Additional Functions of E0873
Air Flow Kit P/N B10012
Airflow operation:
The E0873 control board can be set-up to run an airflow kit for reducing condensation
buildup in the tubes. Note: A separate airflow kit must be added to the tube system for
this function to operate. The airflow function runs the pressure turbine motor on a
larger 24VAC transformer. The airflow function is triggered five minutes after the
customer has sent the carrier inside or the teller has recalled the carrier. The airflow
function is signaled by a LED light on the control board labeled “Airflow”. When this
LED is on, the airflow relay should be energized. When this relay is energized, the
120VAC power and neutral are disconnected from the pressure motor and the 24VAC
power and neutral are connected. The airflow operation will be automatically
interrupted if the tube system is activated.
The airflow function can be turned on or off depending on the weather and need.
1) Recall the carrier to the customer unit. (Make sure customer door is open)
2) Press and hold the carrier recall button (SW4) on the control board while
pressing the customer send button on the customer unit.
The airflow LED indicator will flash to indicate if the airflow function is on or off.
One flash = ON, Two flashes = OFF
Note: to toggle the function on and off, both SW4 and customer send must be released.
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