 32 33 30 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 Fig 6 2 52 ST 155 532 A Figure 6 1 Main Assembly ...

Страница 16: ...Cord Set 111 443 Bushing cord set 000 101 Rheostat 097 922 Knob 111 997 Rocker Switch SPST 111 897 Rotary Switch 127 023 Knob 155 530 Case 182 488 Nameplate 111 644 Bushing 875mtg 025 338 Bushing 625mtg 40 153 722 Side Panel 41 125 552 Thermostat NC 42 147 676 Transformer 43 181 649 Resistor 44 090 288 Varistor 45 162 264 Capacitor 46 022 160 Clamp 47 118 457 Stabilizer 48 019 663 Foot 49 600 325 ...

Страница 17: ... Type ER70S 6 Mild Steel 75 Argon 25 CO2 20 cfh ER 308 Stainless Steel Tri Mix 20 cfh Aluminum Argon 30 cfh Voltage Wire Speed Voltage Wire Speed Voltage Wire Speed Voltage Wire Speed Voltage Wire Speed Voltage Wire Speed Voltage Wire Speed Do not change VOLTAGE switch position while welding WIRE SPEED value in table is a starting value only and WIRE SPEED control setting can be fine tuned during ...

Страница 18: ......

Страница 19: ... by Miller but manufactured by others such as engines or trade accessories These items are covered by the manufacturer s warranty if any 2 Consumable components such as contact tips cutting nozzles contactors brushes slip rings relays or parts that fail due to normal wear 3 Equipment that has been modified by any party other than Miller or equipment that has been improperly installed improperly op...

Страница 20: ......

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