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Contact the Auto Cool Guy: 562-367-3225 autocoolguy@yahoo.com
Please AVOID ENDLESS EMAILS, TEXT AND VOICE MAIL
The On Line Store Page 1 below. . . .
READ THIS - HOW WE CONTROL TEMP!
The Auto Cool Guy has a better way to control engine temperature.
We use Pulse Width Modulation of your fan to control its RPM. Our sensor monitors the radiator outflow temp and adjusts the fan RPM to keep the outflow at a constant 15 to 20 degrees BELOW the thermostat temp. This way, the thermostat can regulate engine temperature. Use a laser temp gun and put the red dot on the outflow area and on a black dull surface for good results as you adjust the BLACK knob. Avoid shinny chrome surface due to temp errors. Take your time and do not rush this setting. After you have made this adjustment, you should see ROCK SOLID engine temperature. You will notice speed and motor load will effect your fan RPM - see its working.
By the way, fans with Auto Cool controllers do not KICK ON and off, leave that to the brand X controllers. Please don't tell me your Auto Cool wont KICK on.
FEATURES AND CONTROLS:
Soft Start limits inrush current with pulse width when the controller is powered up. Inrush current is a brand X controller killer when starting a fan motor from a dead stop.
A/C FAN SPEED control has a small pot on the side of the controller. When 12 volts is applied to the A/C controller pin, use a small flat blade screw driver to set this fan speed. The radiator temperature control mode will over ride the A/C fan speed automatically. If not used not a problem.
FAIL SAFE: The fail safe mode turns the fan on full RPM. The FS mode is turned on by grounding the FS pin. Use a small switch from FS to ground. You can turn FS mode on or off any time.
COOL DOWN TIMER: When you turn off the IGNIITION, the fan will keep running for a period of time to cool down your radiator and then shuts down.
FAN BUZZ: The buzz is caused by the fan blade and the armature shaft not tight.
We have found the Mark VIII fan have been reported at no buzz fans.
Our HF-125 controller runs at 7Khz to prevent the buzz but may have a high frequency tone cured by a large filter cap you see below. If your fan is brushless, use our HF controller only. The fan will vibrate at low RPM with low frequency controllers.
START ENGINE: As the motor and radiator is getting warm to hot, the fan will start turning slowly and gain RPM as the temp rises. The RPM will hold at the point of regulation set by the black knob.
OUR NEW HF-150 CONTROLLER WITH FRONT PANEL ON/OFF SWITCH - MORE POWER AT HIGH FREQUENCY SWITCHING WITH EIGHT POWER TRANSISTORS & BIG HEAT SINK! HAS SOFT START, FAIL SAFE AND A/C FAN SPEED CONTROL! USE ON BRUSHLESS OR BRUSH TYPE FANS. BASE 5 X 7 INCHES.
Darryl,
I just wanted to let you know that the HF-125 I ordered from you this summer has been absolutely great. As I said, I haul a lot, and big trailers, with my Powerstroke, and now that I'm running your controller, I'm finally getting the benefits of converting it to electric fans. All these years hauling trailers and I've been religious watching temps - I still am, but I can tell you it doesn't matter now if it is 40*f or 100*f, loaded, unloaded, headwind, no wind, 50mph or 80mph, the temperatures are stable all the time. I could not be happier with your controller. In fact, I'm so happy I just ordered a second one for one of my other trucks that I'm converting to electric fans now that I have found the proper way to control them.
Thank you so much for making a quality product.
Joanna Byrne
Lubbock, Texaseasy.
ATTENTION AUTO COOL SHOPPERS:
THE STANDARD BRASS SENSOR IS SOLD WITH ANY CONTROLLER AT NO EXTRA COST. NOT INCLUDED IF YOU PURCHASE ANYOTHER SENSOR. WITH A CONTROLLER.
WE ALSO LOWERED THE PRICE ON THE AUTO COOL 200 LOW FRQUENCY CONTROLLER. ANY QUESTIONS, GIVE US A CALL!
Full line of sensors for the Auto Cool Controllers
Copper Inline
Sensors:
If you have a PLASTIC radiator outflow port, you need use the inline copper sensor. If you use the standard brass sensor on the plastic port, it will not absorb the correct amount of heat. This will lead to a lower fan RPM that will let the radiator run hotter than normal.
The copper inline sensor can be ordered in 1.25 - 1.50 - 1.75 and 2 inch OD. Measure your hose ID for the best copper inline sensor fit. Be sure to email the diameter required.
One year warranty
on all sensors!
CALL: 562-367-3225
Standard Brass Sensor:
With each controller sold, we supply a standard brass sensor as standard.
However, if you order a Brass Plug or Copper
Inline Sensor, we do not include a Standard
Brass Sensor.
The Standard Brass sensor is mounted on the OUTFLOW port under the rubber hose. The sensor detects the outflow temperature and sets the fan RPM to keep the outflow port at a constant temperature.
If you have a radiator with plastic tanks and ports, you may want to order one of the copper inline sensor or the 3/8 inch brass plug sensor.
This sensor has a five foot twisted pair of 20 gauge wire that is connected to your Auto Cool Controller. If you add wire to the sensor line, be sure to solder the splice to avoid open failures down the road.
If you order one of the Brass Plug Sensors, please email us the size you need. 1/8 - 1/4 or 3/8 inch.
A short YouTube video on the Brass Plug sensors from the Auto Cool Guy. 1/8 - 1/4 - 3/8 NPT
Be sure to use TEFLON tape on this type of sensor
for proper seal and no leaks!
We can make you a special sensor to order. This one has an extra port for a drain.
Customer wanted to measure radiator inflow and outflow temperature with 1/2 inch ports on his radiator
The Standard Brass Sensor will form fit all out flow ports sizes! No need to tell us you want X size Standard Brass Sensor!!!!!!
We now have three Brass Plug Sensors.
1/8 inch - 1/4 inch and 3/8 inch
Be sure you tell the Auto Cool Guy the
size of the sensor you need for your
radiator. You can send an email or even a
phone call. All three have the same price.
Mount the Brass Plug Sensor close to the
outflow port if you can - on the bottom of the
radiator.
We supply extra twisted pair wire to extend
to your Auto Cool Controller.
BAD IDEA - LEADS TO
LEAKS IN RADIATOR
The guys at Brand X controller company has you stick probes into your radiator core. This can lead to leaks from vibration over time and miles.
Use only our sensor for Auto Cool, the brand X will not work!
THE STANDARD BRASS SENSOR
Here is a simple trick to raise or lower the temperature range of your controller. Running to COLD, install a resistor in SERIES with one lead of the sensor. Start with 1000 ohms to about 5000 ohms, or use a small pot to set it. Running to HOT, install a small resistor across the sensor terminals. Start with about 100,000 ohm and lower as needed. Use a small pot to adjust this and and replace with a fixed resistor. Call the Auto Cool Guy if you have any questions.