Matco Tools M148 Operator's Manual page 6

prevent hazardous situation.
 When not welding, make certain no part of the electrode circuit is touching the work or ground.
Accidental contact can cause overheating and create a fire hazard.
 Do not heat, cut or weld tanks, drums or containers until the proper steps have been taken to
insure that such procedures will not cause flammable or toxic vapors from substances inside.
They can cause an explosion even though they have been "cleaned".
 Vent hollow castings or containers before heating, cutting or welding. They may explode.
 Sparks and spatter are thrown from the welding arc. Wear oil free protective garments such as
leather gloves, heavy shirt, cuff less trousers, high shoes and a cap over your hair. Wear ear
plugs when welding out of position or in confined places. Always wear safety glasses with side
shields when in a welding area.
 Connect the work cable to the work as close to the welding area as practical. Work cables
connected to the building framework or other locations away from the welding area increase the
possibility of the welding current passing through lifting chains, crane cables or other alternate
circuits. This can create fire hazards or overheat lifting chains or cables until they fail.

Use only compressed gas cylinders containing the correct shielding gas and properly operating
regulators designed for the gas and cylinder pressure.
 Always keep cylinders:
Upright position securely chained to an undercarriage or fixed support.
-
- Away from areas where they may be struck or subjected to physical damage.
A safe distance from welding or cutting operations and any other source of heat, sparks, or
-
flame.
 Keep your head and face away from the cylinder valve outlet when opening.
 Valve protection caps should always be in place and hand tight except when the cylinder is in
use or connected for use.
UNSECURED CYLINDERS may be dangerous.
SAFETY
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