ABB ACX Commissioning Instruction page 57

AO2000-Fidas24: VOC Analyzer Start-Up
VOC Analyzer Start-Up
Procedure
CI/ACX-EN Rev. D
Step Action
Turn on supply gases
Controller values
1 Select the
MENU → Diagnostic/Information → Module specific →
Controller values
The variables for the temperature regulators are indicated under this
menu item:
T-Re.D
Detector temperature
T-Re.E
Heated sample gas port temperature
The temperature values will rise slowly after the power supply is
activated.
2 Turn on instrument air, combustion air and combustion gas (H
the appropriate external pressure regulator, adjust the initial pressure to
the value specified in the analyzer data sheet.
The pressure values shown on the gas port labels and in the
"Supply Gas and Test Gas Inlet Conditions" section (see page 18)
are only typical values. Only the factory-determined values shown
in the analyzer data sheet of the analyzer module are applicable for
safe operation.
Controller values
3 In the
internal pressure regulators are indicated; set the supply gas pressures by
means of the variables:
Input
Instrument air at combustion-chamber inlet
Output
Instrument air at combustion-chamber outlet
Air
Combustion air
H2
Combustion gas (H
Random values may be displayed at first for the variables. The
values are updated for the first time approx. 30 seconds. after
selection of the menu item and thereafter approx. every 30
seconds. Pressure control continues to run in the background.
Depending on the pilot pressure setting, pressure setting times
can be long.
If the operator does not press any key for more than five minutes
while in menu operation, the analyzer switches automatically to
measuring operation to display of sample values ("time out").
4 As soon as the temperature of the detector has reached the threshold
value (150 °C) the appropriate solenoid valve in the analyzer module
automatically connects the instrument air. The vacuum and combustion
air controllers work to keep pressures at the applicable set points.
Sample gas begins to flow through the analyzer as soon as the
instrument air is connected.
5 After the pressures are at the applicable set points, the associated
solenoid valve in the analyzer module automatically starts the combustion
gas supply. The combustion gas controller attempts to establish the set
point pressure value.
ACX Analyzer System Commissioning Instruction
menu item:
menu item also the variables for the
)
2
Continued on next page
). Using
2
57