Hi-Rel OPERATIONAL NOTES

When using the Inteli-Touch wall control unit to program the fan by using the light-fan-power buttons, you may notice some of the following conditions:

• Lights flickering
• Irregular blade rotation
• Motor noise

This is caused by the use of the light and fan control buttons when you are programming the fan. The use of these buttons causes brief electrical transients on the AC power sine wave and is not a problem. When programming is completed and the buttons have been released, operation will return to normal.

Occasionally, electrical transients may cause the memory of the microcomputer to default or be "scrambled". To reset the microcomputer:

1. Turn OFF power
2. Wait 3 seconds
3. Turn ON power
4. Reprogram to desired mode

Normal operation will return.

The Inteli-Touch wall control unit may feel warm to the touch. A small amount of heat is normal for the Inteli-Touch wall control unit.

THEORY OF OPERATION

The major electrical modules that comprise your Casablanca fan are,

The quiet motor operation that you expect from your fan is directly related to the AC power waveform. The Inteli-Touch wall control unit is an active electronic control that passes an uninterrupted AC sine wave to the fan continuously except during program mode. The wall control unit is utilized to provide AC waveform signals or instructions that are interpreted by the microprocessor chip on the RMM board.

The control center for the fan is the RMM board with the microprocessor chip and processor memory. The microprocessor chip interprets the instructions provided from the wall control unit. The microprocessor chip/memory then controls all fan functions. The microprocessor controls one of six separate electronic switches (known as triacs) which in turn selects one of six available motor speeds. On speed six (high speed), a triac controls the motor directly. On speed five, a triac directs current first through a voltage dropping resistor in the BFR before going to the motor. This reduces the voltage to the motor so that it runs slower. On slower speeds, other triacs progressively switch higher resistances in series with the motor. Direction of fan rotation is controlled by a relay on the RMM.

The BFR is a flexible resistor array with five series resistors with taps at the junctions. The BFR is adhered to the motor housing which acts as a sink for the heat generated by the resistors.

Light intensity and ON/OFF operation are controlled through another triac on the RMM. This triac is instructed by the microprocessor to perform in the manner of a light dimmer.

NOTE: Any time a light bulb is to be changed, the ON/OFF switch should be in the OFF position since AC power is still present at the light socket(s).