Azbil AUR355, Руководство пользователя

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Chapter 5. Trial Operation and Adjustment
(6) Changing the gas pressure between minimum and maximum, repeat steps (1)
to (5) to check if the main burner ignites without fail.
Handling Precautions
•
If it is necessary to repeat this test, in order to prevent an explosion, stop
all combustion equipment devices each time the test is finished, and
completely discharge unburned gas or fuel that has accumulated in the
chamber, ducts, and flues.
z
Safety shutoff check
•
Pilot ignition failure check
Close the manual gas cock. Turn on the start input of the equipment to begin
operation. After prepurge, pilot burner ignition is attempted. Since the manual
cock is closed, however, the pilot burner does not ignite and the equipment is
locked out. After confirming the above behavior, open the manual cock. Cancel
the lockout, restart the equipment, and check that the burner ignites properly.
•
Flame failure check
Close the manual gas cock while the burners are operating. After the flame failure
response time elapses, the pilot valve and main valve close and the equipment is
locked out. After confirming the above behavior, open the manual cock. Cancel
the lockout, restart the equipment, and check that the burners ignite properly.
•
Power loss (power failure) check
Turn off the power switch of the equipment during burner operation in order
to stop combustion. After waiting for a while, turn the power back on. Then,
turn on the start input, restart the equipment, and check that the burners ignite
properly.