Dacor CABP3, Technical Manual

Page: 38 / 159

Technical Manual - Page 36
will be on and both the LOW and HIGH LED will be off.
FAN SPEED -HIGH BUTTON
Pressing and releasing this button will select the HIGH speed for the fan. The HIGH speed LED indicator will
be on and the LOW and MEDIUM LED will be off.
CLEAN FILTER BUTTON
When the total number of hours that the fan has operated exceeds 10 hours, the FILTER CLEAN LED will be on
indicating the fan has accumulated over 10 operating hours. Pressing and releasing the FILTER button enables
this 10-hour timer to reset, and turns off the FILTER CLEAN LED. This button only becomes operational after
the FILTER CLEAN LED is on.
UP/DOWN BUTTON
This button is used to control the sleeve motor. Pressing and releasing this button will stop the fan motor and
cancel the DELAY OFF function (if selected). However, this button can carry out three different operations
to the sleeve motor.
If the sleeve motor is in its upright position, pressing and releasing this button will start the sleeve motor
and lower the vent.
Pressing and releasing this button again before the vent has lowered to its lowest position will stop the sleeve
motor. After the vent has stopped, pressing and releasing this button again will start to lower the vent until the
LOWER LIMIT switch is closed or the UP/DOWN BUTTON is pressed again.
UPPER LIMIT SWITCH
When this limit switch is closed during the sleeveʼs upward motion, the sleeve motor will be switched off. This
indicates the sleeve is in its full upright. At this instance the fan motor will automatically select HIGH SPEED.
Furthermore, the FAN SPEED buttons and the delay off button will then become operational.
LOWER LIMIT SWITCH
When this limit switch is closed during the sleeveʼs downward motion, the sleeve motor will be switched off
automatically. This indicates the sleeve is in its lowest position.
LOCKOUT FUNCTION
Pressing and holding the LOW button and the HIGH speed button for more than 0.5 seconds will select the
clean function.
**Once this function is activated, all the buttons will be disabled until this function is enabled by again pressing
and holding the two speed buttons for 0.5 seconds. This function will permit the cleaning of the unit without
accidentally activating the unit.
INITIAL POWER UP
On power up, the controller will not assume any status of the two limit switches. It is assumed that the sleeve
motor will either be in its upright position or its lowest position. If the UPPER LIMIT switch is closed, the
controller will automatically select the high fan speed and operate the fan at that speed.
On the other hand, if the lower limit switch is selected, the controller will switch off both the fan motor and the
sleeve motor. ALL LED indicators will be switched off indicating the current status of the controller.
However, if both of the UPPER LIMIT and the LOWER LIMIT switches are off, pressing and releasing the
UP/DOWN button will either raise or lower the vent depending on the mechanical set up of the vent, until
either one of the limit switches are closed. Depending on which limit switch is closed, the vent will respond
to the corresponding switch.