Lincoln Electric IM528-B manual Supply Connections, Input and Output Connections

INSTALLATION

6.Keep all access panels and covers securely in place.

7.All electrical conductors within 50 feet (15.2 m) of the welder should be enclosed in grounded rigid metallic conduit or equivalent shielding. Flexible helically-wrapped metallic conduit is generally not suitable.

8.When the welder is enclosed in a metal building, several good earth driven electrical grounds (as in 5 (b)) around the periphery of the building are recommended.

SUPPLY CONNECTIONS

Control cables are needed to connect the TIG Module’s 9-pin Input Receptacle to the power source. Four different cables are available. The proper choice of cable depends on the power source being used. Included in this report are charts which specify which cable is used with a particular power source. The cables come in standard 5 ft.(1.5m) lengths. 22(6.7m) and 45(13.7) ft. extensions are available.

Input power should be nominally 115 volts AC, but the TIG Module will operate properly on any AC voltage from 60 to 130 volts, 50 or 60 Hz. Input current draw is 1.3 amps at 115 volts.

INPUT AND OUTPUT CONNECTIONS

Input Connections

The user must provide welding cables for the connections between the work and electrode terminals of the power source, and the “FROM POWER SOURCE WORK” and “FROM POWER SOURCE ELECTRODE” terminals of the TIG Module. All connections are made with 1/2-13 threaded stud output terminals. Choose cables according to the output currents and duty cycles listed below.

200 Amps 100% Duty Cycle #2 AWG(30mm2) (minimum) Cable

300 Amps 60% Duty Cycle #1 AWG(35mm2) (minimum) Cable

400 Amps 20% Duty Cycle #1/0 AWG(50mm2) (minimum) Cable

These ratings are for cables lengths of 150 ft.(46.0m) or less.

TIG MODULE – 3 –

Note that two of the studs are labeled “FROM POWER SOURCE”; these are to be connected to the power source work and electrode terminals. If the power source output terminals are not labeled “WORK” and “ELECTRODE”, the TIG Module

“FROM POWER SOURCE ELECTRODE” terminal should go to the power source output terminal which matches the desired welding polarity. This is the negative (-) terminal when welding DC-. The choice of power source terminal will have no effect when welding AC.

TIG Torch and Workpiece Connections

One terminal is labeled “TO TIG TORCH”. Use that terminal for the TIG torch connection. TIG torches come in 12.5ft.(3.8m) and 25ft.(7.6m) lengths; use the shorter size whenever possible to minimize the possibility of high frequency interference.

The last terminal is labeled “TO WORKPIECE”. Use short lengths whenever possible to minimize the possibility of high frequency interference.

Shielding Gas Connections

The gas valve connections are labeled “GAS INPUT” and “GAS OUTPUT”. Any torch and gas supply conforming to Compressed Gas Association (CGA) standards can be connected via the 5/8-18 right hand threaded fittings. The cylinder of shielding gas must be equipped with a regulator and flowmeter. Install a hose between the flowmeter and the input fitting.

Water Valve Connection

The optional K844-1 Water Valve Kit can be installed in the TIG Module to provide on/off flow control for cooling water. The water valve opens and closes at the same time as the gas valve, so cooling water flows during the afterflow period. Connections are made via the two 5/8-18 left hand threaded connections. If using a water- cooled torch with a free running water supply, install a water line between the water supply and the “WATER INPUT” fitting on the TIG Module. Include a strainer in the supply line to prevent dirt particles from obstructing the water flow in the valve and cooling chamber of the TIG torch. Failure to do so could result in overheating of the water-cooled torch. Connect the torch water line to the “WATER OUTPUT” fitting. Use a nonmetallic drain line from the TIG torch power block to the drain.