High Frequency Generators For Tig Applications; Remote Control; Electrical Connections; Machine Grounding - Lincoln Electric RANGER 250 IM833-C Operator's Manual

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CAUTION
An incorrect spark arrester may lead to damage to
the engine or adversely affect performance.
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HIGH FREQUENCY GENERATORS FOR
TIG APPLICATIONS
The K930-2 TIG Module is suitable for use with the
Ranger 250. The Ranger 250 and any high frequency
generating equipment must be properly grounded.
See the K930-2 Operating Manual for completed
instructions on installation, operation, and mainte-
nance.

REMOTE CONTROL

The Ranger 250 is equipped with a 6-pin and a 14-pin
connector. The 6 pin connector is for connecting the
K857 or K857-1 Remote Control (optional) or for TIG
welding, the K870 foot Amptrol or the K963-3 hand
Amptrol.
When in the CC-STICK, PIPE, and CV-WIRE modes
and when a remote control is connected to the
Amphenol, the auto-sensing circuit in the Ranger 250
automatically switches the OUTPUT control from con-
trol at the welder to remote control .
The 14-pin connector is used to directly connect a
wire feeder or TIG Module (K930-2) control cable. In
the CV-WIRE mode, the Ranger 250 auto-sensing cir-
cuit automatically makes the Ranger 250 Output
Control inactive and the wire feeder voltage control
active when the control cable is connected to the 14
pin connector.
NOTE: When a wire feeder with a built in welding volt-
age control is connected to the 14-pin connector, do
not connect anything to the 6-pin connector.

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:
INSTALLATION
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.
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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.

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
WARNING
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