Flex-a-Lite 310 User manual

Nylon
Washers
Nylon Bolts
Twin-Line Reversible Fans
Part #310 & 320
Model 310 - Dualfanw/thermostaticcontrol&A/Crelay
Model 320 - Dualfanw/othermostaticcontrol&A/C relay
Setting Pull or Push Configuration:
At the factory, the Twin Line Fan is assembled to pull air. To push air,
remove the clips that hold the fan blades onto the motor shaft and turn
the fan blade over. Fasten the clips to the motor shaft. Important: See
wiring diagram, correct wiring must correspond with push or pull con-
figuration.
Installation Instructions
Through Core Mounting Instructions
(SEE DIAGRAM “A”)
Diagram A
Step 1: Position the electric fan against the radiator, and mark
theholesformounting.(SomeapplicationsmayhaveA/C
condensersand/ortransmissioncoolersonthefrontofthe
radiator.Additional adjustmentsormodificationsmay
benecessaryforinstallation).
Step 2: Rotate fan blades to make sure they are free of
obstructions.
Step 3: WithasmallPhillipsscrewdriver,passthroughthe
markedholes,carefullyspreadingthefinstoalloweasy
passageforthenylonbolts.Passtheboltsthrough the
shroudholes thentwisttheboltsthroughtheradiator.
Step 4: Slidethe washer onto the nylon bolt and push on the
pushnutsuntilsnug.
Step 5: Onceagain, rotate fan blades to insure that they are
freeof obstruction.
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Push Nuts

Fan Wiring Instructions
Step 1: Locate mounting point for control
Locatea mounting point for control near inlet side of radiator. Controlneeds to be placed within 18" of
radiatorinlet hose. Youmaywanttomount next to radiatoronfenderwell.Mount control using screws
provided.
Step 2: Wire the fan motors (refer to wiring diagram, below)
Usingthebulletconnectorsprovided,attacha length of the large diameter (12AWG) red wiretothe red
motor wires at fan. Attach a length of the large diameter (12AWG) black wire to the black motor wires at
thefan. Once the fan is in place,thesewillattachtothe control module. If mounting the control some-
wherein the engine compartment,leaveenoughwireto reach the controlmodule,butdonot connect yet.
Note: Forpusher configuration, fan blades must beflipped over (see page 1)and wiring to motors
reversed(large red to black motor wires, black to red motor wires).
Step 3: Connectthemotorwirestothecontrolmodule using supplied female connectors
(Redwiretothe"M+"terminalandblack wire to the "M-" terminal).
Step 4: Disconnectthenegative battery lead for safety while finishing thewiring. Usethelargediameter
red wiretorunpowerdirectlyfromthebatterypositive(+)terminaltothe"B"terminalonthecontrol
module. Connectthe fuse holder in-line with thiswire,asshown,butdo not insert the fuse yet. Use the
bluefemale, ring, and buttconnectorsprovided.
Step 5: Usethelarge diameter black (12AWG)wireto run from the negative (-)batteryterminal to the
"G"terminal on the control module. Use the blue female connector and ring connector provided.
Step 6: Usethe small diameter red wire(14AWG) to connect the"+" terminal on the control moduleto a
positivepower 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
connectorand fuse taps(included) if necessary.
Step 7: (Optional) For airconditioningcontrol (if desired) connect the "C"terminalon the control module
tothe positive wirethat triggers theA/Ccompressor using the smalldiameter green (14AWG) wire.
Usinga voltmeter, determine which wirecoming from the compressor isthe positive trigger wire. Use
the3-wayconnector(included)totapintothiswireandsendasignaltothefancontrolmodule. Thefan
willcycle on and offwith theA/C clutch when theA/Cis turned on.
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Step 8: (Optional)For manual switchoperation,use Flex-a-lite p/n 31148. Connect the switch as shown
onthewiring diagram (previous page). Connect the "M"terminalon the control module to the "#1"
terminalonthe switch. Connect the "#2" terminal ontheswitch to a positive 12v power source. Connect
terminal"#3"on the switch to a goodground(for switch illumination). NOTE: To prevent thermostatic
activation (if only manual switch operation is desired), omit the lead to the "+" terminal of the
control box. "B", "G", "M+" and "M-" must remain connected. If not using a Flex-a-lite manual
switch, do not connect a ground wire to the switch!
Step 9: Use the zip tiesprovidedtosecurethe wires and prevent them from interfering withfanblades,
belts,and pulleys in theenginecompartment. Reconnectthebattery and insert thefuseprovided.
Step 10: Insert the temperature probe into the radiator fins
Install temp. probe near inlet hose... then install the insulator cap.
Locatetheinlethosefromtheengineto the radiator. Remove the black insulator cap and insertthe
temp.probe through the radiator fins near the inlet hose. Reinstall the black insulator cap.
Ifyou disconnected any hosesordrainedcoolantto install the fan,reconnectthehosesand refill the
radiator. Pressthe control knob (included in wiring kit) onto the control box shaft. Turnthe knob clock-
wiseuntilit stops. Starttheengineand allow it to idle. Using ahandheld temperature sensor (posi-
tionednear the inlet hose) or thevehicle'stemperaturegauge,monitorthe temperature. When the cool-
anttemp. is slightlyabovenormal(or desired temp.),turntheknob counter-clockwise justuntilthefan
turnson. Fromnow on, the fan should activateatthistemperaturesetting. Adjustas necessary to main-
taindesiredtemperature.
The Flex-a-lite Limited Warranty
Flex-a-lite Consolidated, 7213-45th St. Ct. E. Fife, WA 98424, Telephone No. 253-922-2700, warrants to the original purchasing user, that all Flex-a-lite products to be free of
defects in material and workmanship for a period of 365 days (1 year) from date of purchase. Flex-a-lite products failing within 365 days (1 year) from date of purchase may
be returned to the factory through the point of purchase, transportation charges prepaid. If, on inspection, cause of failure is determined to be defective material or workmanship
and not by misuse, accidental or improper installation, Flex-a-lite will replace the fan free of charge, transportation prepaid. Flex-a-lite will not be liable for incidental,
progressive or consequential damages. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may
not apply to you. This warranty gives you specific legal rights and you may have other rights, which vary from state to state.
The Flex-a-lite warranty is in compliance with the Magnuson-Moss Warranty Act of 1975.
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