Changing consumable parts -12, Removal and inspection -12, Changing consumable parts – Hypertherm HD3070 Plasma Arc Cutting System w/ Automatic Gas Console User Manual
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4-12
HD3070 with Automatic Gas Console
Instruction Manual
16
OPERATION
Changing Consumable Parts
Inspect torch consumable parts before cutting for wear and damage, and replaced when needed. The PAC184 and
PAC186 torch consumable parts kits (refer to Section 6, Parts List) contain tools for removal and inspection of the
consumable parts. To remove, inspect and replace the consumables, proceed as follows. See Figures 4-5 - 4-8.
Removal and Inspection
1. Remove the shield cap and inspect shield for plugged holes or damage. To remove the shield, push on it until it
releases. Check the O-ring for wear and damage.
2. Remove the inner cap and inspect for plugged holes or damage.
3. Remove the nozzle using the removal tool. Check for wear and arcing. Also check the O-rings for wear and
damage.
WARNING
Always disconnect the power supply from the main power source before inspecting or changing the
torch parts.
• Selects the BCD code for the set- point (0 - 100%) to be set on the nine GAS FLOW SET lines. These signals
should be pulled low (common) to make them active.
• Pulls WRITE line low (common) and wait for return of a READ COMPLETE signal.
This process should occur in under 100 milliseconds. At this point the CNC controller should release the WRITE
signal. The above process should be completed for the remaining four valves.
Note:
The gas console microprocessor stores the gas flow data for each metering valve during normal
operation. If power to the gas console is removed for any reason, it will be necessary to re-send the
gas flow data from the CNC interface.
9. The CNC controller should now ensure there is no ERROR OUTPUT signal from the gas console and the
POWER INTERLOCKS OK signal is still active from the power supply.
10. The system is now ready for cutting.
Note:
Initiate the test cut and test preflow control signals from the CNC interface to purge the gas lines if the
system has been powered up, but not in use for a while. Hold each position for 5 seconds.