Tweco 7-3448 User Manual

Page 2

Manual 0-2829 Dated 5/12/00

used and need to be taped out of the way to
prevent contacting the Negative/Plasma or
Pilot Leads.

9. Tighten the Strain Relief onto the Torch Leads.

10. Reinstall any covers removed (see WARNING).

11. Install the proper torch consumables for the Power

Supply amperage.

12. Reconnect main input power to the Power Sup-

ply and turn the unit ON.

13. Set air pressure to 60 - 70 psi (4.1 - 4.8 bar).

14. Test torch for proper operation

B. Mechanized Systems With Shielded Leads

1. Turn OFF the power supply.

2. Disconnect the main input power to the power sup-

ply.

3. Remove the existing torch and strain relief from

the power supply, removing covers as required.

4. On the RPT Torch remove the retaining nut from

the Strain Relief.

5. The Control Connector Plug must be installed per

the following:

a. Connect the Control Connector Plug to the

Power Supply.

b. Inside the Power Supply Bulkhead area, route

the Remote Control Connector end of the Con-
trol Connector Plug through the Strain Relief
Nut.

c. Continue routing the connector out the hole in

the front of the Power Supply.

d. Feed the end of the torch lead and the Strain

Relief into the hole in the unit while routing
the single black wire into the notch of the Strain
Relief.

e. Tighten the Strain Relief Nut to secure the Strain

Relief to the Power Supply.

Pilot Lead

Torch Lead

Assembly

Negative/Plasma

Lead

Control Connector

Pilot Lead

Stud

Negative/Plasma
Lead Connection

A-02844

Control (PIP) Circuit

Connectors

Shield Connectors

Control Connector

Plug

Remote
Cable
Connector

6. Connect the pilot wire (+) from the replacement

torch to the Power Supply and tighten securely.

7. Connect the Negative/Plasma Lead from the re-

placement torch to the Power Supply. Slide the
protective boot over the lead connection.

8. Connect the Control (PIP) and Shield Connectors

to the mating connectors on the Control Connec-
tor Plug.