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ELECTRICAL INSPECTION, DIAGNOSIS, REPAIR
AFCIs ARC FAULT CIRCUIT INTERRUPTERS
ALUMINUM WIRING HAZARDS & REPAIRS
AMPS VOLTS DETERMINATION
AMPERAGE MEASUREMENT METHODS
APPLIANCE EFFICIENCY RATINGS
BACKUP ELECTRICAL GENERATORS
BACK-WIRED ELECTRICAL DEVICES
BOOKSTORE - ELECTRICAL
CIRCUIT BREAKER SIZE for A/C or HEAT PUMP
DEFINITIONS of ELECTRICAL TERMS
DIRECTORY OF ELECTRICIANS
ELECTRIC METERS & METER BASES
ELECTRIC MOTOR DIAGNOSTIC GUIDE
ELECTRIC PANEL INSPECTION
ELECTRICAL GROUND SYSTEM INSPECTION
ELECTRICAL SERVICE DROP
ELECTRICAL SERVICE ENTRY WIRING
ELECTRICAL SPLICES, HOW TO MAKE
ELECTRICAL WIRING COLOR CODES
FIRE SAFETY Checklist, CPSC
GFCI PROTECTION,Testing GFCIs AFCIs
HEAT TAPE USAGE GUIDE
KNOB & TUBE WIRING
LIGHTING, EXTERIOR GUIDE
LIGHTING, INTERIOR GUIDE
LIGHTNING PROTECTION SYSTEMS
LOW VOLTAGE BUILDING WIRING
MAIN ELECTRICAL DISCONNECT
PHOTOVOLTAIC POWER SYSTEMS
RUST in ELECTRICAL PANELS
SAFETY for ELECTRICAL INSPECTORS
SE CABLE SIZES vs AMPS
VOLTS / AMPS MEASUREMENT EQUIP
VOLTAGE MEASUREMENT METHODS
Electric motor lubrication schedule & oiling ports:
This article explains the typical lubrication requirement for for motors found on HVAC equipment in buildings such as air conditioners, furnace or air handler blower fans, oil burner motors, well pumps, and condensate return pumps. While some motors are permanently lubricated, others require lubrication as often as annually, depending on the motor usage level.
A simple check of the motor's data tag, explained here, can give the lubrication requirements needed to keep the motor running reliably and safely.
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Permanently-lubricated electric motors: the motor has no oiling ports, has sealed lubricated bearings installed at the factory. Watch out: this motor should not be oiled. Doing so may damage the motor.
Duty-cycle based manually lubricated electric motors: these motors require maintenance according to how much they are in use (their duty cycle) and will have oiling ports, usually an open tube or an openable metal cap at either end of the motor.
Here are Beckett's (1989) recommended motor oiling intervals:
How & Where to oil an electric motor
Reader Question: where are the lubrication points for an electric motor such as the Emerson K55hxkwa-9803 ?
(July 23, 2014) Jeff Wilmsmeier said:
Can you oil a Emerson K55hxkwa-9803
Jeff I had trouble finding a manual for this fan motor online too - so I don't know the answer.
Look closely at the motor assembly. Oil ports will be obvious, often capped with a hinged cap or a hole facing up marked "OIL" on the steel body of the motor.
Or send us some sharp photos of all sides of the motor and we'll comment further.
Below we illustrate three electric motors, all happening to be found in heating furnace blower compartments.
At below left we see an electric motor that is permanently-lubricated or factory-lubricated. There are no visible oiling points. Oil points on a typical electric motor such as these furnace blower motors will be visible as a small metal cap that opens on a vertical tube that directs a few drops of proper lubricating oil onto the motor's bearing and shaft end (red arrow, below-right).
Other older electric motors may also have oiling points without the vertical lubricant directing tube, just a rubber or metal cap over the oil insertion point such as shown in our photo at below left (blue arrow).
Continue reading at ELECTRIC MOTOR NOISE DIAGNOSIS or select a topic from the More Reading links shown below.
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