Unigas HTP90A, Инструкция по установке, использованию и обслуживанию, Страница: 38 / 60

C.I.B. UNIGAS - M039219CA
38
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The burner is now operating, meanwhile the actuator goes to the high flame position and, after some seconds, the two-stage ope-
ration begins; the burner is driven automatically to high flame or low flame, according to the plant requirements.
Operation in high or low flame is signalled by lamp N on the frontal panel.
Light oil operation
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The fan motor starts and the pre-purge phase as well. Since the pre-purge phase must be carried out at the maximum air rate, the
control box drives the actuator opening and when the maximum opening position is reached, the pre-purge time counting starts.
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At the end of the pre-purge time, the actuator is in the light oil ignition position: the ignition transformer is energised (lamp L on); the
light oil valves open. Few seconds after the valves opening, the transformer is de-energised and lamp L turns off.
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The burner is now operating, meanwhile the actuator goes to the high flame position; after some seconds, the two-stage operation
begins; the burner is driven automatically to high flame or low flame, according to the plant requirements.
Operation in high or low flame is signalled by LED N on the burner control panel.