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
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
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
