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CAUTION
An incorrect spark arrester may lead to damage to the engine or adversely affect performance.
HIGH FREQUENCY GENERATORS FOR TIG APPLICATIONS
The
REMOTE CONTROL
The Ranger 250 is equipped with a
When in the
The
NOTE: When a wire feeder with a built in welding volt- age control is connected to the
WARNING
1.Be grounded to the frame of the welder using a grounded type plug.
2.Be double insulated.
Do not ground the machine to a pipe that carries explosive or combustible material.
When this welder is mounted on a truck or trailer, its frame must be electrically bonded to the metal frame of the vehicle, use a #8 or larger copper wire connect- ed between the machine grounding stud and frame of the vehicle. When this engine driven welder is con- nected to premises wiring such as that in a home or shop, its frame must be connected to the system earth ground. See further connection instructions in the sec- tion entitled "Standby Power Connections" as well as the article on grounding in the latest U.S. National Electrical Code and the local code.
In general, if the machine is to be grounded, it should be connected with a #8 or larger copper wire to a solid earth ground such as a metal water pipe going into the ground for at least ten feet and having no insulat- ed joints, or to the metal framework of a building which has been effectively grounded.
The U.S. National Electrical Code lists a number of alternate means of grounding electrical equipment. A machine grounding stud marked with the symbol 
is provided on the front of the welder.
WELDING TERMINALS
The Ranger 250 is equipped with a toggle switch for selecting "hot" welding terminal when in the "WELD TERMINALS ON" position or "cold" welding terminal when in the "REMOTELY CONTROLLED" position.
ELECTRICAL CONNECTIONS
MACHINE GROUNDING
Because this portable engine driven welder creates its own power, it is not necessary to connect its frame to an earth ground, unless the machine is connected to premises wiring (home, shop, etc.)
To prevent dangerous electric shock, other equipment to which this engine driven welder supplies power must:
WELDING OUTPUT CABLES
With the engine off connect the electrode and work cables to the output studs. The welding process dic- tates the polarity of the electrode cable. These con- nections should be checked periodically and tightened with a 3/4" wrench.
RANGER 250