Tweco 100 Ultra-Cut Plasma Cutting System with Automated Gas Control - Manual (Page 97)

ULTRA-CUT 100 XT
Manual 0-5303 OPERATION �-27
Group 3 - Inlet Pressure Faults
3-1 Plasma Gas High (>145 PSI) Reduce pressure from gas supply; defective pressure sensor (PS4).
3-2 Pilot Gas High (>145 PSI) Reduce pressure from gas supply; defective pressure sensor (PS3).
3-3 Shield Gas High (>145 PSI) Reduce pressure from gas supply; defective pressure sensor (PS1).
3-4 Shield H2O High (>145 PSI) Reduce pressure from gas supply; defective pressure sensor (PS2).
Group 4 - Proportional Valves & Solenoids Electrical Faults
4-1 Plasma High (V5) shorted Check for shorted wire harness; Replace valve
4-2 Plasma Low (V4) shorted Check for shorted wire harness; Replace valve
4-3 Pilot (V3) shorted Check for shorted wire harness; Replace valve
4-4 Shield Gas (V1) shorted Check for shorted wire harness; Replace valve
4-5 Shield H2O (V2) shorted Check for shorted wire harness; Replace valve
4-6 Vent (SOL2) shorted Check for shorted wire harness; Replace valve
4-7 Cut (SOL3) shorted Check for shorted wire harness; Replace valve
4-8 Mark (SOL1) shorted Check for shorted wire harness; Replace valve
4-9 Vent (SOL2) open Check for open connection; Replace valve.
4-10 Cut (SOL3) open Check for open connection; Replace valve.
4-11 Mark (SOL1) open Check for open connection; Replace valve.
Group 5 - Plasma High Proportional Valve (V5)
5-1 Valve open Check for open connection; Replace valve.
5-2 DPC inlet Supply pressure low Raise plasma inlet pressure; check for DMC valve not open; restriction in gas supply / hoses.
5-3 Outlet pressure too low Valve full open. Leak in plasma hose to torch; defective control valve (V5); defective pressure
sensor (PS6); DPC Control PCB
5-4 Outlet pressure low Tracking error Leak in plasma hose to torch; defective control valve (V5); defective pressure sen-
sor (PS6); DPC Control PCB
5-5 Outlet pressure too high. Valve at minimun setting. Restriction in plasma hose, torch, DPC manifold; defective control
valve (V5); defective pressure sensor (PS6); DPC Control PCB