APPENDIX A: ARGON-HYDROGEN CUTTING AND GOUGING
a-6 HySpeed HT2000LHF Instruction Manual
6
Turn Power Supply On and Adjust Voltage/Current
1. Turn the main disconnect switch ON. See Status Indicators Before Startup in Section 4.
2. Turn on the power supply by depressing the POWER ON (I) button (PB1) on the power supply. Ensure
that the green POWER ON indicator illuminates. Hold PB1 down until all of the status indicators
extinguish.
3. Set the voltage and current. Select the arc current and arc voltage settings from the Argon-Hydrogen Cut
Charts later in this section for the type and thickness of metal to cut.
MV1
FM1
S2
PG3
Adjust Preflow Gases
1. Set S2 on the gas console to Test Preflow. Verify that the
argon-hydrogen supply regulator reads 120 psi (8.2 bar).
2. Look at the flowmeter (FM1) on the argon-hydrogen
manifold and set the Preflow plasma gas flow rate % by
referring to the Argon-Hydrogen Cut Charts and turning the
argon-hydrogen flowmeter adjust knob (MV1).
3. Look at the shield gas pressure gauge (PG3) on the gas
console, and set to the Argon-Hydrogen Cut Chart
specifications by turning the shield gas adjust knob (MV4).
Note: If you have changed consumable parts or if the power
supply has been off for more than 1 hour, purge gas
lines by leaving the system in Test Preflow for 1
minute.
Adjust Cut Flow Gases and Prepare for Cutting
1. Set S2 on the gas console to Test Cut Flow.
2. Look at the flowmeter (FM1) on the argon-hydrogen
manifold and set the Cut Flow plasma gas flow rate % by
referring to the Argon-Hydrogen Cut Charts and turning the
argon-hydrogen flowmeter adjust knob (MV1).
3. Set S2 to Run after the test preflow and test operate flow
rates have been set.
The system is now ready for operation.
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