Univex Welding System HF 251 User Manual

Issued August 2007 • Index No. AY/5.0  
High-Frequency Arc  
Starter and Stabilizer  
HF-251  
Industrial/Light Industrial Applications  
Processes  
Gas Tungsten Arc  
Welding (TIG)  
Input Power 1-Phase Power  
General Manufacturing  
Tool and Die  
Quick  
Rated Output 250 A, 60% Duty Cycle  
Repair Shops  
Weight HF-251D-1: 34 lb (15 kg)  
Specs  
All-Purpose Maintenance  
HF-251-2: 36 lb (16 kg)  
®
The Power of Blue.  
The HF-251 is compatible with power  
sources made by other manufacturers.  
For use with power sources with 14-socket  
receptacle (5-socket adapter available).  
Power on/off switch with pilot light.  
Start, off and continuous control.  
Gas solenoid valve.  
Increase the flexibility and performance  
of most AC, DC or AC/DC constant-current  
welding machines with these portable  
high-frequency arc starters and stabilizers.  
The unit impresses high frequency on the  
welding circuit and provides the arc control  
needed for TIG welding.  
High-frequency intensity control.  
Built-in postflow eliminates  
contamination.  
With the addition of an HF unit,  
your constant-current power source  
can handle welds on aluminum,  
magnesium, thin stainless steel,  
brass, copper and a wide variety of  
both ferrous and non-ferrous alloys.  
Protected secondary terminal.  
Convenient, portable design can be  
easily moved from location to location.  
14-pin receptacle on front panel for  
remote controls.  
Two versions (115 VAC, 50/60/100 Hz  
and 230 VAC, 50/60 Hz) meet most  
single-phase power configurations, and  
all are rated at 60% duty cycle.  
Specifications  
(Subject to change without notice.)  
Model  
Input Volts  
Rated Output at 60% Duty Cycle  
Dimensions  
Net Weight  
HF-251D-1  
HF-251-2  
115 VAC, 50/60/100 Hz  
230 VAC, 50/60 Hz  
250 A  
H: 13 in (330 mm)  
W: 9-1/4 in (235 mm)  
D: 16 in (406 mm)  
34 lb (15 kg)  
36 lb (16 kg)  
Warranted for 1 year, parts and labor.  
Miller Electric Mfg. Co.  
An Illinois Tool Works Company  
1635 West Spencer Street  
Appleton, WI 54914 USA  
International Headquarters Web Site  
Phone: 920-735-4505  
USA FAX: 920-735-4134  
Canadian FAX: 920-735-4169  
International FAX: 920-735-4125  
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