Lincoln Electric IM467-B manual Safety Precautions, Select Suitable Location

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INSTALLATION

Read this entire installation section before you start installation.

SAFETY PRECAUTIONS

WARNING

ELECTRIC SHOCK can kill.

•Do not touch electrically live parts or electrodes with your skin or wet clothing.

•Insulate yourself from the work and ground.

•Always wear dry insulating gloves.

Only qualified personnel should install, use, or service this equipment.

SELECT SUITABLE LOCATION

Place the Square Wave TIG 355 where clean, cooling air can flow freely in through the side louvers and out through the rear louvers. Keep dust, dirt, and other foreign materials that can be drawn into the machine to a minimum. Failure to observe these precautions can lead to excessive operating temperatures and nuisance shut-downs. Read the section, "High Frequency Interference Protection" before planning the installation.

STACKING

Square Wave TIG 355s may be stacked two high. The bottom machine must be on a stable, hard, level surface. Be sure that the two pins in the roof of the bottom machine fit into the holes in the base of the top machine.

LIFTING

WARNING

CYLINDER MAY EXPLODE if damaged.

• Do not lift the welder with a cylinder attached.

The Square Wave TIG 355 weighs 510 lbs. (232 kg) without a gas cylinder. Lift the machine by the lift bail only. Never lift the machine with a cylinder attached.

TILTING

Place the machine on a secure, level surface or on a recommended undercarriage. Any surfaces you place it on other than the ground must be firm, non- skid, and structurally sound.

HIGH FREQUENCY INTERFERENCE PROTECTION

The spark gap oscillator in the high frequency genera- tor, being similar to a radio transmitter, can be blamed for many radio, TV and electronic equipment interfer- ence problems. These problems may be the result of radiated interference. Proper grounding methods can reduce or eliminate radiated interference.

The Square Wave TIG 355 has been field tested under recommended installation conditions. It complies with FCC allowable limits for radiation. For convenience, a certificate of compliance is packed with the welder. It can be used to prove FCC RF Energy Radiation Limits compliance if necessary. (It is the owner's responsi- bility to obtain this certification.) The Square Wave TIG 355 also complies with NEMA standards for high fre- quency stabilized power sources.

Radiated interference can develop in the following four ways:

1.Direct interference radiated from the welder.

2.Direct interference radiated from the welding leads.

3.Direct interference radiated from feedback into the power lines.

4.Interference from re-radiation of “pickup” by ungrounded metallic objects.

Keeping these contributing factors in mind, installing equipment per the following instructions should mini- mize problems.

1.Keep the welder power supply lines as short as possible and completely enclose them in rigid metallic conduit or equivalent shielding for a mini- mum distance of 50 feet (15.2m). There should be good electrical contact between this conduit and the welder. Both ends of the conduit should be connected to a driven ground and the entire length should be continuous.

2.Keep the work and electrode leads as short as pos- sible and as close together as possible. Lengths should not exceed 25 ft (7.6m). Tape the leads together when practical.

SQUARE WAVE TIG 355

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Contents Square Wave TIG Safety Electric Shock can kill Cylinder may explode if damaged Précautions DE Sûreté Thank You Table of Contents Section E Section CSection D P196 SeriesInstallation Technical Specifications Square Wave TIGSelect Suitable Location Safety PrecautionsHigh Frequency Interference Protection Input Supply Connection Input ConnectionsGround Connection Electric Shock can killReconnect Procedure Figure A.2 Input Supply ConnectionsVolt/Freq Nameplate AWG Copper Cond Table A.1 Recommended Input Wire and Fuse SizesTable A.2 Recommended Input Wire and Fuse Sizes Volt/Freq AC Output AWG Copper CondLengths up to 100 to 200 ft 200 to 250 ft Output ConnectionsTIG Torch Connection 100 ft 30 m 30 to 61 m 61 to 76 mStick Electrode Cable Connection Safety Instructions Operating InstructionsGeneral Description Operational Features and ControlsDesign Features and Advantages Recommended ProcessesWelding Capability LimitationsControls and Settings Upper Case Front ControlsHigh Frequency Switch Mode SwitchSTEP/4-STEP Switch Upper Case Front Control PanelAC Wave Balance VOLTS/AMPS SwitchPeak Current Control Auto Balance LEDPulse Controls Spot ControlsStart Controls Figure B.2 Status Indicator Light Sequence Square Wave TIG Crater Fill ControlsOperation Lower Case Front Controls Figure B.3 Lower Case Frontcontrols Square Wave TIGOperation Hand and Foot Amptrol Operation Operation Stick Welding Welding OperationInitial START-UP TIG Welding GuidelinesIllustrated in the 2-Step Mode for clarity Table B.1 Specific Effects of ControlsCrater Fill Switch on OFFSpot Switch OFF Start Switch onPulse Switch on Crater Fill Switch on Spot Switch onTable B.2 Typical Current RANGES1 for Tungsten ELECTRODES2 Dcen Dcep + Unbalanced Wave Balanced WaveTable B.3 Recommended Settings for TIG Welding TIG Welding Sequence Operation 2-STEP ModeTIG Welding Sequence Operation 4-STEP Mode Polarity SwitchOverload Protection Auxiliary PowerALL Machines Accessories OPTIONS/ACCESSORIESMaintenance Input Power Factor Capacitor Discharge ProcedureRoutine and Periodic Maintenance Figure D.2 General Component Locations Troubleshooting Guide General Machine TroubleTroubleshooting Guide Stick Welding Symptom Cause and RemedyTroubleshooting Guide TIG Welding TIG Welding Lower Panel Controls Accessories K870 Foot Amptrol or K963 Hand AmptrolDiagrams Dimension Print Square Wave TIG355 Equipment Installation Certification Equipment MANUFACTURER’S CertificationPage Precaucion Aviso DE
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