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Shutter motor power connection

How to wire with fan

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Table fan winding&connection daigram


  • I have a Bionaire brand table electric fan.
    • It has a 3 speed fan motor.
    • The electric motor is a BM-122 Decomin brand 3 speed motor.
      • There are 6 wires:
        • Red wire.
        • Black wire.
        • White wire.
        • Yellow wire.
        • Gray wire.
        • Blue wire.
          • The motor has a 4mu 250volt capacitor.
  • This fan has an oscillating grill with independent sync motor, and timer circuit.
  • Something was wrong with the solid state circuitry (everything worked but the motor!), but a quick test of the motor indicated it does work.
  • The motor uses a start and run capacitor.
  • I decided to change controls to a simple mechanical switch and fore go for now anything beyond 3 speeds.
  • The printed circuit board shows the following connections:
    • Black wire
    • Blue wire
    • Yellow wire
      • Are respective for the:
        • High fan motor speed
        • Medium fan motor speed
        • Low fan motor speed
  • I think the gray wire goes out to the oscillator motor.
    • The Red wire is marked as Line, for the power source.
  • All wires are in continuity with each other EXCEPT RED is not with any other wire. How to Verify Fan Motor Wiring Connections
    • Checking the Motor and Capacitor Connections
    • Double check your connections using the fan wiring diagrams.
    • You should see that there is a separate motor winding for high speed.
      • The concern is that there is a capacitor for the motor.
      • So I'm thinking that the motor may have to start with the slower speeds first.
      • and not start in the high speed because the motor or capacitor has not been designed for that type of operation.

Sep 29, 2016 | Dryers

1 Answer

How do I reconnect the capacitor?


Not easy to explain. The capacitor is split, it has two values, or like two capacitors connected internally with a center tap between them. Two capacitance values, maybe 5uf and 20uf, the lower value for the fan motor and the higher for the compressor, with terminals C-common, F-fan, M-compressor.
Capacitor terminal C is the center tap and that takes 3 connections, line (power) - fan line common to capacitor, and Compressor line common to capacitor. Notice the fan and compressor have a power line not common to capacitor, just power line.
Capacitor terminal F has one wire connecting to Fan terminal C, fan may have three or four terminal writes, two for power with one power being common to capacitor connection and the other power alone, two power connection wire leads. Fan motor third line is capacitor, connects to the capacitor alone. Four wire configuration fan motor is not likely your needs. Omit or ask again for further explanation.
Compressor is similar to fan, only with a capacitance value higher than for tha fan motor. Two power leads, one straight power, the other power lead connects to the capacitor power. The third compressor lead connects alone to the capacitor.
The with is to draw a diagram and level the colors of each lead and terminal lavels too. The motors nameplate may indicate wire color code, the a-c nameplate wiring diagram may be present in the control wron wiring compartment, the goal is to find clues or to trace each wire and verify what they connect or do, take notes on your drawing.
Basically the motor has three terminals, L1 - L2 - C, or C- S-R (Common, Start,Run)

Jul 14, 2015 | Maytag Heating & Cooling

1 Answer

WIRING DIAGRAM FOR A DAYTON EXH. FAN FOR A GREENHOUSE. tHE FAN GOES TO A THERMOSTAT THEN TO ELECTEICAL BOX


So far, I cannot locate a wiring diagram for an installation. However, this is a single phase "shaded pole" motor.

For a single speed, shaded pole motor, there are only two power wires. For a dual speed motor, a third wire provides a second speed. One wire will be one side of the motor coil(s)...connected to the white power wire. The other wires are the opposite side of one or two motor coils, connected to the black power wire or through a thermostat. A thermostat is simply a temperature operated switch. An additional wire may (should) be a green "grounding" wire.

Specification Sheet from Grainger.
http://www.grainger.com/product/DAYTON-Exhaust-Fan-4C361

Installation manual.
ftp://207.99.53.68/array1/pacs/AS-BUILT/D1112-50-GLOBAL-Terminal&Container(15KV_ARC-RES-Swgr_Outdoor)/D1112-50-O&M/D1112-50%20Global/BM%20%23%20549%20Exhaust%20Fan.d20100210-u113426.pdf

Mar 23, 2014 | Dryers

1 Answer

Installed a fan the fan works the lights do not


If we're talking about a ceiling fan then the issue is with the wiring. You should have 3 wires coming off the fan. Two of them are your power wires that go to the fan motor, and the other to the light fixture. Both of these wires (usually black and blue) will be twisted together and "typically" connect to the black wire in the ceiling. Then the neutral white wire will connect to the neutral white wire in the ceiling. Then your green earth ground wire connects to the ceiling box, or to any non-insulated copper ground wires.

The only other connection is the single plug that connects the pull cord switches to the fan motor itself. If that wasn't connected correctly the fan motor wouldn't work either. I'm going to bet the issue is in the ceiling box.

Nov 24, 2012 | Dryers

1 Answer

Wiring a master flow PT6 thermostat to attic fan


I had a roofer install Master Flow PRO 3 and he did the initial wiring incorrectly. The black wire pairs were incorrectly connected and caused the fan to run 24-hours. I switched the black wires pairings and the fan shuts off if less than 100-degrees (the setting I chose) and comes on if more than 100-degrees. You may want to be sure that the black wire from the power source is connected to the black wire for the thermostat (black wire nearest the thermostat setting switch and closest to the power source wire). The black wire from the fan motor should be connected to the black wire closest to the fan motor's wire.

Aug 01, 2012 | Cars & Trucks

1 Answer

Connecting protect condenser fan motor 5 wire to dual capacitor. old fan motor has 3 wires. which wires go where?


Wiring a fan motor to a dual capacitor, the leads with the stake on's go to the fan and common.
Usually the brown with white strip goes to the middle or "C" terminal and the plain brown goes to the fan or "F" terminal the other three are power and usually use the black and red connected to the fan relay.

Jun 13, 2011 | Ruud UAKA037 Air Conditioner

1 Answer

I have a duracraft dual window fan that was disassembled for cleaning. When reassembling, the power wire became seperated at it's union with the leads to the switch. When re-wired, it runs at only one...


Many times, a simple three speed fan motor has one wire for each speed - and a "common" wire, for a total of 4 wires. The common wire is connected to one of the wires of the 2 conductor cord that plugs into the wall outlet. Each of the other three wires from the motor is connected to a separate terminal of a a four position switch (Off, Low, Medium and High speed).

The other wire from the 2 conductor cord goes to the "shunt terminal" (or common terminal) of the switch. The switch directs the power to flow from the shunt terminal to either the off position or the low, medium or high speed terminals - which power the fan motor to run at the associated speed.

What you have done was connect the wire that came off to another wire. This means that the power from the 2 conductor cord is permanently connected to one of the speed terminals - and wires of the motor. You need to unplug the fan and remove the wire that you connected. Locate the shunt terminal of the switch - it should be the one without a wire on it. Reassemble and try again.

Be careful doing this work - I hope this helped!

Aug 25, 2010 | Dryers

1 Answer

Front blower short power to ground causing 12+ volts on both power and ground wires , connecting ground wire to ground blows HVAC 40amp fuse, connecting fan power wire to ground runs fan at high speed if...


have you replaced the blower motor resistor yet,it is a printed circuit that has a floating ground.it is where the blower motor wires plug in to.if you unhook the motor wires and use your ground and hot wire on the motor it should test normal,

Jan 15, 2010 | 2001 Dodge Durango

2 Answers

Help with Thermostat Wire Connection


White from power source to white of fan. Black from power source to black (top of thermostat). Black (bottom of thermostat) to black of fan..... 120v. connections.....gs

May 18, 2009 | Electrical Supplies

1 Answer

RV AC, how to wire fan (blower) motor to capacitor.


You almost have it Look closer at the run capacitor. It has Herm, this is for the compressor, Com or C and F or Fan.

1 of your power wires is the fan speed so connect them accordingly usually black is hi, blue med, & red is low. You are "feeding" voltage to the selector switch on 1 side and coming out to the fan motor speeds.

Next you have a "Common" wire on your fan motor (this means its Common to all the other connections inside the fan motor to me. It is usually white. Connect this to the other line of power usually the Com on the capacitor unless it connects to a strip on the selector switch. But 1 of these 2 places will be the other side of your Power when plugged in. Lastly the brown it is usually the fan capicator only wire and it will connect to the fan "F" terminal on the capicator this terminal will not have any other wires connected to it.

This should make you a happy camper. Please rate me accordingly and good luck.

Mar 08, 2009 | Dometic Rooftop RV Air Conditioner

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