Hypertherm HyPerformance HPR400XD Auto Gas User Manual

Maintenance
5-48 HPR400XD Auto Gas – 806160
D2 should always be illuminated.
D1 illuminates as soon as the torch fires and will extinguish as soon as the
arc transfers to the workpiece. If arc transfer is immediate, the LED will not
illuminate.
If there is no arc at the torch or if the arc will not transfer:
1. Turn OFF all power to the system.
2. Remove wires from H8 (WORK) and H9 (NOZZLE) studs on the board.
3. Verify a resistance of about (≈) 5.5 kΩ between H8 and D50 (–). If the
resistance value is not correct, replace the board.
Note: Resistance value may slowly increase to the correct value due to
the capacitance in the circuit.
4. Verify a resistance of about (≈) 15 kΩ between snubber and H8.
• Theworkleadshouldnothaveanycutsorbreaks.Verifyaresistanceof1Ωorless.Theworkleadconnection
to the cutting table should be clean and have good contact to the table.
• VerifythatLED-D2isilluminated.Ifitisnotilluminated,theboardmayneedtobereplacedortheboardmay
not be receiving power.
• FirethetorchintheairandverifythatD1isilluminated.Ifitisnotilluminated,butapilotarcisestablished,the
board may need to be replaced.
• Verifyaresistanceofabout(≈)1ΩacrosstheR1resistor.
H8
WORK
H9
NOZZLE
+–
D1
D2
1Ω
5.5kΩ
15kΩ
R1
or

Hypertherm HyPerformance HPR400XD Auto Gas Specifications

General

Brand	Hypertherm
Model	HyPerformance HPR400XD Auto Gas
Category	Welding System
Language	English