Hypertherm HT2000-200 Volt - Manual (Page 99)

6-4 HySpeed HT2000
Instruction Manual
OPERATION
19
Front Panel Controls and Indicators (cont.)
Gas Console (Fig. 6-2)
• N
2
Air / O
2
Toggle Switch
(S1)
Selects the use of either nitrogen, air or oxygen as the plasma cutting gas.
• N
2
/ Air
Pressure Gauge
(PG1
)
Indicates the nitrogen or air plasma inlet pressure. Gas inlet pressures are specified in
Cut Charts
.
• N
2
/ Air
Flowmeter
(FM1)
Indicates the percentage rate of nitrogen or air plasma gas flow. Nitrogen or air flow rate % is specified in
Cut Charts
.
•
N
2
/ Air
Preflow
Metering Valve
(MV2)
Adjusts nitrogen or air plasma gas flow rate % while in
Test/Preflow
mode. Preflow plasma gas flow rate
percentages are specified in
Cut Charts
.
• O
2
Pressure Gauge
(PG2)
Indicates the oxygen plasma inlet pressure. Gas inlet pressures are specified in
Cut Charts
.
• O
2
Flowmeter
(FM2
)
Indicates the percentage rate of oxygen plasma gas flow. Oxygen flow rate % is specified in
Cut Charts
.
• O
2
Preflow
Metering Valve
(MV3)
Adjusts oxygen plasma gas flow rate % while in
Test/Preflow
mode. Preflow plasma gas flow rate
percentages are specified in
Cut Charts
.
• PLASMA Cut Flow
Switch
(S3)
Adjusts nitrogen, air or oxygen plasma gas flow rate % while in
Test Cut Flow
mode.
Cut Flow plasma gas flow rate percentages are specified in
Cut Charts
.
• Test Preflow/Run/Test Cut Flow
Toggle Switch
(S2)
Test Preflow
– This test position is used when setting the plasma preflow flow rate on the flowmeter. In this
position the contactor is disabled, so that current is not delivered to the electrode and the arc cannot be
fired.
Test Cut Flow –
This test position allows the selected plasma gas flow rate to be adjusted on the flowmeter
for cutting conditions. In this position also, the contactor is disabled so that current is not delivered to the
electrode and the arc cannot be fired.
Run –
This position enables the contactor and the subsequent firing of the arc after the gas rates have
been set in the
Test Preflow
and
Test Cut Flow
positions.