Instruction/ maintenance manual of the product OM-225A Miller Electric
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Processes Description Air Plasma Cutting and Gouging Air Plasma Cutter OM-225A February 1998 Eff. w/Serial Number KG155768 Spectrum 650 Cut F orc e R Visit our website at www.
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 nearest distributor or service agency call 1-800-4-A-Miller , or visit us at www .
OM-225 Page 1 SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING pom _nd_5/97 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.
OM-225 Page 2 Sparks and hot metal blow out from the cutting arc. Chipping and grinding cause flying metal. FL YING SP ARKS can cause injury . D W ear approved face shield or safety goggles with side shields. D W ear proper body protection to protect skin.
OM-225 Page 3 1-3. Additional Symbols For Installation, Operation, And Maintenance HOT P ARTS can cause severe burns. D Do not touch hot parts bare handed. D Allow cooling period before working on torch. MOVING P ARTS can cause injury . D Keep away from moving parts such as fans.
OM-225 Page 4 1-5. EMF Information Considerations About Welding Or Cutting And The Ef fects Of Low Frequency Electric And Magnetic Fields W elding or cutting current, as it flows through the welding or cutting cables, will cause electromagnetic fields.
OM-225 Page 5 SECTION 1 – CONSIGNES DE S É CURIT É – LIRE A V ANT UTILISA TION pom_nd_fre_5/97 1-1. Signification des symboles Signifie Mise en garde ! Soyez vigilant ! Cette proc é dure pr é sente des risques de danger ! Ceux-ci sont identifi é s par des symboles adjacents aux directives.
OM-225 Page 6 D N ’ approchez pas le tube du chalumeau et l ’ arc pilote lorsque la g â chette est enfonc é e. D Le c â ble de masse doit ê tre pinc é correctement sur la pi è ce à couper ,.
OM-225 Page 7 1-3. Dangers suppl é mentaires en relation avec l ’ installation, le fonctionnement et la maintenance DES PIECES CHAUDES peuvent pro- voquer des br û lures graves. D Ne pas toucher des parties chaudes à mains nues. D Laisser refroidir avant d ’ intervenir sur la torche.
OM-225 Page 8 1-5. Information sur les champs é lectromagn é tiques Donn é es sur le soudage é lectrique et sur les ef fets, pour l ’ organisme, des champs magn é tiques basse fr é quence Le courant de soudage ou de coupage passant dans les c â bles de puis- sance c r é e des causera des champs é lectromagn é tiques.
OM-225 Page 9 SECTION 2 – INST ALLA TION 2-1. Specifications Input Power Rated Output Amperes Input at Rated Load Output T ype of Output Plasma Gas Plasma Gas Flow/ Rated Cutting Maximum Open- Circuit Power 230 V 460 V KV A KW Output Gas Pressure Capacity V oltage DC Single- Phase 50 A @ 1 1 0 V olts DC, 50% Duty Cycle 48 (0.
OM-225 Page 10 2-3. Cutting Speed The cutting speed curves show the recommended maximum cutting speed capabilities of the power source and torch for mild steel of various thickness. Cut at speeds below the lines shown t o avoid poor cuts and torch wear .
OM-225 Page 1 1 19 in (483 mm) 2-4. Selecting A Location Ref. ST-801 390 / ST -801 393 1 Lifting Handles Use handles to lift unit. 2 Hand Cart Use cart or similar device to move unit. 3 Rating Label Use rating label to determine input power needs. 4 Line Disconnect Device Locate unit near correct input power supply .
OM-225 Page 12 2-5. Connecting Work Clamp And Gas/Air Supply 1 Work Clamp 2 W orkpiece Connect work clamp to a clean, paint-free location on workpiece, as close to cutting area as possible. 3 Gas/Air Input (Female 1/4 NPT) 4 Quick Connect Gas Fitting 5 Standard Pipe Fitting (Male 1/4 Inch) Obtain desired fitting.
OM-225 Page 13 L1 2-7. Connecting Input Power input_2 – 3/96 / Ref. ST-144 221 / Ref. ST -070 399-C / Ref. ST -801 390 / ST-801 392 Check input voltage available at site. 1 Input V oltage Selector Switch 2 Selector Switch Label Rotate switch to match input voltage.
OM-225 Page 14 SECTION 3 – OPERA TION 3-1. Controls ST-801 394 12 3 5 1 Power Switch 2 Power Light Power light comes On when Power switch is placed in On position. When unit is turned On, the power light blinks for a short time (3 seconds for 230 V AC, 1 se- cond f o r 460 V AC) to indicate a delay during which the circuits are being initialized.
OM-225 Page 15 3-2. Sequence Of Operation Put On Personal Safety Equipment Install & Connect Equipment EXAMPLE Of Cutting Operation ST-801 400-A Press trigger . Pilot arc starts. Postflow continues for approx. 20 to 30 seconds after releasing trigger; cutting arc can be instantly restarted during postflow by pressing trigger .
OM-225 Page 16 SECTION 4 – MAINTENANCE & TROUBLESHOOTING 4-1. Routine Maintenance Y Disconnect power before maintaining. . Maintain more often during severe conditions.
OM-225 Page 17 4-2. T rouble Lights 1 Pressure Light Lights if gas/air pressure is below 40 PSI (276 kPa). Tur n power Of f, and check for prop- er gas/air pressure (see Section 2-5). 2 Cup Light Lights if shield cup is loose. T urn power Off, and check shield cup connection (see torch Owner ’ s Manual).
OM-225 Page 18 4-4. T roubleshooting T rouble Remedy No pilot arc; dif ficulty in establishing an arc. Clean or replace worn consumables as necessary (see torch Owner ’ s Manual). Check for damaged torch or torch cable (see torch Owner ’ s Manual).
OM-225 Page 19 SECTION 5 – ELECTRICAL DIAGRAM SC-186 187 Figure 5-1. Circuit Diagram.
OM-225 Page 20 SECTION 6 – P ARTS LIST Figure 6-1. Complete Assembly 1 2 3 4 5 6 7 89 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 23 32 31 30 27 33 34 37 36 35 39 38 40 41 42 43 44 45 46 47 4.
OM-225 Page 21 Description Part No. Dia. Item No. Figure 6-1. Complete Assembly Quantity Mkgs. 1 126 026 LABEL, warning electric shock 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 171 321 KIT , replacement handle black 2 .
OM-225 Page 22 Description Part No. Dia. Item No. Figure 6-1. Complete Assembly (Continued) Quantity Mkgs. 48 R1,3 181 391 RESISTOR, .3 ohm 140W 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 PC5 181 389 CF PWB, assembly 1 .
OM-225 Page 23 Notes.
OM-225 Page 24 Notes.
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 W orks Company 1635 W est S pencer Street Applet on, W I 5 4914 USA International He adquarte rs .
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If you have not bought Miller Electric OM-225A 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 OM-225A - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Miller Electric OM-225A you will learn all the available features of the product, as well as information on its operation. The information that you get Miller Electric OM-225A will certainly help you make a decision on the purchase.
If you already are a holder of Miller Electric OM-225A, 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 OM-225A.
However, one of the most important roles played by the user manual is to help in solving problems with Miller Electric OM-225A. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Miller Electric OM-225A 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
