Instruction/ maintenance manual of the product CV-2 Miller Electric
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cover 6/93 – ST-1 1 1 216-A PRINTED IN USA Read and follow these instructions and all safety blocks carefully . Have only trained and qualified persons install, operate, or service this unit. Call your distributor if you do not understand the directions.
Miller Electric manufactures a full line of welders and welding related equipment. For information on other quality Miller products, contact your local Miller distributor to receive the latest full line catalog or individual catalog sheets. T o locate your near est distributor or service agency call 1-800-4-A-Miller , or visit us at www .
OM-880B – 7/93 T ABLE OF CONTENTS Section No. Page No. SECTION 1 – SAFETY PRECAUTIONS AND SIGNAL WORDS 1-1. General Information And Safety 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2. Safety Alert Symbol And Signal Words 1 .
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OM-880 Page 1 SECTION 1 – SAFETY PRECAUTIONS AND SIGNAL WORDS 1-1. GENERAL INFORMA TION AND SAFETY A. General Information presented in this manual and on various la- bels, tags, and plates on the un.
OM-880 Page 2 Chart 2-1. DC V olt-Ampere Curves (CV Mode) A. BIG 30 DIESEL And BIG 30A DIESEL Models B. BIG 40 DIESEL And BIG 40G Models C. BIG 50 DIESEL Models SB-1 1 1 680-B SB-1 1 1 679-A SB-1 1 1 678-A Chart 2-2. AC V olt-Ampere Curves (Single-Phase, CC Mode) A.
OM-880 Page 3 2-1. VOL T -AMPERE CUR VES (Charts 2-1 And 2-2) The volt-ampere curves show the output voltage and amperage of the welding generator available at any point from the minimum to maximum of each coarse am- perage range.
OM-880 Page 4 ST-145 421 T ransformer T2 Installed Onto Base Mounting Strip Right Front Cover Of Unit BIG 30 DIESEL And BIG 30A DIESEL T ransformer T2 Installation Figure 3-1. Location For T ransformer T2 Installation B. T ransformer And Lower Panel Installation 1.
OM-880 Page 5 SB-1 12 688-A Left Front Upright When Viewed From Front Of Control Panel Electrode (Negative) W eld Out p u t T erminal W eld Output T erminal Assembly W ork (Positive) W eld Output T er.
OM-880 Page 6 Rectifier SR3: Connect CV -2 Leads 17 And 27 With Existing Leads On SR3 FRONT BIG 30 DIESEL And BIG 30A DIESEL Rectifier SR3 Range Switch S3: Connect CV -2 Leads 17 And 27 With Existing Leads On SR3 FRONT BIG 40 DIESEL, BIG 40G, And BIG 50 DIESEL Rear View Of Range Switch ST-145 422 / ST -145 423 Figure 3-3.
OM-880 Page 7 18. Disconnect leads 623 and 625 at insulated fric- tion terminals, and connect these leads to the matching leads from the CV -2 panel (see Figure 3-4). 19. Connect lead 632 from Current Regulator box to lead 632 from CV -2 panel (see Figure 3-4).
OM-880 Page 8 SB-1 12 332-A LEFT FRONT W elding Generator Frame Big 40 Diesel, Big 40G, And Big 50 Diesel T ransformer Mounting Bracket T ransformer T2 RIGHT Use Switch Guard As T emplate T o Mark Hole Locations Switch Guard (Angle Bracket) Install Switch Guard Onto Lower Front Portion Of Base Just Below New Lower Front Panel Figure 3-5.
OM-880 Page 9 th e welding power source. T o connect the Remote Con- tactor and/or Amperage or V oltage Control to the RE- MOTE-5 receptacle, align keyway , insert plug from the Remote Control, and rotate threaded collar fully clock- wise. E AD BC S-0005 Figure 3-6.
OM-880 Page 10 SA-1 12 730 W elding Generator Connection T o CV -2 5-Socket Amphenol Receptacle RC3 W ork Electrode Holder Optional Remote Contactor And Amperage Control Figure 3-8.
OM-880 Page 1 1 SA-1 12 734 W elding Generator Gas Supply With Flowmeter And Regulator Gas Hose Electrode Cable Connection T o CV -2 14-Socket Amphenol Receptacle RC4 - Use W ork 14-Pin T o 14-Pin Interconnecting Cord Wire Drive Assembly W elding Gun Porta-Mig Model Wire Feeder Figure 3-1 1.
OM-880 Page 12 SA-1 12 734 W elding Generator Gas Supply With Flowmeter And Regulator Gas Hose Electrode Cable Connection T o CV -2 14-Socket Amphenol Receptacle RC4 - Use W ork 14-Pin T o 14-Pin Interconnecting Cord Wire Drive Assembly W elding Gun 50 Series Wire Feeder Figure 3-14.
OM-880 Page 13 SECTION 4 – OPERA TOR CONTROLS SC-1 1 1 216-A Circuit Breaker CB5 Remote-14 Receptacle RC4 Circuit Breaker CB6 Output/Contactor Switch S10 Current Control Switch S1 1 Constant V oltag.
OM-880 Page 14 When a Remote Current or V oltage Control is being used, the remote control functions as a fine amperage or voltage adjustment for the AMPERAGE & VOL T AGE adjustment control setting of the welding generator .
OM-880 Page 15 SECTION 5 – SEQUENCE OF OPERA TION W ARNING: ELECTRIC SHOCK can kill; MOVING P ARTS can cause serious injury; IMPROPER AIRFLOW AND EXPOSURE TO ENVIRONMENT can damage internal parts. • Do not touch live electrical parts. • Stop engine, and disconnect negative ( – ) battery cable from battery before inspecting or servicing.
OM-880 Page 16 10. If remote contactor control is not used, place the CV -2 OUTPUT/CONT ACTOR switch in the ON position. If remote contactor control is to be used, place the OUTPUT/CONT ACTOR switch in the REMOTE position (see Section 4-3).
OM-880 Page 17 5. If high frequency is desired, install and connect the high frequency unit according the the equip- ment Owner ’ s Manual. 6. Select and obtain proper tungsten electrode (see T able 6-2). 7. Prepare tungsten electrode according to Section 6-4, and insert into torch.
OM-880 Page 18 SECTION 6 – MAINTENANCE & TROUBLESHOOTING 6-1. ROUTINE MAINTENANCE IMPORTANT : Every six months inspect the labels on this unit for legibility . All precautionary labels must be maintained in a clearly readable state and replaced when necessary .
OM-880 Page 19 SC-1 12 013-A V oltage Control Board PC4 Wiring Harness Plug Standoff Support (4) Contactor Control Board PC3 Wiring Harness Plug Standoff Support (3) Figure 6-1. Circuit Board Locations And Components CAUTION: ELECTROST A TIC DISCHARGE (ESD) can damage circuit boards.
OM-880 Page 20 T able 6-2. T ungsten Electrode Size Electrode Diameter Pure T ungsten .010 ” .020 ” .040 ” 1/16 ” 3/32 ” 1/8 ” 5/32 ” 3/16 ” 1/4 ” 2% Thorium Alloyed T ungsten .010 ” .020 ” .040 ” 1/16 ” 3/32 ” 1/8 ” 5/32 ” 3/16 ” 1/4 ” Zirconium Alloyed T ungsten .
OM-880 Page 21 Stable Arc Straight Ground Flat (The Dia. Of This Flat Governs Amperage Capacity) Arc W ander Point Radial Ground TUNGSTEN PREP ARA TION: IDEAL TUNGSTEN PREP ARA TION: WRONG S-0162 Figure 6-3. T ungsten Preparation Shape tungsten electrodes on a fine grit, hard abrasive wheel used only for tungsten shaping.
OM-880 Page 22 T able 6-3. T roubleshooting TROUBLE PROBABLE REMEDY Wire feeder inoperative. Circuit breaker CB5 or CB6 open. Reset CB5 or CB6 according to Section 6-2. No remote control of con- OUTPUT/CONTACTOR switch S10 Place S10 in the REMOTE position tactor; open-circuit voltage in the ON position.
OM-880 Page 23 SECTION 7 – ELECTRICAL DIAGRAM Circuit Diagram No. SB-1 10 336-B Diagram 7-1. Circuit Diagram For CV -2 Ref. D-1 1 1 326-N Diagram 7-2.
OM-880 Page 24 SECTION 8 – P ARTS LIST.
OM-880 Page 25 SD-1 1 1 208-B 1 2 34 5 6 7 8 7 9 10 11 12 13 14 15 16 17 18 19 Figure 8-1. Main Assembly.
OM-880 Page 26 Description Quantity Part No. Dia. Mkgs. Figure 8-1. Main Assembly Item No. 1 S1 1 12 003 SWITCH, polarity 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 +1 10 641 P ANEL, front - lower 1 .
Warranty Questions? Call 1-800-4-A-MILLER for your local Miller distributor. miller_warr 7/00 Y our distributor also gives you ... Service Y ou always get the fast, reliable response you need. Most replacement parts can be in your hands in 24 hours. Support Need fast answers to the tough welding questions? Contact your distributor .
PRINTED IN USA 2000 Miller Electric Mfg. Co. 6/00 Miller Elect ric Mfg. Co. An I l li noi s T ool Works Company 1635 West Spenc er St reet Applet on, W I 54914 US A International He adquarters –.
An important point after buying a device Miller Electric CV-2 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Miller Electric CV-2 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Miller Electric CV-2 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Miller Electric CV-2 you will learn all the available features of the product, as well as information on its operation. The information that you get Miller Electric CV-2 will certainly help you make a decision on the purchase.
If you already are a holder of Miller Electric CV-2, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Miller Electric CV-2.
However, one of the most important roles played by the user manual is to help in solving problems with Miller Electric CV-2. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Miller Electric CV-2 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
