ESAB MultiPower 460 Pulse Manuál s instrukcemi stáhnout pdf (Strana 36)

CONDITION ACTION

Unit Inoperative A.

No input power. Check main line (user's) switch fuses -- replace if needed.

Poor or improper input (terminal board) connections.

Defective on/off switch -- replace.

Thermal light on. Main transformer overheating. Also check for proper cooling,

proper primary hookup, or shorted turn on secondary.

Loss of primary phase. Find & replace defective fuse.

No Output -- Fan

Running

Poor or improper electrical input -- check input connections on TB.

Poor connections at output terminals/work station -- check, tighten or replace.

Main transformer overheating -- thermal switches tripped due to restricted cooling

air. Temperature light on front panel will be lit. Let unit cool down.

PC board defective or loose PC board connector(s) -- if loose, reinsert; if

defective, replace.

Limited Output or Low

Open-Circuit Voltage

Input voltage jumper links on terminal board improperly set -- check for proper

voltage.

Poor output connections. Take apart, clean, and reassemble.

Panel-Remote switch in Remote position and remote voltage pot disabled.

Erratic Weld Current A.

Welding cable size too small -- use correct cables.

Loose welding cable connection (will usually get hot) -- t ighten all connections.

Improper wire feeder setup.

PC board defective -- replace.

High Output, No

Voltage Control

PC board defective or loose -- reset and/or replace board.

Shorted I.G.B.T. - Replace I.G.B.T. and check driver PCB.

No 115 Volt ac Output

A. Circuit breaker tripped. Check 115V CB2 -- Reset.

Line Fuse Blows

When Power Source

is First Turned On

Shorted DIODE in Main Bridge -- replace.

Shorted capacitor in Capacitor Bank.

SECTION 5

MAINTENANCE

Table 5-1 Troubleshooting Guide

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 51 52

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ESAB MultiPower 460 Pulse Manuál s instrukcemi Strana 36