Hypertherm HT4400 HySpeed Plasma Arc Cutting System - Manual (Page 68)

OPERATION
HT4400 Instruction Manual 4-9
2
(under lever)
2. Turn Gases On
1. Turn the supply gases on.
2. Set S1 toggle switch on the gas console to plasma gas O
2
,
or N
2
.
3. Set the Gas Select 1 lever on the gas console to the proper
plasma gas.
4. Set the Gas Select 2 lever on the gas console to the proper
shield gas. Note: If the shield gas is a mixture, set Gas
Select 2 to the non-plasma portion of the mixture. (e.g., If the
plasma gas is O
2
and the shield gas is Air, set Gas Select 2
switch to Air.)
5. Set the Valve Select thumb-wheel switch (S2) to Run.
Note: See the Cut Charts to set the plasma and shield gas
pressures.
3. Turn Power Supply On and Adjust Current & Voltage
1. Turn the main disconnect switch ON.
2. Turn on the power supply by positioning the CONTROL
POWER circuit breaker on the rear of the power supply to the
UP position. The system will automatically purge gases and
then display OK in the gas console status display window.
3. Set the current from the machine computer interface or the
remote current control console. Set the voltage from the
machine computer interface or torch-height control system.
Select the arc current and arc voltage numbers from the Cut
Charts for the type and thickness of metal to cut.
S1
Gas
Select 1
Valve
Select
S2
Gas
Select 2