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Diagnostics and Troubleshooting

310 809480 Instruction Manual XPR300



Refer to Sequence of operation on page 207 for descriptions of XPR cutting system operations.

782

Alert

(OptiMix only)

Mix low psi-P2 The Air inlet pressure (P2) in

the torch connect console is

less than 7.58 bar (110 psi)

during a mix gas process.

Increase air pressure. None Start or set

process;

remote on-off

784

Error

Main 24 V high The 24 VDC bus is above

28 volts.

1. Remove the control-side panel from the plasma

power supply to access the 24 VDC power

supply inside.

2. Use a digital multimeter to find the presence of

24 VDC (+/- 2 VDC) across the Positive (+)

and Negative (-) terminals of the power source.

3. If the voltage is outside of the +/- 2 VDC limit,

replace the 24 VDC power supply.

4. If 24 VDC (+/- 2 VDC) is found across the

Positive (+) and Negative (-) terminals of the

power supply and the 784 diagnostic code

continues, look for 24 VDC (+/- 2 VDC) on the

control board (J1 pins 1 and 3).

5. If voltage on J1 pins 1 and 3 is absent, examine

the red and white wires. If the wiring is good,

replace the control board.

Ramp down None

Diagnostic code

number and

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