Lincoln Electric PCT125M manual General Description, Installation, Electric Shock can kill

A-2 INSTALLATION A-2

GENERAL DESCRIPTION

The Magnum PCT125/PCT125M plasma torches have been designed for use on a Pro-Cut 125. All of the torches are single gas, air-cooled. The torches are supplied factory mounted to the Pro-Cut or can be bought as individual units.

The hand-held torch is available only with a 70° head. It is supplied with either a 25 ft (7.6m) or 50 ft (15.2m) cable.

Two styles of mechanized torches are available. The robotic torch features an 8” (203mm) long, 1-5/8“ (42.3mm) diameter barrel. The machine torch has a 12” (305mm) long, 1-3/8“ (34.9mm) diameter barrel with a 32 pitch gear rack. The 32 pitch gear rack can be easily substituted with a 24 pitch gear rack which is included with the machine torch. The mechanized torches are offered only with 50 ft (15.2m) cables. Included with all mechanized torches is a 25 ft (7.6m) arc starter switch assembly for triggering the Pro-Cut without the use of an interface kit.

CNC or Robotic interface kits are available as a field installed option for those customer desiring automated plasma cutting. The kits provide remote triggering, remote output control and give a signal once a cutting arc has been established.

All of the plasma torches use the same consumables. In order to operate, a torch must have an electrode, swirl ring, nozzle and shield cup. There are three cut- ting nozzles available to give optimum arc perfor- mance at low, medium and high output. A gouging nozzle is also available. Drag cutting can be done by placing a wire standoff guide on to the shield cup or by using a contact cutting attachment and contact cutting insulator in place of the shield cup.

Operation from bottled compressed air or gas cylinders is not recommended due to the large volume of gas required for plasma cutting.

INSTALLATION

WARNING

ELECTRIC SHOCK can kill.

•Only qualified personnel should per- form this installation.

•Turn the input power OFF at the dis- connect switch or fuse box before working on this equipment.

•Do not touch electrically hot parts.

•Do not operate with covers removed.

TOOLS REQUIRED:

5/16” nut driver

5/8” open end wrench channel locks

FIGURE A.1 — Torch Connections.

A. Turn off power to the Pro-Cut at the disconnect switch or fuse box. Do not proceed until the power is definitely turned off.

B. Using a 5/16” nut driver, remove the sheet metal screw which holds the access door shut on the right side of the Pro-Cut. Open the door.

C. To remove a torch from the Pro-Cut, refer to Figure

A.1 and do the following:

1.Separate the two molex connectors from torch to the Pro-Cut.

2.Using a 5/8" open end wrench, loosen and unscrew the nut securing the gas tube to the bulkhead union.

PLASMA TORCH