03 preparations for operating – Tweco FP-82 User Manual

Page 24

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OPERATION

4-2

Manual 0-2870

4.

AC Power Indicator

Green indicator will blink ON-OFF for approximately eight
seconds and then stay ON after the ON/OFF power switch
is set to ON. Indicates operating power is present in the
unit.

5.

TEMP Indicator

Normally OFF. Yellow indicator will come ON when the
internal temperature sensors detect temperatures above
normal limits. The unit should be allowed to cool before
continuing operation.

6.

GAS Indicator

Green indicator will come ON when the input gas pressure
is set to

35 psi (2.4 bar) or higher. Indicator will be OFF

when the pressure falls below 35 psi (2.4 bar).

7.

DC Indicator

Green indicator will come ON while the torch switch is
pressed. Indicates DC output circuit is active.

C. Rear Panel Features

1. Gas Input Port

Input connection for compressed air input.

WARNING

This unit is not to be used with oxygen (O

2

).

A-02996

1

2

3

2. Primary Input Power Cable

Primary input power cable with plug.

3. Gas Pressure Regulator/Filter Assembly

Pressure regulator to adjust the input gas pressure to the
Power Supply. The pressure regulator has its own built-in
filter.

For improved filtering, other filtering packages are

available as options.

4.03 Preparations For Operating

This procedure should be followed at the beginning of each
shift:

WARNING

Disconnect primary power at the source before
assembling or disassembling power supply, torch
parts, or torch and leads assemblies.

A. Torch Parts Selection

Check the torch for proper assembly and appropriate
front end torch parts. The torch parts must correspond
with the type of operation (cutting or gouging). Re-
fer to the torch manual for proper parts selection.

B. Check Primary Input Power Source

1.

Check the power source for proper input voltage.
Make sure the input power source meets the power
requirements for the unit per subsection 2.03-A,
Specifications/Design Features.

2.

Connect the input power cable (or close the main
disconnect switch) to supply power to the system.

C. Gas Selection

Select desired single gas supply. Make sure gas source
meets requirements (refer to

subsection 3.06, Gas Re-

quirements). Check connections and turn gas supply
on.

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