Lincoln Electric handy mig, Руководство оператора, Страница: 11 / 32

A-4
INSTALLATION
HANDY MIG
A-4
SHIELDING GAS CONNECTION
(FIGURE A.5)
Refer to Figure A.5.
1. Chain the cylinder to a wall or other stationary sup-
port to prevent the cylinder from falling over.
Insulate the cylinder from the work circuit work
ground.
2. With the cylinder securely installed, remove the
cylinder cap. Stand to one side away from the out-
let and open the cylinder valve very slightly for an
instant. This blows away any dust or dirt which may
have accumulated in the valve outlet.
BE SURE TO KEEP YOUR FACE AWAY FROM
THE VALVE OUTLET WHEN
“ CRACKING ” THE
VALVE. Never stand directly in front of or behind
the flow regulator when opening the cylinder
valve. Always stand to one side.
------------------------------------------------------------------------
3. Attach one end of the inlet gas hose to the outlet fit-
ting of the gas cylinder secure with hose clamp.
Connect the other end to the Gas Inlet Fitting on
the machine and secure with hose clamp. Make
certain the gas inlet hose is not kinked or twisted.
4. The machine is supplied with a regulator suitable
for a mixed shielding gas CO
2
Argon. For welding
with 100% CO
2
a suitable regulator or adapter must
be purchased separately from a welding gas suppli-
er. To prevent leakage, if welding with 100% CO
2
shielding gas the regulator for carbon dioxide must
have a plastic adapter washer seated in the fitting
that attaches to the cylinder. This adapter is avail-
able from your local gas supplier.
WARNING
CYLINDER VALVE
GAS CYLINDER
REGULATOR
HOSE
CODE REQUIREMENTS FOR ELECTRI-
CAL INPUT CONNECTIONS
This welding machine must be connected to a
power source in accordance with applicable elec-
trical codes.
------------------------------------------------------------------------
The United States National Electrical Code (Article
630-B, 1990 Edition) provides standards for amperage
handling capability of supply conductors based on
duty cycle of the welding source.
If there is any question about the installation meeting
applicable electrical code requirements, consult a
qualified electrician.
Do not connect the machine to an input power
supply with a rated voltage that is greater than 125
volts.
Do not remove the power cord ground prong.
REQUIREMENTS FOR MAXIMUM OUTPUT
A line cord with a 15 amp, 125 volt, three-prong plug
(NEMA Type 5-15P) is factory installed on the
machine Connect this plug to a mating grounded
receptacle which is connected to a 20 amp branch cir-
cuit with a nominal voltage rating of 115 volts to 125
volts, 60 hertz, AC only. If connected to a circuit pro-
tected by fuses, use a time delay fuse marked
“ D ” .
With this installation, the machine can be used at an
output of 70 amps, 17 volts, 20% duty cycle (2 min-
utes of every 10 minutes used for welding).
EXTENSION CORD USAGE
If an extension cord is required, use one that is rated
for the application and is 3 conductor #14 AWG (2.1
mm
2 ) or larger. The recommended maximum lengths
are 25 ft (7.5 m) if #14 AWG (2.1 mm 2 ) is used and 50
ft (15 m) if #12 AWG (3.3 mm 2 ) is used.
WARNING
CAUTION