Buffalo Tools HIT70 Quick reference guide

ARC Welder
Assembly & Operating Instructions
READ ALL INSTRUCTIONS AND WARNINGS BEFORE USING THIS PRODUCT.
This manual provides important information on proper operation & maintenance. Every effort has been
made to ensure the accuracy of this manual. These instructions are not meant to cover every possible
condition and situation that may occur. We reserve the right to change this product at any time
without prior notice.
IF THERE IS ANY QUESTION ABOUT A CONDITION BEING SAFE OR UNSAFE, DO
NOT OPERATE THIS PRODUCT!
HAVE QUESTIONS OR PROBLEMS? CONTACT CUSTOMER SERVICE.
If you experience a problem or need partsfor this product, visit our website http://www.buffalotools.com
or call our customer help line at 1-636-532-9888 , Monday-Friday, 8 AM - 4 PM Central Time. A copy of
the sales receipt is required.
FOR CONSUMER USE ONLY – NOT FOR PROFESSIONAL USE.
KEEP THIS MANUAL, SALES RECEIPT & APPLICABLE WARRANTY FOR FUTURE
REFERENCE.
202002
ITEM # HIT70

ELECTRIC SHOCK can kill.
• Do not touch electrically live parts such
as output terminals or internal wiring.
• Insulate yourself from the work and
ground.
• Always wear dry insulating gloves.
WARNING
FUMES AND GASES
can be dangerous.
• Keep your head out of fumes.
• Use ventilation or exhaust to
remove fumes from breathing
zone.
ARC RAYS
can burn.
• Wear eye, ear and body
protection.
WELDING, CUTTING and
GOUGING SPARKS
can cause fire or explosion
• Keep flammable material away.
• Do not weld, cut or gouge on
containers that have held com-
bustibles.
GROUND CONNECTION
The frame of the welder must be
grounded. A ground terminal marked
with the symbol is located on the under
panel for this purpose. See your local
and national electrical codes for proper
grounding methods.
A grounding conductor is supplied in the input
cord, it is important that the supply receptacle
ground is connected.
CAUTION
WELDINGandCUTTING
SPARKS can
cause fire or explosion.
Remove fire hazards from the welding area.
If this is not possible, cover them to prevent
the weldingsparks from starting a fire.
Remember thatweldingsparksandhot
materials fromweldingcaneasily go throughsmallcracks
andopenings to adjacentareas. Avoidweldingnear
hydrauliclines.Have a fireextinguisherreadilyavailable.
6.b. Wherecompressedgasesaretobeused at the jobsite,
specialprecautionsshouldbeusedtopreventhazardous
situations.Refer to “Safety in WeldingandCutting” (ANSI
Standard Z49.1) and the operatinginformation for the
equipment being used.
6.c. Whennotwelding,makecertain no part of the electrode
circuit is touching the work or ground. Accidental contact can
cause overheating and create a fire hazard.
6.d. Do not heat, cut or weld tanks, drums or containers until the
proper steps have been taken to insure that such procedures
willnotcause flammable or toxicvapors fromsubstances
inside. They can cause an explosion even
though they have
been“cleaned”.
6.e. Vent hollow castings or containers before heating, cutting or
welding. They may explode.
6.f.
Sparks and spatter are thrown from the welding arc. Wear oil
free protective garments such as leather gloves, heavy shirt,
cuffless trousers, high shoes andacap over your hair. Wear
ear plugs when welding out of position or in confined places.
Alwayswearsafety glasseswith sideshieldswhen in a
welding area.
ELECTRIC AND
MAGNETIC FIELDS
may be dangerous
2.a.Electric currentflowingthroughanyconductorcauses
localized ElectricandMagnetic Fields (EMF). Welding
currentcreates EMF fieldsaroundweldingcablesand
welding machines
2.b. EMF fieldsmayinterferewith somepacemakers,and
welders havingapacemaker should consult their physician
before welding.
2.c. ExposuretoEMF fieldsinweldingmayhave otherhealth
effects which are now not known.
2.d. All welders should use the following procedures in order to
minimizeexposure to EMF fields from the weldingcircuit:
2.d.1. Route the electrode and work cables together-Secure
them with tape when possible.
2.d.2. Nevercoil the electrodeleadaroundyourbody.
2.d.3. Do notplaceyourbodybetween the electrodeand
work cables. If the electrode cable is on your right
side, the work cable should also be on your right side.
2.d.4. Connect the work cable to the workpiece as close as
possible to the area being welded.
2.d.5. Do not work next to welding power source.

HIT70 ARC Welder Assembly & Operating Instructions Manual 2
GENERAL PRODUCT SPECIFICATIONS
KEEP THIS MANUAL, SALES RECEIPT & APPLICABLE WARRANTY FOR FUTURE
REFERENCE.
READ ALL INSTRUCTIONS AND WARNINGS BEFORE USING THIS PRODUCT.
When unpacking, check to make sure all parts listed are included. If any parts are missing or broken,
please call Customer Service at 1-636-532-9888
FOR CONSUMER USE ONLY – NOT FOR PROFESSIONAL USE
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.
This manual contains important information regarding safety, operation, maintenance and storage of this
product. Before use, read carefully and understand all warnings, cautions, instructions and labels.
Failure to do so could result in serious personal injury, property damage or even death.
IMPORTANT SAFETY RULES
COMMON SENSE AND CAUTION ARE FACTORS WHICH CANNOT BE BUILT INTO ANY PRODUCT.
THESE FACTORS MUST BE SUPPLIED BY THE OPERATOR.
FEATURES:
For Small To Medium Sized Welding
Jobs Around The Home, Garage, Or Farm
SPECIFICATIONS
Welds Mild Steel Up To 1/8˝ With
1/16in., 5/64in. or 3/32in.
Welds Carbon Steel
Max input current: 21.4A
Amperage Output:
10 (Low), 70 (High)
Advanced Thermal Overload Protecton
INVERTER IGBT technology
Suggested Electrodes: E6013, E7018
Face Shield
Includes Welding Cable & Electrode Holder,
Grounding Cable & Earth Clamp,
Chipping Hammer/Brush & Welding Face Shield

HIT70 ARC Welder Assembly & Operating Instructions Manual3
GENERAL PRODUCT INFORMATION
Welds Carbon Steel Up To 1/8˝ Width
1/16in., 5/64in. or 3/32in.
Max input current: 21.4A
Amperage Output:
10 (Low), 70 (High)
Advanced Thermal Overload Protecton
INVERTER IGBT technology
6 lbs
E6013, E7018
Welding Face Shield
Welding Cable & Electrode Holder
Grounding Cable & EarthClamp
72V
10-70A
30%
9 INCH x 5 INCH x 7 INCH

HIT70 ARC Welder Assembly & Operating Instructions Manual4
GENERAL PRODUCT INFORMATION
Face Shield
Includes Welding Cable & Electrode Holder,
Grounding Cable & Earth Clamp,
Chipping Hammer/Brush & Welding Face Shield
Power Cord
Work Cable
Work
Cable
Work Clamp Electrode
Holder Brush
Output Current Knob
Positive Quick Disconnect
ON/OFF Switch
Negative Quick Disconnect
Power Cord
Output Current Knob
C
High Temp LED Indicator
POWER LED Indicator
MIN is 10A and MAX is 70A.

HIT70 ARC Welder Assembly & Operating Instructions Manual5
GENERAL PRODUCT INFORMATION

HIT70 ARC Welder Assembly & Operating Instructions Manual6
GENERAL PRODUCT INFORMATION

HIT70 ARC Welder Assembly & Operating Instructions Manual7
GENERAL PRODUCT INFORMATION

HIT70 ARC Welder Assembly & Operating Instructions Manual8
GENERAL PRODUCT INFORMATION

HIT70 ARC Welder Assembly & Operating Instructions Manual9
GENERAL PRODUCT INFORMATION

HIT70 ARC Welder Assembly & Operating Instructions Manual10
GENERAL PRODUCT INFORMATION

HIT70 ARC Welder Assembly & Operating Instructions Manual11
GENERAL PRODUCT INFORMATION

HIT70 ARC Welder Assembly & Operating Instructions Manual12
GENERAL PRODUCT INFORMATION

HIT70 ARC Welder Assembly & Operating Instructions Manual13
GENERAL PRODUCT INFORMATION

HIT70 ARC Welder Assembly & Operating Instructions Manual14
GENERAL PRODUCT INFORMATION
INVERTER
CIRCUIT
IGBT
CIRCUIT
CONTROL

HIT70 ARC Welder Assembly & Operating Instructions Manual15
GENERAL PRODUCT INFORMATION
PARTS DIAGRAM
NOTE: GROUND CONNECTION IS LOCATED ON BACK PANEL

HIT70 ARC Welder Assembly & Operating Instructions Manual16
GENERAL PRODUCT INFORMATION
PARTS LIST
13 Strap
SCREEN