Install and Set Up the Plasma Power Supply
58 810470 Operator Manual Powermax65/85/105 SYNC
Inlet gas pressure requirements (while gas is flowing)
The following inlet gas pressure specifications apply for air, nitrogen, and F5 gases.
Maximum inlet pressure
Never exceed the maximum gas pressure of 9.3 bar (135 psi).
Optimum inlet pressure
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.
Keep the inlet gas pressure at the optimum range to make sure that system performance is good for
all the combinations of plasma power supply, torch lead length, and cutting and gouging processes
that you use.
Minimum inlet pressure
The following tables show the minimum inlet gas pressure requirements for each Powermax SYNC
system. Use the correct pressure for your combination of operating mode, cartridge type, and torch
lead length.
If your inlet gas pressure goes below these levels while gas is flowing, a fault condition can occur. A
pressure-related fault code on the LCD screen can be for a notification or for a condition that stops
the cutting process. Hypertherm recommends that you do the recommended steps to troubleshoot
the fault. Refer to Fault codes on page 130 and Examine the gas pressure on page 125.
Additional gas filtration installed between the gas supply and the plasma power supply can have an
effect on gas pressure and gas flow. Speak to the filter manufacturer about gas pressure
requirements. Hypertherm recommends that you install an inline pressure gauge at the gas inlet on
the back of the plasma power supply. Use this gauge to monitor the gas pressure at the plasma
power supply, after all external filtration.
WARNING
EXPLOSION HAZARD
The filter bowl in the plasma power supply can explode if the gas pressure is more than
9.3 bar (135 psi). Never use more than the maximum gas pressure of 9.3 bar (135 psi).
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