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14 American Dryer Corp. 450268-1
M. COMPRESSED AIR REQUIREMENTS
This dryer requires an external supply of air (2.5
cfm @ 80 psi [0.07 cmm @ 5.51 bar]) on the steam
models, the air is necessary to operate the steam
damper system. On both steam, as well as the gas
model, the air is necessary for the blower air jet
operation to clean lint from the impellor/fan (squirrel
cage type).
N. ELECTRIC OVEN
Electric dryers are equipped with an electric oven
located behind the control door. The electric oven
assembly consists of the electric oven box,
contactor, and heating elements. In an electric oven,
the elements heat the passing airflow entering the
tumbler. ALL ovens have kW ratings. This is the
rating of how much heat the oven can produce. The
higher the rating, the more heat.
O. SAIL SWITCH (ELECTRIC AND GAS MODELS)
The sail switch consists of a round damper plate on a lever
arm, which acts like an actuator for a microswitch. When
the air blower comes on, it draws air through the burner.
This creates a negative pressure inside the burner box, and
this negative pressure pulls in the round damper, which
activates the sail switch. If there is improper airflow, the
damper will not pull in, preventing the burner from coming
on. Improper airflow can be caused by improperly designed
exhaust ducting, where the duct run is too long or has too
many sharp bends on it. It can also be caused by a lack of
make-up air. Sail switch is located in front of the oven on
electric dryers and in the back of the burner on gas models.