Connecting Gas/Air Supply; Electrical Service Guide - Hobart AirForce 750 Owner's Manual

2-6. Connecting Gas/Air Supply

Use only clean and dry gas/air with 70 to 150 psi
(483 to 1034 kPa) pressure.

2-7. Electrical Service Guide

Input Voltage
Input Amperes At Rated Output
Max Recommended Standard Fuse Rating In Amperes
Min Input Conductor Size In AWG/Kcmil
Max Recommended Input Conductor Length In Feet (Meters)
Min Grounding Conductor Size In AWG/Kcmil
Reference: 1999 National Electrical Code (NEC)
1 Consult 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).
1
3
4
1
2
Time-Delay
Normal Operating 3
2
From Gas/Air Supply
Single Phase
200 230
42.3 36.8
50 45
60 60
8 10
110 97
(33) (29)
10 10
1 Unit Gas Fitting (Female 1/4
NPT)
2 Quick Connect Gas Fitting
3 Standard Gas Fitting
Obtain and install desired fitting.
4 Hose
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.
Y Incorrect plasma gas can
cause torch and power
source damage. Use only air
or nitrogen for the plasma
gas.
Ref. 801 455
Three Phase
460 230 460
18.4 18.4 9.2
20 20 10
25 25 15
14 14 14
153 77 307
(47) (23) (94)
14 14 14
OM-279 Page 11
575
7.4
8
10
14
479
(146)
14