{"product_id":"armstrong-furnace-r76700980","title":"Armstrong Furnace R76700980 Motor","description":"\u003cp\u003eThe \u003cstrong\u003eArmstrong Furnace R76700980\u003c\/strong\u003e is a \u003cstrong\u003e1\/4 HP\u003c\/strong\u003e, \u003cstrong\u003e208\/240 V\u003c\/strong\u003e, \u003cstrong\u003e3-speed blower motor\u003c\/strong\u003e supplied as an \u003cstrong\u003eOEM replacement\u003c\/strong\u003e for the direct-drive blower in compatible \u003cstrong\u003eArmstrong Furnace\u003c\/strong\u003e and \u003cstrong\u003eArmstrong Air\u003c\/strong\u003e systems. The photo shows a ventilated black \u003cstrong\u003emotor shell\u003c\/strong\u003e, a silver \u003cstrong\u003eend bell\u003c\/strong\u003e with a slotted guard, a long round \u003cstrong\u003eoutput shaft\u003c\/strong\u003e, and a bundle of \u003cstrong\u003ecolor-coded speed leads\u003c\/strong\u003e that end in white \u003cstrong\u003eplug-in terminals\u003c\/strong\u003e, with the model label and barcode on top of the shell. The \u003cstrong\u003edual-voltage 208\/240 V\u003c\/strong\u003e rating means the same motor works on a 208 volt or a 240 volt supply, which is common in commercial and light-commercial buildings as well as homes.\u003c\/p\u003e\n\n\u003cp\u003eA \u003cstrong\u003e3-speed\u003c\/strong\u003e motor has extra winding taps, and each colored lead picks a different speed. The furnace control board or fan relay selects one lead for \u003cstrong\u003eheating\u003c\/strong\u003e and another for \u003cstrong\u003ecooling\u003c\/strong\u003e, and a third lead can serve as a middle speed or stay capped off. A lower speed tap produces a slower, quieter airflow, while a higher tap pushes more air across the \u003cstrong\u003eheat exchanger\u003c\/strong\u003e or \u003cstrong\u003eevaporator coil\u003c\/strong\u003e. Multi-speed \u003cstrong\u003ePSC\u003c\/strong\u003e (permanent split capacitor) blower motors of this style normally work with a \u003cstrong\u003erun capacitor\u003c\/strong\u003e, so check the capacitor against the motor label before reusing it. The \u003cstrong\u003eR76700980\u003c\/strong\u003e is an exact \u003cstrong\u003eArmstrong Furnace\u003c\/strong\u003e part number, so match it to the part number on the original motor label rather than relying on horsepower and voltage alone, since shaft length and diameter, \u003cstrong\u003erotation\u003c\/strong\u003e, \u003cstrong\u003eRPM\u003c\/strong\u003e and mounting vary between motors of the same rating.\u003c\/p\u003e\n\n\u003cp\u003eWhen the motor fails you will usually see one of a few symptoms. A motor that \u003cstrong\u003ehums but will not spin\u003c\/strong\u003e points to a failed \u003cstrong\u003erun capacitor\u003c\/strong\u003e or seized \u003cstrong\u003ebearings\u003c\/strong\u003e. A blower that \u003cstrong\u003etrips the thermal overload\u003c\/strong\u003e and then restarts points to a dirty \u003cstrong\u003eblower wheel\u003c\/strong\u003e, a clogged filter, or a motor drawing too much current. Squealing or grinding means worn bearings. Before condemning the motor, lock out power and spin the shaft by hand, then \u003cstrong\u003eohm\u003c\/strong\u003e the winding between the common lead and each speed lead and compare the readings. Replace the capacitor along with the motor on an older unit. Photograph the \u003cstrong\u003elead colors\u003c\/strong\u003e and the \u003cstrong\u003espeed taps\u003c\/strong\u003e before disconnecting anything, transfer the mounting \u003cstrong\u003eband or bracket\u003c\/strong\u003e to the new motor, and confirm the rotation matches the original so the blower wheel moves air in the right direction.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOEM Replacement:\u003c\/strong\u003e The \u003cstrong\u003eR76700980\u003c\/strong\u003e is the \u003cstrong\u003eArmstrong Furnace\u003c\/strong\u003e original-equipment blower motor, so you are matching the factory part number, not guessing from specs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e3-Speed Operation:\u003c\/strong\u003e Separate \u003cstrong\u003espeed taps\u003c\/strong\u003e let the furnace control run a different airflow for \u003cstrong\u003eheating\u003c\/strong\u003e and \u003cstrong\u003ecooling\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDual-Voltage 208\/240 V:\u003c\/strong\u003e One \u003cstrong\u003e1\/4 HP\u003c\/strong\u003e motor covers both \u003cstrong\u003e208 V\u003c\/strong\u003e and \u003cstrong\u003e240 V\u003c\/strong\u003e supplies, which simplifies stocking for service trucks.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePlug-In Lead Terminals:\u003c\/strong\u003e \u003cstrong\u003eColor-coded leads\u003c\/strong\u003e with white \u003cstrong\u003eplug-in terminals\u003c\/strong\u003e make the connection quick to transfer from the old motor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWhat are the ratings of the R76700980?\u003c\/strong\u003e It is a \u003cstrong\u003e1\/4 HP\u003c\/strong\u003e, \u003cstrong\u003e208\/240 V\u003c\/strong\u003e, \u003cstrong\u003e3-speed\u003c\/strong\u003e blower motor. Check the original motor label for \u003cstrong\u003eRPM\u003c\/strong\u003e and \u003cstrong\u003erotation\u003c\/strong\u003e before ordering.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDo I need a new capacitor?\u003c\/strong\u003e Multi-speed \u003cstrong\u003ePSC\u003c\/strong\u003e motors normally run with a \u003cstrong\u003erun capacitor\u003c\/strong\u003e. Test the existing one, and replace it if it tests weak or is not the microfarad rating on the motor label.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHow do I know it fits my furnace?\u003c\/strong\u003e Match the \u003cstrong\u003eR76700980\u003c\/strong\u003e number to the label on the motor you are removing, or contact our team with your furnace \u003cstrong\u003emodel and serial number\u003c\/strong\u003e and we will confirm it before you buy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"Armstrong Furnace","offers":[{"title":"Default Title","offer_id":67643390296242,"sku":"R76700980","price":290.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/R76700980.jpg?v=1791314002","url":"https:\/\/www.gsistore.com\/products\/armstrong-furnace-r76700980","provider":"GSIstore","version":"1.0","type":"link"}