OPERATION
HT4400 Instruction Manual 4-3
Gas Console Controls and Indicators
PG1 Indicates the plasma gas pressure. Settings for the plasma gas pressures are specified in the
Cut Charts.
S1 Selects the use of either nitrogen or oxygen as the plasma cutting gas.
Status Displays a 2 character code to report the condition of the HT4400 system. See Status
Display Display Messages on the Gas Console later in this section. See also Error Code
Troubleshooting in Section 5.
PG2 Indicates the shield gas pressure. Settings for the shield gas pressures are specified in the
Cut Charts.
MV1 Adjusts the plasma gas cutflow pressure. MV1 and cutflow plasma pressures are specified in
the Cut Charts.
MV2 Adjusts one of the plasma gas preflow pressures. MV2 and preflow plasma pressures are
specified in the Cut Charts. .
MV3 Adjusts one of the shield gas cutflow pressures. MV3 and cutflow shield pressures are
specified in the Cut Charts.
MV4 Adjusts one of the shield gas preflow pressures. MV4 and preflow shield pressures are
specified in the Cut Charts. .
MV5 Adjusts one of the plasma gas preflow pressures. MV5 and preflow plasma pressures are
specified in the Cut Charts. .
MV6 Adjusts one of the shield gas cutflow pressures. MV6 and cutflow shield pressures are
specified in the Cut Charts.
MV7 Adjusts one of the shield gas preflow pressures. MV7 and preflow shield pressures are
specified in the Cut Charts.
Gas Select 1 Selects the plasma cutting gas (Gas 1). When the shield gas is a mixture of 2 gases, this
setting represents the plasma portion of the mixture.
Gas Select 2 Selects the shield gas (Gas 2). When the shield gas is a mixture of 2 gases, this setting
represents the non-plasma portion of the mixture.
Valve Select Chooses the active valve to adjust. Also selects Leak Test 1, Leak Test 2, Test Preflow,
S2 and Test Cutflow.
Leak Test 1 See Gas Console Valve Select Detail in Section 5.
Leak Test 2 See Gas Console Valve Select Detail in Section 5.
Test Preflow See Gas Console Valve Select Detail in Section 5.
Test Cutflow See Gas Console Valve Select Detail in Section 5.
Run In this mode, all valves are OFF initially. The valve select switch must be positioned to
RUN before sending the START command to the plasma system.
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