English dropdown-ico

AUTO ARC 255 manual

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

Go to page of

Similar user manuals

A good user manual

The rules should oblige the seller to give the purchaser an operating instrucion of AUTO ARC 255, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.

What is an instruction?

The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of AUTO ARC 255 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.

Unfortunately, only a few customers devote their time to read an instruction of AUTO ARC 255. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.

What should a perfect user manual contain?

First and foremost, an user manual of AUTO ARC 255 should contain:
- informations concerning technical data of AUTO ARC 255
- name of the manufacturer and a year of construction of the AUTO ARC 255 item
- rules of operation, control and maintenance of the AUTO ARC 255 item
- safety signs and mark certificates which confirm compatibility with appropriate standards

Why don't we read the manuals?

Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of AUTO ARC 255 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of AUTO ARC 255, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the AUTO ARC service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of AUTO ARC 255.

Why one should read the manuals?

It is mostly in the manuals where we will find the details concerning construction and possibility of the AUTO ARC 255 item, and its use of respective accessory, as well as information concerning all the functions and facilities.

After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.

Table of contents for the manual

  • Page 1

    Auto Arc 255 And M-25 Gun Processes Description R MIG (GMA W) W elding Flux Cored (FCA W) W elding Arc Welding Power Source And Wire Feeder OM-157 066V November 2000  For W arranty Claims And T echnical Support, Contact: Milweld Inc., National Distributor P .O. Box 338, Hortonville, WI 54944-0338 T el 920-779-0916 Fax 920-779-0924[...]

  • Page 2

    [...]

  • Page 3

    The following terms are used interchangeably throughout this manual: MIG = GMAW T ABLE OF CONTENTS SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1. Symbol Usage 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

  • Page 4

    [...]

  • Page 5

    OM-157 066 Page 1 SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING som _nd_4/98 1-1. Symbol Usage Means W arning! W atch Out! There are possible hazards with this procedure! The possible hazards are shown in the adjoining symbols. Y Marks a special safety message. . Means “Note”; not safety related. This group of symbols means W arning! W a[...]

  • Page 6

    OM-157 066 Page 2 Arc rays from the welding process produce intense visible and invisible (ultraviolet and infrared) rays that can burn eyes and skin. Sparks fly off from the weld. ARC RA YS can burn eyes and skin. D Wear a welding helmet fitted with a proper shade of filter to protect your face and eyes when welding or watching (see ANSI Z49.1 and[...]

  • Page 7

    OM-157 066 Page 3 1-3. Additional Symbols For Installation, Operation, And Maintenance FIRE OR EXPLOSION hazard. D Do not install or place unit on, over , or near combustible surfaces. D Do not install unit near flammables. D Do not overload building wiring – be sure power supply system is properly sized, rated, and protected to handle this unit.[...]

  • Page 8

    OM-157 066 Page 4 1-5. EMF Information Considerations About W elding And The Effects Of Low Frequency Electric A n d M a g netic Fields W elding current, as it flows through welding cables, will cause electro- magnetic fields. There has been and still is some concern about such fields. However , after examining more than 500 studies spanning 17 yea[...]

  • Page 9

    OM-157 066 Page 5 SECTION 2 – INST ALLA TION 2-1. Specifications Rated W elding Amperage Range Maximum Open- Amperes Input at Rated Load Output, 50 or 60 Hz, Single-Phase Output DC Circuit V oltage DC 200 V 230 V 460 V 575 V KV A KW 200 A @ 28 V o lts DC, 60% Duty Cycle 250 A @ 28 V olts DC, 40% Duty Cycle 40 – 250 42 46 1.1* 40 1.3* 20 0.5* 16[...]

  • Page 10

    OM-157 066 Page 6 6 Minutes W elding 4 Minutes Resting 2-3. W elding Power Source Duty Cycle And Overheating Duty Cycle is percentage of 10 minutes that unit can weld at rated load without overheating. If unit overheats, thermostat(s) opens, output stops, and cooling fan runs. Wait fifteen minutes for unit to cool. Reduce amperage or voltage, or du[...]

  • Page 11

    OM-157 066 Page 7 2-5. Installing Work Clamp 1 W ork Cable 2 Boot Slide boot onto work cable. Route cable out front panel opening from inside. 3 Negative ( – ) Output T erminal Connect cable to terminal and cover connection with boot. 4 Hardware 5 W ork Clamp Route cable through clamp handle and secure as shown. Close door . ST-800 918-C 1/2, 3/4[...]

  • Page 12

    OM-157 066 Page 8 2-7. Installing Welding Gun Ref. ST-800 921-C 1 Drive Assembly 2 Gun Securing Knob 3 Gun End Loosen securing knob. Insert gun en d through opening until it bottoms against drive assembly . T ighten nut. 4 Gun Trigger Plug Insert plug into receptacle, and tighten threaded collar . Close door . 1 24 3 2-8. Installing Wire Spool And [...]

  • Page 13

    OM-157 066 Page 9 2-9. Setting Gun Polarity 1 Polarity Changeover Label Always read and follow manufac- ture ’ s recommended polarity . 3/4, 1 1/16 in T ools Needed: 1 Ref. 190 821-A 2-10. Positioning Jumper Links Ref. ST-800 922-C Check input voltage available at site. 1 Jumper Links Access Door Open door . 2 Jumper Link Label 3 Jumper Links Loc[...]

  • Page 14

    OM-157 066 Page 10 2-1 1. Electrical Service Guide Input V oltage 200 230 460 575 Input Amperes At Rated Output 46 40 20 16 Max Recommended Standard Fuse Or Circuit Breaker Rating In Amperes Circuit Breaker 1 , T ime-Delay Fuse 2 50 50 25 20 Normal Operating Fuse 3 70 60 30 25 Min Input Conductor Size In A WG/Kcmil 10 10 14 14 Max Recommended Input[...]

  • Page 15

    OM-157 066 Page 1 1 2-13. Threading Welding Wire 1 Wire Spool 2 Welding Wire 3 Inlet Wire Guide 4 Pressure Adjustment Knob 5 Drive Roll 6 Outlet Wire Guide 7 Gun Conduit Cable Lay gun cable out straight. 4 7 1 Ref. ST-148 261-D / ST -159 218-C / ST-801 083 / S-0627-A 6 in (150 mm) 4 in (102 mm) WOOD Open pressure assembly . Pull and hold wire; cut [...]

  • Page 16

    OM-157 066 Page 12 SECTION 3 – OPERA TION 3-1. Front Panel Controls Ref. ST-171 639-C / Ref. ST -174 843-A Controls For Standard Units 1 Wire Speed Control The scale around the control is percent, not wire feed speed. 2 V oltage Switch Use control and V oltage Range Selector (see Section 3-2) to set arc voltage. Step 6 of Low range and Step 1 of [...]

  • Page 17

    OM-157 066 Page 13 3-2. Center Baffle Controls Ref. ST-800 919-B / S-171 601 1 Wire Mode Switch Fo r better control of wire speed use th e Low position when wire speed is between 90 and 670 ipm. Use the Full position when wire speed is between 150 ipm and 1030 ipm. 2 V oltage Range Selector Place switch in desired position. 1 2 DO NOT SWITCH UNDER [...]

  • Page 18

    OM-157 066 Page 14 3-3. W eld Parameter Chart[...]

  • Page 19

    OM-157 066 Page 15 Ref. 200 062[...]

  • Page 20

    OM-157 066 Page 16 SECTION 4 – MAINTENANCE & TROUBLESHOOTING 4-1. Routine Maintenance Y Disconnect power before maintaining. . Maintain more often during severe conditions. 3 Months Replace Damaged Or Unreadable Labels Clean And T ighten W eld T erminals Repair Or Replace Cracked Cables And Cords 6 Months Blow Out Or V acuum Inside Remove dri[...]

  • Page 21

    OM-157 066 Page 17 4-3. Fuses F1 And F2 Ref. ST-800 928-B Y T ur n Off unit, and disconnect input power . 1 Fuse F1 (See Parts List For Rating) F1 protects the 1 15 volts ac winding of transformer T1. If F1 opens, all weld output stops and pilot light PL1 goes out. 2 Fuse F2 (See Parts List For Rating) F2 protects the 24 volts ac winding of transfo[...]

  • Page 22

    OM-157 066 Page 18 4-6. Cleaning Or Replacing Gun Liner Ref. ST-800 797-C 3/8 i n T o Reassemble Gun: Insert new liner . Install and tighten wire outlet guide. Cut liner off 3/4 in (20 mm) (3/8 in [9.5 mm] for aluminum) from head tube. Install adapter , contact tip, and nozzle. Lay gun cable out straight before installing new liner . Head tube 3/8 [...]

  • Page 23

    OM-157 066 Page 19 4-7. Replacing Switch And/Or Head T ube Ref. ST-800 795-C 1 Remove handle locking nut. 2 Remove switch housing. Note : If installing new switch, push switch lead connectors onto terminal of new switch (polarity is not important). Install switch back into handle, and secure with handle locking nut. If replacing head tube, continue[...]

  • Page 24

    OM-157 066 Page 20 4-8. T roubleshooting W elding T rouble Remedy No weld output; wire does not feed. Secure power cord plug in receptacle (see Section 2-12). Reset circuit breaker CB1 (see Section 4-2). Replace fuse F1 and/or F2 (see Section 4-3). Replace building line fuse or reset circuit breaker if open (see Section 2-12). Secure gun trigger pl[...]

  • Page 25

    OM-157 066 Page 21 SECTION 5 – ELECTRICAL DIAGRAM SB-173 544-E Figure 5-1. Circuit Diagram For Welding Power Source[...]

  • Page 26

    OM-157 066 Page 22 Notes[...]

  • Page 27

    OM-157 066 Page 23 SECTION 6 – P ARTS LIST 1 Figure 6-2 – 2 3 5 6 8 9 10 11 12 13 14 16 15 17 18 Figure 6-6 - 20 ST-800 930-D . Hardware is common and not available unless listed. Figure 6-4 – 7 Figure 6-5 – 19 Figure 6-1. Main Assembly Description Part No. Dia. Mkgs. Item No. Figure 6-1. Main Assembly Quantity 1 146 168 P ANEL, center encl[...]

  • Page 28

    OM-157 066 Page 24 Description Part No. Dia. Mkgs. Item No. Figure 6-1. Main Assembly Quantity 8 146 165 P ANEL, side LH 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 089 899 LA TCH, slide flush mtg hole 2 . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

  • Page 29

    OM-157 066 Page 25 ST-800 931-D . Hardware is common and not available unless listed. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 18 17 20 21 22 23 25 26 27 28 (Fig. 6 – 3) 29 30 31 24 19 Figure 6-2. Baffle, Center w/Components[...]

  • Page 30

    OM-157 066 Page 26 Description Part No. Dia. Mkgs. Item No. Figure 6-2. Baffle, Center w/Components (Fig 6-1 Item 2) Quantity 1 058 427 RING, retaining spool 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 085 980 NUT , stl hex full .625-1 1 1 . . . . . . . . . . . . . [...]

  • Page 31

    OM-157 066 Page 27 See T able 6-1 Drive Roll & Wire Guide Kits. 148 529-H . Hardware is common and not available unless listed. Figure 6-3. Wire Drive And Gears T able 6-1. Drive Roll And Wire Guide Kits IMPORT ANT : Base selection of drive rolls upon the following recommended usages: 1. V -Grooved rolls for hard wire. 2. U- Grooved rolls for s[...]

  • Page 32

    OM-157 066 Page 28 Description Dia. Mkgs. Item No. Figure 6-3. Wire Drive And Gears (Fig 6-2 Item 28) Quantity Part No. 1 602 009 SCREW, .250-20 x 1.25 soc hd gr 8 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 172 075 CARRIER, drive roll w/components 1 . . . . . . . . . . . . . . . . . . . .[...]

  • Page 33

    OM-157 066 Page 29 ST-802 288 . Hardware is common and not available unless listed. 1 2 3 6 7 8 9 10 11 12 13 14 15 16 17 18 5 4 Figure 6-4. Panel, Rear w/Components Description Dia. Mkgs. Item No. Figure 6-4. Panel, Rear w/Components (Fig 6-1 Item 7) Quantity Part No. 1 1 16 996 V AL VE, 1 15 V AC 2way 1 . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 34

    OM-157 066 Page 30 ST-802 287 . Hardware is common and not available unless listed. 1 2 4 5 6 7 8 9 10 11 12 13 14 15 3 Figure 6-5. Panel, Front w/Components Description Part No. Dia. Mkgs. Item No. Figure 6-5. Panel, Front w/Components (Fig 6-1 Item 19) Quantity 1 148 956 HANDLE, switch 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 35

    OM-157 066 Page 31 Ref. 800 792-B 1 234 56 7 8 9 10 14 17 11 12 11 12 13 9 15 16 Figure 6-6. Exploded View Of Gun[...]

  • Page 36

    OM-157 066 Page 32 Quantity Description Part No. Item No. Figure 6-6. Exploded View Of Gun (Fig 1 Item 20) 1 200 258 NOZZLE, slip type .500 orf flush 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 ♦ 169 724 NOZZLE, slip type .500 orf .125 recess . . . . . . . . 1 ♦ 169 725 NOZZLE, s[...]

  • Page 37

    Notes[...]

  • Page 38

    Notes[...]

  • Page 39

    Effective January 1, 2000 (Equipment with a serial number preface of “ LA ” or newer) This limited warranty supersedes all previous manufacturers warranties and is exclusive with no other guarantees or warranties expressed or implied. LIMITED W ARRANTY – Subject to the terms and conditions below , warrants to its original retail purchaser tha[...]

  • Page 40

    PRINTED IN USA 1/00 Model Name Serial/Style Number Purchase Date (Date which equipment was delivered to original customer.) Distributor Address City State Zip Please complete and retain with your personal records. Always provide Model Name and Serial/Style Number. Contact your Distributor for: Welding Supplies and Consumables Options and Accessorie[...]