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E-6
TROUBLESHOOTING
E-6
PRO-CUT 55
Observe all Safety Guidelines detailed throughout this manual
STATUS BOARD INDICATORS
SYMPTOM
Machine is unresponsive immediately after
power-up.
The Air Low LED is lit
The Safety LED is flashing
The Safety LED is lit and steady
The Thermal LED is lit
CHECK
1. There is a 4 second soft start period for pre-charging the input fil-
ter capacitors. Wait until that time is up. The Power LED will light
when ready. If not, refer to the first part of this section.
1. Make sure there is at least 80 psi connected to the gas connec-
tion at the back of the machine.
2. Press the Purge button and set the regulator to 70 psi. The pres-
sure may increase when air stops flowing but this is normal. Do
not reset the pressure while the air is OFF.
3. Possible faulty Pressure Switch.
4. Possible faulty Control board.
1. Make sure there is a Lincoln torch and cable assembly connect-
ed properly to the Pro-Cut bulk head connector.
2. Check consumables for proper installation or excessive wear.
Replace if excessively worn. If not, use a piece of fine emery
cloth to remove any oxide buildup on the tip of the electrode.
1. Press the Reset button. If torch and consumables are properly
installed, the Safety LED should turn off. Normal cutting or goug-
ing can resume.
1. The machine's thermostat has tripped due to exceeded duty
cycle limits. Do NOT turn the power off. Allow the machine to
cool for 15 - 30 minutes and the thermostat will reset itself.
2. The machine's air louvers or fans are obstructed such that air
cannot flow to properly cool the machine. Remove any foreign
material that may block air flow. Blow the machine out with a
clean, dry air stream.
3. Possible faulty Control board.