Maintenance
HPR400XD Auto Gas – 806160 5-43
Gas leak tests
Notes: The CNC screen shown below is from a Hypertherm Automation controller, using version 6 software, and
is for reference only. Other controllers should have a test screen similar to the one shown. Contact the
original equipment manufacturer for instructions on how to access the test screen needed.
See sheet 20 of 24 on schematic 013374, in this manual, for more details on the gas delivery
system.
Leak test 1 (inlet leak test)
Purpose: Tests the inlet-valve solenoids in the selection console for leaks.
Test description: The valves in the metering console (B1-B4) open to release all gas pressure to the atmosphere, then
the valves close and pressure is monitored by P3 and P4 in the selection console. The pressure will
increase if an inlet valve is leaking. Code number 14 (cut gas channel number 1 failed) or 15 (cut gas
channel number 2 failed) will be displayed if there is a leak. Code number 13 (test passed) will be
displayed if no leak is detected.
Procedure:
1. Turn ON power to the plasma system.
2. Perform Inlet Leak Check on the CNC controller.
3. Turn OFF power and then turn ON power. This will purge gases from the system.
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