Lincoln Electric 718118 Spirit II 400 - Manual (Page 116)

Section 6: Maintenance &Troubleshooting Spirit II User’s Manual
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6-10
Problem Possible Cause
Primary power has been
applied to the system, but
the manual gas console
screen is blank
1. Check power/communications CAN cable
connection on back of manual gas console.
2. Check for blown DIN rail fuse.
3. Check for 120v on pins of power/communications
CAN cable at back of the manual gas console.
The manual gas console
screen is on, but the screen
doesn't work
1. Cycle primary power to the Spirit system.
2. Check the connection of the ribbon cable that
connects the keypad to the DSP PCB in the
manual gas console.
Gas pressures will not adjust
properly
1. Wrong consumables installed in torch.
2. Loose pressure transducer cable on PC board in
the MGC.
3. Check connectors on the MGC valve associated
with the malfunction.
Low pressure error 1. Supply gas pressure(s) less than 120 psi.
Pressure error during cut 1. Supply gas pressure(s) fluctuating during cut.