Azbil AUR890 Series, Руководство пользователя

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Chapter 5. Trial Operation and Adjustment
Handling Precautions
• If it is necessary to repeat the test, each time it is repeated be sure to stop all
the equipment first to prevent an explosion and then discharge all unburned
gas that has accumulated in the combustion chamber and exhaust flue.
(6) Change the gas pressure from the minimum to the maximum and repeat steps
(1) to (5) to check if the main burner ignites properly.
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Safety shutoff check
(1) Interlock check
While the burner is operating, simulate the operation of each interlock and
check if lock-out or shutdown occurs.
After checking, return the settings to their original values and restart the burner
to check that it ignites normally.
(2) Ignition trail failure check
Close the manual gas cock. Turn on the start input of the burner to begin
operation. After the pre-purge, an attempt is made to ignite the pilot burner.
Since the manual cock is closed, however, the pilot burner does not ignite and
lock-out occurs.
After confirming the above behavior, open the manual cock. Turn on the reset
switch, restart the burner and check if it ignites normally.
(3) Flame failure check
Close the manual gas cock while the burner is operating. After the flame failure
response time elapses, the pilot valve and main valve close and lock-out occurs.
After confirming the above behavior, open the manual cock. Turn on the reset
switch, restart the burner and check if it ignites normally.
(4) Power loss (power failure) check
Turn off the power switch during burner operation in order to stop combustion.
After waiting for a while, turn on the power switch again.
Then, turn on the start input, restart the burner and check if it ignites normally.