Flex 130, 230, 140, 240 Installation Instructions Manual
Through Core Mounting Instructions
(SEE DIAGRAM “A”)
Step 1.Position the electric fan against the back of the
radiator, and mark the holes for mounting.(Some applications may have A/C condensers and/or transmission
coolers on the front of the radiator. Additional adjustments or modifications may be necessary for installation)
Step 2. Rotate fan blades to make sure they are free of
obstructions.
Step 3. With a small phillips screwdriver pass through
the marked holes, carefully spread the fins to allow easy passage for the nylon bolts (4 for the single fan unit, 4 for the double fan unit).
Pass the bolts through the shroud holes then twist the bolts through the radiator.
Step 4. Slide the rubber washer, then the nylon washer onto the nylon bolt and finger tighten
nylon nuts until snug.
Step 5. Once again, rotate fan blades to insure that they are free of obstruction.
OR
Radiator Support Channel Or Frame Installation
(SEE DIAGRAM “B”)
Step 1. Attach frame mounting brackets to fan using
nylon bolts, cut them to 1", use nylon nuts to secure.
Step 2. Position fan to desired location, mark holes on
radiator channels or frame.
Step 3. Rotate fan blades to insure that they are free
of obstruction.
Step 4. On the marked hole locations drill 13/64" holes.
Step 5. Secure the fan to radiator using the provided
1/4" x 1" self tapping screws.
Step 6. Check fan rotation.
Rubber Spacer
NylonNut
Nylon
Washer
Diagram A
130 & 230 140 & 240
Pusher Fans
Installation Instructions
Nylon Bolt
Model 130 - Single fan w/ thermostatic
control & A/C relay
Model 140 - Single fan w/o thermostatic
control & A/C relay
Model 230- Dual fan w/ thermostatic
control & A/C relay
Model 240 - Dual fan w/o thermostatic
control & A/C relay
rev . 09-15-05 99875 Page 1 of 3
Fan Wiring Instructions
Step 1: Locate mounting point for control
Locate a mounting point for control near inlet side of radiator. Control needs to be placed within 18"
of radiator inlet hose. You may want to mount next to radiator on fender well. Mount control using
screws provided.
Step 2: Wire the fan motors (refer to Wiring Diagram, below)
Using the bullet connectors provided, attach a length of the large diameter (12 AWG)
red
wire to the
black
motor wires at fan. Attach a length of the large diameter (12 AWG)
black
wire to the
red
motor
wires at the fan. Once the fan is in place, these will attach to the control module. If mounting the
control somewhere in the engine compartment, leave enough wire to reach the control module, but
do not connect yet.
Step 3: Connect the motor wires to the control module using the female connectors provided
(Red wire to the "M+" terminal and black wire to the "M-" terminal).
Step 4: Disconnect the negative battery lead for safety while finishing the wiring. Use the large
diameter red wire to run power directly from the battery positive (+) terminal to the "B" terminal on the
control module. Connect the fuse holder in-line with this wire, as shown, but do not insert the fuse
yet. Use the blue female, ring, and butt connectors provided.
Step 5: Use the large diameter black (12 AWG) wire to run from the negative (-) battery terminal to
the "G" terminal on the control module. Use the blue female connector and ring connector provided.
Step 6: Use the small diameter red wire (14 AWG) to connect the "+" terminal on the control module
to a positive power source.
NOTE: Attaching this wire to an ignition-controlled source will shut
off the fan when the engine is turned off. Attach this wire to an uninterrupted (always hot)
power source to allow the fan to continue running after the engine is shut off.
Use the blue
female connector and fuse taps (included) if necessary.
Step 7: (Optional) For air conditioning control (if desired) connect the "C" terminal on the control
module to the
positive
wire that triggers the A/C compressor using the small diameter green (14
AWG) wire. Using a voltmeter, determine which wire coming from the compressor is the
positive
trigger wire. Use the 3-way connector (included) to tap into this wire and send a signal to the fan
control module. The fan will cycle on and off with the A/C clutch when the A/C is turned on.
rev. 09-15-05 99875 Page 2 of 3
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