Hobart Welding Products HP-70 Duty Cycle And Overheating, Power Source Dimensions And Weight

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.A complete Parts List is available at www.MillerWelds.com

4-2. Duty Cycle And Overheating

For Units Connected to a 208 Volt Circuit or a 230 Volt Circuit:

50% Duty Cycle At 40 amperes, 140 volts DC

50%dutycycle

5 Minutes Cutting

5 Minutes Resting

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 unit to cool or temperature light to go off. Reduce amperage or duty cycle before cutting or gouging.

NOTICE Exceeding duty cycle can damage unit and void warranty.

Overheating

A

0
	15
	OR
Minutes	Reduce Duty Cycle

sduty1 5/95 / Ref. 244 405-A

4-3. Power Source Dimensions And Weight

8-1/4 in.

(210 mm)

Dimensions And Weight

31.4 lb (14.2 kg)

including torch11-1/4 in. (286 mm)

14-1/4 in.

(362 mm)

loc_2 3/96 - Ref. 244 405-A

4-4. Torch Dimensions And Weight

8-3/8 in.

(213 mm)

1 in.

(25 mm)

	1-3/8 in.
3.0 lb (1.4 kg)	(35 mm)	Ref. 801 397-A

OM-244 013 Page 12

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Contents OM-244 013C ProcessesDescription File Plasma CuttersFrom Miller to You Table of Contents Page Symbol Usage Plasma Arc Cutting HazardsCutting can cause fire or explosion Electric Shock can killFlying Sparks can injure ARC Rays can burn eyes and skinNoise can damage hearing Fumes and Gases can be hazardousHOT Parts can burn Moving Parts can injureFlying Metal or Dirt can injure eyes Overuse can cause OverheatingPrincipal Safety Standards California Proposition 65 WarningsEMF Information About Implanted Medical DevicesSignification des symboles Consignes DE Sécurité Lire Avant UtilisationLE Coupage présente un risque de feu ou d’explosion UN Choc Électrique peut tuerRisque de blessure en cas LES Étincelles Projetées peuvent provoquer des blessuresLE Bruit peut endommager l’ouïe LES Fumées ET LES GAZ peuvent être dangereux’ARC Plasma peut provoquer des blessures LES Bouteilles peuvent exploser si elles sont endommagéesLES Pièces Chaudes peuvent provoquer des brûlures Les Pièces Mobiles peuvent provoquer des blessures’EMPLOI Excessif peut LA Chute DE L’ÉQUIPEMENT peut provoquer des blessuresRisque D’INCENDIE OU LE Coupage Ã L’ARC peut causer des interférenceProposition californienne 65 Avertissements Principales normes de sécuritéInformations relatives aux CEM En ce qui concerne les implants médicauxI1max DefinitionsI1eff Installation SpecificationsPower Source Dimensions And Weight Torch Dimensions And WeightDimensions And Weight Duty Cycle And OverheatingConnecting Gas/Air Supply Connecting Work ClampDo not move or operate unit where it could tip Selecting a LocationElectrical Service Guide Extension Cord DataConnecting 1-Phase Input Power For 240 VAC Serial Number And Rating Label LocationEngine Control Switch must be set at RUN Prong Not UsedAlways connect green or Terminal, never to a loadInstalling Alternative Plug Cable Management StrapElectrode Wrench Operation ControlsTrigger Safety Lock Mild Steel Recommended Cut SpeedPilot arc starts immediately when trigger is pressed Plasma Cutting System PracticesSequence Of Cutting Operation Example Of Cutting OperationSequence Of Cutting Using Stand-off Guide Example Of Cutting Using Stand-off GuideSequence Of Piercing Operation Maintenance & Troubleshooting Routine MaintenanceDisconnect power Before maintainingChecking Or Replacing Filter Element Status/Trouble Lights Checking Shield Cup Shutdown SystemChecking/Replacing Retaining Cup, Tip, And Electrode Turn Off power source before checking torch partsElectrode Wrench Torch Connections Torch And Work Cable ConnectionsWork Cable Connections Troubleshooting Power Source Trouble RemedyTroubleshooting Torch Arc goes on and off while cuttingElectrical Diagram Circuit Diagram244 011-B Recommended Spare Parts Parts ListRecommended Spare Parts Service SupportOwner’s Record Miller Electric Mfg. Co