1. Q:The inner catheter cannot be inserted into or extracted from the outer catheter
Answer:
A. Unscrew the support screw of the installation tube, straighten the outer tube, and insert or remove the inner tube
clockwise.
B. For burner swing boilers, the burner can be swung while the boiler is cold, and the front end of the duct should
beminimized as much as possible Horizontal, then insert or withdraw the inner catheter clockwise.
C. If conditions permit, open the small air door on the side of the burner or inspect the duct inside the secondary
air duct for damage.
2. Q: Fiber optic cannot see fire
Answer:
A. Check if the quartz lenses are clean.
B. Poor combustion condition, poor detection angle, and burner coking.
C. The optical fiber is damaged or unglued and needs to be replaced.
3. Q: The flame detector probe has no switching output
Answer:
A. Verify the optical fiber's light transmission performance on site.
B. Check whether the input and output voltages are normal at the probe.
C. Check whether the input and output voltages are normal at the junction box end (connect the probe).
D. Check the correctness and reliability of the wiring inside the cable aviation plug.
E. Replace the probe.
4. Q:The flame detector probe has no analog output
Answer:
A. Check if the analog terminal output of the probe is correct.
B. Detect whether the protective fuse of each analog quantity is damaged at the probe.
C. Detect analog output cables.
5. Q:The output signal of the flame detector probe is weak
Answer:
A. Check and reset all parameters and gain.
B. Adjust the adjustment and replace the probe.
C. It is recommended that operators adjust the combustion appropriately.
6. Q: Flame detector probe alarm
Answer:
A. Check if the shield wire end connection of the flame detection channel is correct and reliable.
B. Check the power supply.
C. Power off reset.
D. Replace the probe.
7. Q: The fiber optic of the flame detector probe is very bright, but no fire can be seen.
Answer:
A. When the signal is oversaturated, the probe cannot sense the frequency. The relative distance between
the optical fiber and the probe can be adjusted.
8. Q: The flame detection probe is over temperature
Answer:
A. thicken the insulation layer around the burner.
B. Modify the bakelite joint.
C. When conditions permit, extend the length of the flame detection inner conduit.
9. Q: The low load output of the flame detector is unstable
Answer:
A. Adjust the flame detection signal appropriately when the combustion is stable
B. Adjust the air volume and wind speed so that the ignition point is not too close or too far.
10. Q: Flame detection network communication is not available or unstable
Answer:
A. Check if the local network cable wiring is correct.
B. Check for duplicate probe addresses.
C. Check if the converter terminal wiring is correct.
D. Replace the converter.
E. Reinstall the system and software.
11. Q: Flame detection "peeking"
Answer:
A. To meet the requirement of seeing fire at low loads, it is unrealistic not to "peek" at high loads because
the background flame signal at high loads is stronger than the main flame signal at low loads.
B. Multiple files can be used to set different parameters to detect different operating conditions
(remote file selection function).
C. In the DCS logic, the "AND" signal on the burner operation is used to determine whether the burner is on fire.
