LOKERMANN GRAND CUT 60, Руководство пользователя

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5.1
Troublesho-
oting
Principle
There are extremely dangerous voltage and power levels present inside this unit.
Do not attempt to diagnose or repair unless you have had training in power
electronics measurement and troubleshooting techniques.
A. Power lamp and temperature lamp on
1. Air flow blocked, check for blocked air flow around the unit and correct c
ondition.
2. Fan blocked, check and correct condition.
3. Unit is overheated, let unit cool down for at least 5 minutes. Make sure the unit
has not been operated beyond Duty Cycle limit, refer to technology parameters
in Section 2.
4. Faulty components in unit, return for repair or have qualified technician repair per
Service Manual.
，
B. Torch fails to ignite the arc when torch switch is activated
1. System is in SET mode change to RUN mode.
2. Faulty torch parts, inspect torch parts and replace if necessary.
3. Gas pressure too high or too low, adjust to proper pressure.
4. Faulty components in unit, return for repair or have qualified technician repair per
Service Manual.
C. No cutting output; torch activated, power source on; gas flows;
fan operates
1. Torch not properly connected to power supply, check that torch leads are
properly connected to power supply.
2. Work cable not connected to work piece, or connection is poor, make sure that
work cable has a proper connection to a clean, dry area of the workpiece.
3. Faulty components in unit, return for repair or have qualified technician repair per
Service Manual.
4. Faulty Torch, return for repair or have qualified technician repair.
D. Low cutting output
1. Incorrect setting of CURRENT (A) control, check and adjust to proper setting.
2. Faulty components in unit, return for repair or have qualified technician repair.
E. Difficult starting
1. Worn torch parts (consumables), shut off input power. Remove and inspect torch
shield cup, tip and electrode. Replace electrode or tip if worn; replace shield cup
if excessive spatter adheres to it.
5
Maintenance
&
Troublesho-
oting