Miller Spectrum 300 Manuel Du Propriétaire
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Miller Spectrum 300 Manuel Du Propriétaire

Miller Spectrum 300 Manuel Du Propriétaire

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Amperes Input at
Rated Output,
Single-Phase
115 V
Rated Output
115 VAC Input:
20 A @ 89 Volts DC
(20 A Input Circuit);
25 A @ 89 Volts DC
26
(30 A Input Circuit);
(0.4*)
230 VAC Input:
25 A @ 89 Volts DC;
35% Duty Cycle In All
Cases
*While idling
cover_om 4/95 − ST-801 302-B
OWNER'S
MANUAL
Spectrum 300
For Plasma Arc Cutting (PAC)
60 Hz,
230 V
KVA
115 VAC
Input: 3.1
17
(0.05*)
(0.2*)
230 VAC
Input: 4.0
(0.05*)
1997 MILLER Electric Mfg. Co.
May 1997
Effective With Serial No. KG199763
Plasma
Plasma
Plasma
Gas Flow/
Gas Flow/
Gas
KW
Pressure
115 VAC
Input: 2.4
4.5 CFM
Air Or
(0.04*)
(129 L/min)
Nitrogen
230 VAC
At 60 PSI
Only
Input: 3.1
(414 kPa)
(0.04*)
Form: OM-2210B
Rated
Cutting
Capacity At
Capacity At
Max
Max
10 IPM
OCV
115 VAC
Input: 1/4 in
(6 mm)
265 Volts DC
230 VAC
Input: 5/16 in
(8 mm)
PRINTED IN USA

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  • Page 1 Input: 4.0 Input: 3.1 Input: 5/16 in (414 kPa) 25 A @ 89 Volts DC; (0.05*) (0.04*) (8 mm) 35% Duty Cycle In All Cases *While idling  cover_om 4/95 − ST-801 302-B 1997 MILLER Electric Mfg. Co. PRINTED IN USA...

  • Page 3: Symbol Usage

    SECTION 1 − SAFETY FOR PLASMA ARC CUTTING safety_pom1 4/95 OM-2210B − 5/97 1-1. Symbol Usage Y Marks a special safety message. Means Warning! Watch Out! There are possible hazards with this procedure! The possible hazards are shown in the adjoining symbols. Means NOTE;...
  • Page 4 ARC RAYS can burn eyes and skin. NOISE can damage hearing. Arc rays from the cutting process produce intense Prolonged noise from some cutting applications can visible and invisible (ultraviolet and infrared) rays damage hearing if levels exceed limits specified by that can burn eyes and skin.

  • Page 5: Principal Safety Standards

    FIRE OR EXPLOSION can result from HIGH-FREQUENCY RADIATION placing unit over, near interfere with radio navigation, safety combustible surfaces. services, computers, communications equipment. 1. Do not locate unit on, over, or near combustible surfaces. 1. Have only qualified persons familiar with electronic equipment perform this installation.

  • Page 6: Symboles Utilisés

    SECTION 1 − CONSIGNES DE SÉCURITÉ CONCERNANT LE COUPAGE À L’ARC AU PLASMA safety_pom_fre 4/95 1-1. Symboles utilisés Symbole graphique d’avertissement! Attention! Cette procédure comporte Y Indique un message de sécurité particulier des risques possibles! Les dangers éventuels sont représentés par les Prendre NOTE;...

  • Page 7: Dangers Supplémentaires En Relation Avec L'installation, Le Fonctionnement Et La Maintenance

    LES RAYONS D’ARC peuvent entraîner des LE BRUIT peut endommager l’ouïe. brûlures aux yeux et à la peau. Certaines applications de coupage produisent un bruit constant, ce qui peut endommager l’ouïe si le niveau sonore Les rayons d’arc provenant du procédé de coupage dépasse les limites permises par l’OSHA (reportez−vous produisent des rayons visibles et invisibles intenses aux Principales normes de sécurité).
  • Page 8 La mise en place de l’appareil sur, au-dessus LE RAYONNEMENT HAUTE FREQUENCE ou à proximité de surfaces inflammables peut peut provoquer des interférences avec les être source d’INCENDIES OU d’EXPLOSION. équipements de radio−navigation et de communication, les services de sécurité et 1.

  • Page 9: Selecting A Location

    SECTION 2 − INSTALLATION 2-1. Selecting A Location 6-3/4 in (171 mm) Dimensions And Weight 42 lb (19.1 kg) 17 in (432 mm) 18 in (457 mm) Movement Lifting Handle Y Do not move or operate unit Use handle to lift unit. where it could tip.

  • Page 10: Connecting Work Clamp And Gas/Air Supply

    2-2. Connecting Work Clamp And Gas/Air Supply Work Clamp Workpiece Connect work clamp to a clean, paint-free location on workpiece, as close to cutting area as possible. Use only clean, dry air with 70 to 150 psi (483 to 1034 kPa) pressure.

  • Page 11: Setting Input Voltage Selector Switch And Connecting Input Power

    2-3. Setting Input Voltage Selector Switch And Connecting Input Power Check input voltage available at site. Input Voltage Selector Switch Switch is accessible through slot in rear panel. Changeover Switch Label Look at label to find correct switch position. 115V 230V Move switch to match input voltage.
  • Page 12 SECTION 3 − OPERATION 3-1. Controls Setting Gas/Air Pressure Set To 60 PSI (414 kPa) Requires 70-150 PSI (483-1034 kPa) Supply Power Switch with 115 VAC input power, and the overload Trouble Lights (See Section 4-2) protection on the input power circuit fre- Power Light Setting Gas/Air Pressure quently opens, either reduce the cutting out-...

  • Page 13: Duty Cycle And Overheating

    3-2. Duty Cycle And Overheating Duty Cycle is percentage of 10 min- utes that unit can cut at rated load without overheating. If unit overheats, thermostat(s) opens, output stops, Temperature trouble light goes On, and cooling fan runs. Wait fifteen minutes for 115 VAC Input Power: 35% Duty Cycle At 20 Amperes, 20 Ampere Input Circuit unit to cool or temperature light to 115 VAC Input Power: 35% Duty Cycle At 25 Amperes, 30 Ampere Input Circuit...

  • Page 14: Sequence Of Operation

    3-4. Sequence Of Operation Do not clean torch by hitting it against a Inspect shield cup, tip, and electrode for hard surface. Hitting hard surfaces can wear before cutting or whenever cutting damage torch parts and stop proper opera- speed has been significantly reduced (see tion.

  • Page 15: Routine Maintenance

    SECTION 4 − MAINTENANCE & TROUBLESHOOTING 4-1. Routine Maintenance Maintain more often Y Disconnect power during severe conditions. before maintaining. Each Use Check Check Torch Tip, Gas/Air Electrode, Pressure And Shield Every Week Check Shield Cup Shutdown System 3 Months Replace Service Damaged Or...

  • Page 16: Overload Protection: Trouble Lights & Checking Shield Cup Shutdown System

    4-2. Overload Protection: Trouble Lights & Checking Shield Cup Shutdown System If certain problems occur, the Ready light goes off, a trouble light comes on, and output stops. Pressure Light Lights if gas/air pressure is below 40 PSI (276 kPa). Turn power Off, and check for prop- er gas/air pressure (see Section 3-1).

  • Page 17: Torch And Work Cable Connections

    4-3. Torch And Work Cable Connections If torch or work cable needs to be removed or replaced, proceed as follows: Turn power Off, and disconnect in- put power plug from receptacle. Re- move top and screws holding front panel in place. Without disconnect- ing any plugs, move front panel to allow access.
  • Page 18 4-4. Troubleshooting Trouble Remedy No pilot arc; difficulty in establishing an Clean or replace worn consumables as necessary (see torch Owner’s Manual). arc. Check for proper installation of torch swirl ring (see torch Owner’s Manual). Check for damaged torch or torch cable (see torch Owner’s Manual). Have Factory Authorized Service Agent check control relay CR6, power control board PC1, safety con- trol board PC2, gas valve GS1, rectifier SR1, and check gas/air system for leaks.
  • Page 19 SECTION 5 − ELECTRICAL DIAGRAM SC-181 267 Figure 5-1. Circuit Diagram For Power Source OM-2210 Page 17...
  • Page 20 SECTION 6 − PARTS LIST ST-801 412-B Figure 6-1. Main Assembly OM-2210 Page 18...
  • Page 21 Item Dia. Part Mkgs. Description Quantity Figure 6-1. Main Assembly ... . . 175 055 COVER, top ............
  • Page 22 Item Dia. Part Mkgs. Description Quantity Figure 6-1. Main Assembly (Continued) ......FRONT PANEL, (consisting of) (Continued) .
  • Page 23 Effective January 1, 1997 (Equipment with a serial number preface of “KH” or newer) This limited warranty supersedes all previous Miller warranties and is exclusive with no other guarantees or warranties expressed or implied. LIMITED WARRANTY − Subject to the terms and conditions APT, ZIPCUT &...
  • Page 24 115 V, 20 A Receptacle (#176 656) Tip, 25 A (#141 432) (#176 657) Swirl Ring, 25 A Receptacle matches 20 A plug (#176 658) Shield Cup, 25 A supplied with Spectrum 300 (#903 (#169 232) O-Ring, 55 A 479) and (#903 479-02-1). 3/96...

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