ADC AD-444, Руководство по установке

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Procedure for Functional Check
of Replacement Components ________
DSI Module
Theory of Operation: Start the drying cycle. When the gas
burner ignites within the chosen trial for ignition time
(8-seconds), the flame sensor detects gas burner flame and
signals the DSI module to keep the gas valve open as long
as there is a call for heat. The DSI module will “LOCKOUT”
if the gas burner flame is not sensed at the end of the trial for
ignition period. The trial for ignition period will be repeated
for a total of three retries/trials (the initial try and two more
retries/trials). If the flame is not sensed at the end of the
third retry/trial (inter-purge period of 30-seconds), the DSI
module will “LOCKOUT” (a red L.E.D. diagnostic indicator
will flash).
An unlit red L.E.D. diagnostic indicator indicates normal
operation.
A lit green L.E.D. diagnostic indicator indicates dryer controller
is calling for heat and that all interlocks have been satisfied.