> Efficient proportional fan speed for
radiator temperature control, fans consume
less power, less load on alternator and
> Utilizes power semiconductors to drive
(2) fans in excess of 18 amps each, a total
of 36 amps or 500 watts without contacts
arcing during turn on or turn off.
> Fan operation is delayed 12 seconds to
allow starting engine without the fans
loading the battery.
> 5 Indicators, "POWER ON", "READY",
"AIR FLOW DEMAND", (2) "FANS ON".
> Activates amber light in speedometer
when fans are ON, flashes amber indicator
when the fan fuse is open.
> Ramped fan speed to minimize voltage
drops due to high current in-rush.
> Compatible quick disconnect terminals
that match the original Pantera wire
> Rugged aluminum enclosure, can be
painted to match body color.
> Only (1) temperature sensor is required,
electrically insulated from coolant and
radiator, no galvanic action.
> Input terminal to enable fans at maximum
speed for forward mounted air conditioner
> Simplifies wiring, no wire splices, no
additional diodes needed, diodes reduce
fan motor voltage 10% and decrease air
Radiator Fan Controller with temperature sensor
Part # RFC-01
Price - $236.00 USD
(Requires adapter below)
Temperature sensor adapter plate with gasket for
factory Pantera radiator.
Part # FRA-1
Price - $35.00 USD
Temperature sensor adapter for Fluidyne
Part # 32MM-22-6
Price - $23.00 USD
The Radiator Fan Controller utilizes proportional speed control based on thermal demand of radiator, this minimizes engine temperature fluctuation for improved
engine performance. The RFC compares the coolant temperature to a reference and activates the fans at minimum speed to limit the coolant temperature to 140
degrees (F). This provides a coolant reserve that is 40 degrees less than the operating temperature of the engine. The thermostat in the engine, controls the
temperature of the engine to 180 degrees (F) by opening only enough to allow the coolant to absorb heat above 180 degrees (F). As the ambient air or engine
temperature increases, the RFC increases the fan speed to maintain a maximum radiator coolant temperature of 140 degrees (F). The only way that the engine
thermostat can accurately control engine temperature is to have a coolant reserve with a lower temperature than the engine thermostat temperature. Accurate
engine temperature control helps to lower harmful pre-detonation by keeping cylinder head temperature constant. Constant cylinder head temperature means the
ignition timing can be advanced more aggressively.
The RFC is designed to fit in the original position where the relays are located, convenient for connections to the fans, temperature sensor and wiring harness.
Independent electronic outputs for each fan provide redundant operation for reliability and simplified wiring. Even if one fan stops operating the other fan will
increase speed to compensate. The current consumption of 2 high volume fans operating at full speed is approximately 20% of a starter motor during engine
start. To alleviate the fan current at engine start, the RFC delays the fan operation for 12 seconds when the ignition key is turned on, this allows full battery
current for the starter motor. The RFC also improves the functionality of the fan indicator in the speedometer; "ON" indicates the fans are operating and
"FLASHING" indicates the fan fuse is open.
Radiator Fan Controller
The only manufacturer of electronic technology designed
exclusively for the de Tomaso Pantera
When using the Radiator Fan Controller with two Spal fans it is NOT necessary to:
> Cut holes in the hood for relief vents <
> Use blocking baffles over the the fins of the radiator outside of the fan geometry <
> Use any other coolant additive other than ethylene glycol based antifreeze <
<-- Use this fan,
click on fan image
to see details.