Hobart 750 manual Connecting Gas/Air Supply, Electrical Service Guide

Page 15

2-6. Connecting Gas/Air Supply

Use only clean and dry gas/air with 70 to 150 psi

1 Unit Gas Fitting (Female 1/4

(483 to 1034 kPa) pressure.

NPT)

 

2

Quick Connect Gas Fitting

1

3

Standard Gas Fitting

 

 

Obtain and install desired fitting.

 

4

Hose

2

Obtain suitable hose according to

 

installed fitting, and connect to fit-

 

ting. Route hose to gas/air supply.

 

Adjust gas/air pressure according

 

to Section 3-2.

3

Y Incorrect plasma gas can

4

From Gas/Air Supply

cause torch and power

source damage. Use only air

 

 

 

 

 

or nitrogen for the plasma

 

 

gas.

 

 

 

 

 

 

 

 

 

Ref. 801 455

 

 

 

 

 

 

 

 

 

 

 

2-7. Electrical Service Guide

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Single Phase

 

 

Three Phase

 

 

 

 

 

 

 

 

 

 

Input Voltage

200

 

230

 

460

230

 

460

 

575

 

 

 

 

 

 

 

 

 

 

 

Input Amperes At Rated Output

42.3

 

36.8

 

18.4

18.4

 

9.2

 

7.4

 

 

 

 

 

 

 

 

 

 

 

Max Recommended Standard Fuse Rating In Amperes 1

 

 

 

 

 

 

 

 

 

 

Time-Delay 2

50

 

45

 

20

20

 

10

 

8

Normal Operating 3

60

 

60

 

25

25

 

15

 

10

 

 

 

 

 

 

 

 

 

 

 

Min Input Conductor Size In AWG/Kcmil

8

 

10

 

14

14

 

14

 

14

 

 

 

 

 

 

 

 

 

 

 

Max Recommended Input Conductor Length In Feet (Meters)

110

 

97

 

153

77

 

307

 

479

(33)

 

(29)

 

(47)

(23)

 

(94)

 

(146)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Min Grounding Conductor Size In AWG/Kcmil

10

 

10

 

14

14

 

14

 

14

 

 

 

 

 

 

 

 

 

 

 

Reference: 1999 National Electrical Code (NEC)

1Consult factory for circuit breaker applications.

2“Time-Delay” fuses are UL class “RK5” .

3“Normal Operating” (general purpose – no intentional delay) fuses are UL class “K5” (up to and including 60 amp), and UL class “H” ( 65 amp and above).

OM-279 Page 11

Image 15
Contents OM-279 ProcessesDescription From Hobart to You Table of Contents Page Cutting can cause fire or explosion Symbol UsageMarks a special safety message Plasma Arc Cutting HazardsNoise can damage hearing Exploding Parts can injureFlying Sparks can cause injury ARC Rays can burn eyes and skinOveruse can cause Overheating HOT Parts can cause severe burnsMoving Parts can cause injury Flying Metal can injure eyesPrincipal Safety Standards EMF InformationAbout Pacemakers Identifie un message de sé curité particulier Signification des symbolesLE Coupage pré sente un risque de feu ou d’explosion UNE DÉ Charge É Lectrique peut entraîner la mortLE Plasma D’ARC peut entraîner des blessures Risque de blessure en casLE Bruit peut endommager l’ouïe LES Fumé ES ET LES GAZ peuvent ê tre dangereuxDES Particules Volantes peuvent blesser les yeux LES Bouteilles peuvent exploser si elles sont endommagé esDES Pieces Chaudes peuvent pro- voquer des brû lures graves DES Organes Mobiles peuvent provoquer des blessuresPrincipales normes de sé curité Information sur les champs é lectromagné tiquesConsignes relatives aux stimulateurs cardiaques Duty Cycle And Overheating InstallationSpecifications Dimensions And WeightMovement Location And Airflow Special installation may beCutting Speed Selecting a LocationElectrical Service Guide Connecting Gas/Air SupplyPlacing Jumper Links Grounding conductor first Connecting Input PowerThree-Phase System Always connectFront Panel Controls OperationSet pressure to 70 PSI 483 kPa Setting Gas/Air PressureSequence Of Operation Example Of Cutting OperationTrigger is pressed Months Maintenance & TroubleshootingChecking Shield Cup Shutdown System Trouble LightsRunning slowly TroubleshootingFan motor FM does not run Power light Circuit Diagram For 200/230/460 Volt Models Electrical DiagramsCircuit Diagram For 230/460/575 Volt Models OM-279 Main Assembly Parts ListDia Part Mkgs Description Quantity Consumable Parts For ICE-50C Support ServiceHobart Welding Products Contact your Distributor for