A-2

INSTALLATION

A-2

 

 

 

Read entire Installation Section before installing the

PYTHON.

SAFETY PRECAUTIONS

WARNING

ELECTRIC SHOCK CAN KILL.

Only qualified personnel

should install this machine.

Turn the input power OFF at the disconnect switch or fuse box and discharge input capacitors before working inside the equipment.

Do not touch electrically hot parts.

Always connect the PYTHON ground- ing terminal (located on the side of the Case Back Assembly) to a good electrical earth ground.

Turn the PYTHON Power Switch OFF when connecting power cord to input power.

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SELECT PROPER LOCATION

Place the PYTHON where clean cool air can freely cir- culate in through the rear louvers and out through the side/bottom openings. Dirt, dust or any foreign materi- al that can be drawn into the machine should be kept at a minimum. Failure to observe these precautions can result in excessive operating temperatures and nuisance shutdown of the machine.

A source of clean, dry air or nitrogen must be supplied to the PYTHON. Oil in the air is a severe problem and must be avoided. The supply pressure must be between 80 and 120 psi. The flow rate is approximate- ly 8.0 cfm (227 l/min.). Failure to observe these pre- cautions could result in excessive operating tempera- tures or damage to the torch.

STACKING

The PYTHON cannot be stacked.

LIFTING AND MOVING

Either the front or rear handles or both may be used to lift or move the machine.

DO NOT use the pull handle on the optional undercar- riage, if installed, to lift the machine. This handle is not designed to support the full weight of the machine and using it to lift the machine could cause personal injury or damage to the machine.

TILTING

The PYTHON must be placed on a stable, level sur- face so it will not topple over.

HIGH FREQUENCY INTERFERENCE PROTECTION

The PYTHON employs a touch start mechanism for arc initiation which eliminates high frequency emis- sions from the machine as compared with spark gap and solid state type high frequency generators. Keep in mind, though, that these machines may be used in an environment where other high frequency generat- ing machines are operating. By taking the following steps, high frequency interference into the PYTHON can be minimized

(1)Make sure the power supply chassis is connected to a good earth ground. The work terminal ground does NOT ground the machine frame.

(2)Keep the work ground clamp isolated from other work clamps that have high frequency.

(3)If the ground clamp cannot be isolated, then keep the clamp as far as possible from other work clamp connections.

(4)When the machine is enclosed in a metal building, several good earth driven electrical grounds around the periphery of the building are recom- mended.

Failure to observe these recommended installation procedures may cause improper function of the PYTHON or possibly even damage to the control sys- tem or power supply components.

PYTHON

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Lincoln Electric IM648-B specifications Safety Precautions Electric Shock can Kill, Select Proper Location