DERALE 16797 Digital PWM Electric Fan Controller Instruction Manual
- June 10, 2024
- DERALE
Table of Contents
16797 Digital PWM Electric Fan Controller
Product Information
The PWM Electric Fan Controller (part #16797) is a kit that includes a PWM Fan Controller, a sensor pre-wired to the controller, a 50 Amp Circuit Breaker, six #10 Sheet Metal Screws, a 2ft 10 AWG Red Wire, a Yellow Butt Connector, two Yellow 5/16 Ring Terminals, two Yellow #10 Ring Terminals, two Blue Wire Tap Connectors, and four 4 Wire Ties.
The controller has a maximum capacity of 70 amps and can operate multiple fans
with a combined maximum amperage of up to 70 amps.
The kit comes with a 50 amp auto resetting circuit breaker to protect the
fan(s) and controller circuit. The controller requires a clean signal and
thus, the positive and negative wires feeding the fan controller MUST be
connected directly to the vehicle’s battery. The unit is equipped with an
aluminum temp sensor that reacts 50% quicker than previous models and uses 3M
double stick tape to adhere right to the radiator tank.
Product Usage Instructions
- Read the installation instructions completely before beginning installation.
- Gather all the tools needed for installation, including a drill, 5/32 drill bit, multimeter/test light, standard screwdriver, 5/16 nut driver, standard screwdriver (1/8 wide blade), wire stripper, and wire crimping tool.
- If installing dual fan applications, know your fan(s) amp draw before installing. If fan(s) exceed 70 amps, all warranty will be void.
- Connect the positive and negative wires feeding the fan controller directly to the vehicle’s battery.
- If installing fan(s) exceeding 50 amps in total, use a fuse or circuit breaker suitable for your system’s amp draw.
- If the vehicle’s battery is located more than 5 feet from the fan controller, contact the technical support team for more information on using a larger 6 gauge wire.
- Ensure that the surface of the radiator tank is absolutely free of dirt, oil, peeling paint, or any contaminants before adhering the temp sensor using the 3M double stick tape.
- Use the override circuit (Green Wire) to ramp up the electric fans to 60% running speed when activated. As the engine temperature increases, the fans will increase accordingly.
- Make sure to use quality crimpers to make all crimp connections. After each crimp has been completed, tug wires to ensure there is no movement within the connector.
- Ground connectors are crucial. If grounding to chassis, do not use self-tapping screws as they tend to loosen over time.
- The PWM fan controller is designed with a cool-down function that will allow the electric fan(s) to run for 20 seconds after the vehicle has been turned off.
INSTALLATION INSTRUCTIONS
PWM ELECTRIC FAN CONTROLLER
PART # 16797
Please read these instructions completely before beginning installation
KIT CONTENTS
- QTY. DESCRIPTION
- 1 PWM Fan Controller
- 1 Sensor (Pre-wired to controller)
- 1 50 Amp Circuit Breaker
- 6 #10 Sheet Metal Screw
- 1 2ft 10 AWG Red Wire
- 1 Yellow Butt Connector
- 2 Yellow 5/16” Ring Terminal
- 2 Yellow #10 Ring Terminal
- 2 Blue Wire Tap Connector
- 4 4” Wire Ties
TOOLS NEEDED
- Drill
- 5/32” Drill Bit
- Multimeter / Test Light
- Standard Screw Driver
- 5/16” Nut Driver
- Standard Screw Driver
- (1/8” wide blade)
- Wire Stripper
- Wire Crimping Tool
IMPORTANT NOTES
This fan controller has been completely quality control tested prior to final
packaging.
MAXIMUM CAPACITY: 70 AMPS
This controller will operate multiple fans with a combined maximum amperage up
to 70 amps. On dual fan applications, it is important to know your fan(s) amp
draw before installing, if fan(s) exceed 70 amps, all warranty will be void.
AUTO RESETTING CIRCUIT BREAKER
The fan controller utilizes a 50 amp auto resetting circuit breaker to protect
the fan(s) and controller circuit. In the event of an electrical issue, the
breaker will “trip” and open the connection between the battery and the
controller. The circuit breaker will automatically reset once the issue has
been corrected. If installing fan(s) exceeding 50 amps in total you must use a
fuse or circuit breaker suitable for your systems amp draw.
MAIN POWER CONNECTIONS
The positive and negative wires feeding the fan controller MUST be connected
directly to the vehicles battery.
This is very important because the controller requires a clean signal, do not
connect directly to the fuse panel, starter or the alternator.
VEHICLES BATTERY LOCATION
If the vehicles battery is located more than 5 feet from the fan controller,
the signal could encounter some interference or noise, which causes a dirty
signal. In some cases, a larger 6 gauge wire may be required. Please contact
our technical support team for more information.
323-266-3850 or
techsupport@usmotorworks.com
TEMP SENSOR
This unit is equipped with a newly released aluminum temp sensor that reacts
50% quicker than previous models. It uses 3M double stick tape to adhere right
to the radiator tank, therefore getting a very accurate temperature reading.
The surface preparation is critical; surface must be absolutely free of dirt,
oil, peeling paint or any contaminants to ensure a proper bond.
Important: The ideal application temperature range is 70°F to 100°F (21°C to
38°C).The minimum suggested application temperature is 50°F (10°C). At 70°F
approximately 50% of the ultimate bond strength will be achieved after 20
minutes, 90% after 24 hours and 100% after 72 hours.
OVERRIDE CIRCUIT
The fan controller has an override circuit (Green Wire) available that when
activated, will ramp up the electric fans to 60% running speed. As the engine
temperature increases the fans will increase accordingly.
WIRE CONNECTIONS
Crimp connections are critical to the function of this controller, please
ensure that all connections are made using quality crimpers. After each crimp
has been completed, tug wires, there should be no movement within the
connector. Ground connectors are crucial. If grounding to chassis we do not
recommend using self tapping screws as they tend to loosen
over time.
COOL DOWN FUNCTION
This PWM fan controller is designed with a cool down function that will allow
the electric fan(s) to run for 20 seconds after the vehicle has been turned
off.
FAN CONTROLLER INSTALLATION
- Choose a convenient location, preferably along the vehicles core support near the battery. Take in to consideration sensor placement & wire routing requirements. Avoid mounting near HOT engine components or a location that would be in direct contact with any road debris.
- Using the fan controller as a template, mark and drill four 5/32” holes in the proper location.
- Using four #10 sheet metal screws supplied, secure the unit in place.
CIRCUIT BREAKER MOUNTING
- Choose a convenient location for the circuit breaker that is between the fan controller and the battery.
- Using the circuit breaker as a template, mark and drill two 5/32” holes in the proper locations.
- Using the remaining two #10 sheet metal screws supplied, secure the circuit breaker in place.
SENSOR INSTALLATION
- Determine the desired mounting location of the sensor, somewhere on the radiator near the water inlet. (See Diagram #1)
- Route the path of the sensor wires from the controller to the radiator. If necessary, you can lengthen or shorten the wires using an automotive grade 22-gauge wire.
- Once you have routed the wires and have the sensor location chosen, clean and dry the area with alcohol, making sure there is no left over residue.
- Remove the Red 3M backing paper from the sensor and install the sensor in the desired location, applying firm pressure for at least 15 seconds.
Diagram #1
NOTE: This unit uses 3M double stick tape to adhere right to the radiator
tank, therefore getting a very accurate temperature reading. The surface
preparation is critical; surface must be absolutely free of dirt, oil, peeling
paint or any contaminants to ensure a proper bond.
The Ideal application temperature range is 70°F to 100°F (21°C to 38°C).The
Minimum suggested application temperature is 50°F (10°C). At 70°F
approximately 50% of ultimate bond strength will be achieved after 20 minutes,
90% after 24 hours and 100% after 72 hours.
WIRING
Before starting, disconnect the negative (-) cable on the vehicles battery.
Using the electrical connectors and wire ties provided, follow the
instructions below.
WARNING: The positive and negative wires feeding the controller MUST be connected directly to the vehicles battery. This is very important because the controller requires a clean signal, do not connect directly to the fuse panel, starter or the alternator. Improper installation will void the warranty.
- Using a yellow 5/16” ring terminal & 10 AWG Red Wire supplied, connect one end of the Red Wire to the vehicles positive (+) terminal on the battery.
- Route the 10 AWG Red Wire now connected to the battery to the circuit breaker previously installed and cut the wire to the appropriate length.
- Using a yellow #10 ring terminal, connect the 10 AWG Red Wire to the “BAT” (Copper Colored) terminal on the circuit breaker.
- Using a yellow #10 ring terminal, connect the auxiliary side “AUX” (Silver Colored) of the circuit breaker to the length of 10 AWG Red Wire of the controller wire harness.
- Using a Yellow Butt Connector connect the Blue Wire from the controllers wire harness to the Positive Wire(s) of the Electric Fan(s) being controlled.
- Using the 5/16 Yellow Ring Terminal connect the 10 AWG Black Wire from the controllers wire harness direct to the batteries negative terminal.
- Connect the electric fan(s) being controlled direct to the negative stud or a good chassis ground. Use the shortest wire route possible.
- Using a Blue Wire Tap connector attach the Yellow Wire to a Positive (+) switched ignition source.
Green Wire: Override Circuit (Optional)
The green wire is designed to work in two different configurations. When used,
this will allow the electric fan(s) to be turned on regardless of the
temperature of the cooling system. The fan speed will quickly ramp up to 60%
and will operate between 60 and 100% as temperature increases and decreases.
Connect the Green wire to either option A or B below.
Note: Use of the Override is optional and not required for the PWM
controller to work properly.
- A. A/C Override – Using the blue wire tap connector provided, attach the green wire to a positive (+) 12V output on the A/C High Pressure Switch.
- B. Manual Switch Override – Attach the green wire to the 12V output on the manual switch (not provided.)
VEHICLE TESTING
- Before you start the vehicle, make sure all wires are safely zip tied and away from any moving parts.
- Start the vehicle.
- If the manual override function is being used, turn on the A/C or manual switch. Electric fan(s) will ramp up to 60%.
- Turn off the manual override or A/C function and allow the engine to warm up, fans will ramp up slowly as the vehicle warms up.
ADJUSTING THE TURN-ON TEMPERATURE
The PWM Controller is factory set at approximately 180°F. Therefore Fans
will adjust speed to maintain 180°F fluid temperature. Using the adjustment
screw on side of the controller the temperature can be adjusted to maintain
fluid temperatures from 130°F – 230°F. Follow the directions below to make
adjustments to the temperature.
Diagram #2
- Remove the rubber plug from the side of the fan controller
- Using a 1/8” blade screwdriver, follow the instructions below:
If your engine is running too cool: Turn the adjustment screw CLOCKWISE in increments of 2 FULL turns, then test before repeating.
If your engine is running too hot: Turn the adjustment screw COUNTER-CLOCKWISE in increments of 2 FULL turns, then test before repeating.
WIRE COLOR QUICK REFERENCE GUIDE
- Red Wire: Battery Positive (+)
- Black Wire: Battery Negative (-)
- Blue Wire: Fan Positive (-)
- Yellow Wire: Positive (+) Switched Ignition Source
- Green Wire: A/C Override or Manual Override 12V Positive (+)
Please direct all technical questions to our Derale tech line at 323-266-3850
Warning: Installation of accessories should only be undertaken by those with mechanical knowledge and are familiar with working on vehicles. Always use eye protection (goggles, safety glasses or shield). Park the vehicle in a well lit area, on level ground and apply the parking brake. Only work on a cold vehicle that has been sitting overnight, failure to do so will result in severe burns and injury. Before starting the vehicle, make sure no tools or any other items are left under hood that could interfere with or be drawn into moving parts of the engine. Failure to follow instructions can lead to severe damage and personal injury.
ATTENTION: If you have any technical questions about this controller please contact Derale Performance.
Phone: 323-266-3850
Email:
techsupport@usmotorworks.com
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>