Teledyne 4020 - Hydrocarbon analyzer - Manual (Page 49)

Total Hydrocarbon Analyzer Operation
Teledyne Analytical Instruments 33
1. Turn off the fuel at the supply cylinder.
2. Observe the fuel pressure gauge on the analyzer control panel. The
gauge indication will decay as the fuel in the line is exhausted.
When the gauge reading reaches the vicinity zero, the flame will
be extinguish as the fuel solenoid shuts off the fuel supply. The
analyzer will automatically try to re-ignite. After 5 attempts, it will
display: flame failure, check air, fuel and the flame failure LED
will be on.
3. Open the cylinder supply valve and re-ignite the flame.
4.5.2 Ignition and/or Flame Guard Circuit Failure
If the flame ignition or guard circuits do not operate as described in
the above two sections, set the instrument fuel regulator to the
recommended pressure. If still fails to ignite, proceed as directed in
Chapter 5: Maintenance & Troubleshooting.
4.6 Analyzer Operation
Although the Model 4020 has been programmed for your application
at the factory, it can be further configured at the operator level, or even
(cautiously) reprogrammed. Depending on the specifics of the
application, this might include all or a set of the following procedures:
 Setting system parameters
 Establish a security password, if desired, requiring
operator to log in
 Establish and start an automatic calibration cycle
 Routine operation
 Calibrate the instrument
 Choose autoranging or select a fixed range of analysis
 Set alarm setpoints and modes of alarm operation
(high, low, failsafe, etc.)
 Program/reprogram the analyzer
 Linearize the ranges