Справочник ПользователяСодержаниеMaster TOC6Safety2Section A Installation9Section B Operations23Section C Accessories45Section D Maintenance55Section E Theory of Operation59Section F Troubleshooting & Repair65Symptoms68No wire feed when gun trigger is activated. The digital meter does NOT light. The drive rolls do not...68No wire feed when gun trigger is activated. The drive rolls do not turn. The digital meter does light...69The wire feed “coasts” when the gun trigger is released.70The gas solenoid does not activate when the gun trigger is closed. The wire feeds and arc voltage is pre-sent.70The gas solenoid stays open after the gun trigger switch is released.70The wire feeds when the gun trig-ger is activated, but there is no arc voltage.71The SET speed is adjustable and steady. The actual speed is uncontrollable. The meter displays the...72The SET speed is adjustable and steady. The actual speed reading is incorrect and/or erratic.72The SET speed is erratic or not adjustable over entire range of con-trol. The actual speed is also erratic...73The wire continues to feed with the gun trigger open, and the wire is electrically "hot." The interlock...73The wire feeds when the interlock switch is in the "ON" position. No welding or gun trigger activation.74With the interlock switch in the "ON" position, the wire feed stops when the gun trigger is released.74The SET voltage is erratic or not adjustable over the entire range of control. The actual voltage is also...75The field fuse (F101), located on the power PC board, repeatedly fails.75Circuit breaker (3 amp) repeatedly trips when the gun trigger is acti-vated.76Circuit breaker (3 amp) trips when power is applied to the LN-9 GMA. Gun trigger is NOT activated.76The 1/8 amp fuse on the voltage PC board repeatedly fails.77The LN-9 GMA shuts down while welding. Upon retriggering the gun, the unit will weld again for a period of time.78When the gun trigger is activated the drive rolls turn, but the wire will not feed or wire feeding is rough.79The welding arc is variable or "hunting."80Poor arc striking with sticking or "blast offs." The weld bead may also be ropey and display weld porosity.81The arc is unstable or oscillating.82The SET and actual speed meter readings match within a few IPM, but both are in error.83SET speed and actual speed meter readings do NOT match within a few IPM. One or both readings may be erratic.83SET volts and actual volts readings match within a few tenths of a volt while welding. However, both readings are inaccurate.84The actual volts reading does NOT match the SET volts reading within a few tenths of a volt while welding.84The output voltage is too low to start the weld.85Voltage seems to be too high or the arc flares at the start of weld. Welding is good.86The arc voltage appears to rise too slowly or stubs or blasts at the start of a weld. Once started the welding...87Section G - Electrical Diagrams135Размер: 1,7 МБСтраницы: 144Язык: EnglishПросмотреть