Hypertherm Powermax45 SYNC Service Manual page 25

■ Use this gauge to monitor the gas pressure during cutting and when the system is idle.
■ Make sure that the gas pressure is stable. The pressure reading on the gauge should be stable when
you go from idle to cutting and when you go from cutting to idle again.
Monitor the inlet gas supply
■ For optimum system performance, make sure that the inlet gas pressure stays between 7.6 bar – 8.3
bar (110 psi – 120 psi) while gas is flowing.
Never use more than the maximum gas pressure of 9.3 bar (135 psi).
Use a gas hose that is the correct size
■ Make sure that the gas hose is the correct size for your system:
□ Use an internal diameter of 10 mm (3/8 inch) or greater for gas hoses that are less than 15 m
(50 feet).
□ Use an internal diameter of 13 mm (1/2 inch) or greater for gas hoses that are 15 m – 30 m
(50 feet – 100 feet).
Adjust the pressure manually
■ The plasma power supply adjusts gas pressure automatically, but you can adjust the gas pressure
manually if necessary. To adjust the gas pressure manually, push and hold the Mode button and turn
the adjustment knob at the same time.
■ When testing is completed, push the Mode button again to go back to the automatic settings mode.
Do a gas test to find if the output gas pressure is too low
■ Do a gas test to see if the plasma power supply's actual output gas pressure is lower than the set
pressure by more than an acceptable quantity.
The set pressure is the gas pressure that the system sets to align with the type of Hypertherm
cartridge and torch installed. Refer to
Keep a clean gas line
It is extremely important to keep a clean, dry gas line to prevent oil, water, dirt, and other contaminants
from causing damage to internal components. A clean gas line also helps you to get optimal cut quality
and consumable life.
Powermax45 SYNC® Service Manual
Do a gas test on page 27.
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Prepare to troubleshoot internal components
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