Are There Any Electric Motor Repair Places Near Wadena

Electric Motor Troubleshooting
How to Diagnose & Repair Electric Motors on Edifice HVAC Equipment

Postal service a QUESTION or Comment about how to troubleshoot electric motors such as ac compressor motors, heating equipment burner or fan motors, swimming puddle motors, water well pump motors

InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website.

Electric motor examination & repair guide:

This article describes A/C electric motor troubleshooting: here we provide an electric motor diagnostic table, a troubleshooting guide that helps diagnose and repair virtually electric motor bug for motors constitute on HVAC equipment in buildings such as air conditioners, furnace or air handler blower fans, oil burner motors, well pumps, and condensate render pumps.

We besides provide an ARTICLE INDEX for this topic, or yous can try the page tiptop or bottom SEARCH BOX as a quick way to detect information you lot need.

A/C Electric Motor Troubleshooting Guide - Exam Procedures

Air handler blower assembly(C) Daniel Friedman In this commodity we provide a diagnostic guide to determine and repair problems with electric motors. The page top photo was taken of of an oil burner electric motor not an air conditioning blower fan motor or pump motor, but you'll see that all of these electric motors look a lot akin.

At left our photo illustrates the motor as typically plant in a direct-drive HVAC blower or air handler assembly. More than about this air handler fan i

southward at BLOWER FAN OPERATION & TESTING.

[Click to overstate whatsoever image.]

Watch out: if yous are not trained in safe electrial wiring and test tool use y'all should not fool with electrical motors or wiring. You could exist shocked or killed.

Article Series contents

Electric MOTOR DIAGNOSTIC GUIDE

A/C ELECTRIC MOTOR COMPONENTS
DMMs VOMs SAFE Apply OF
ECM MOTOR CAUSING CIRCUIT BREAKER Buzz - blower motor troubleshooting
Electric MOTOR DATA TAG
Electrical MOTOR CENTRIFUGAL SWITCH or PTC PRD - bad switch, motor won't start
Electrical MOTOR OVERHEATS - seven things to check
Electrical MOTOR RUN Direction
ELECTRIC MOTOR START SWITCH
ELECTRIC MOTOR TYPES - viii types of single stage, split up phase, ii & 3 phase motors
ELECTRIC MOTOR WON'T Kickoff / RUN - fourteen Things to Bank check
ELECTRIC MOTOR OFF on RESET
ELECTRIC MOTOR TESTS - Electric Tests to Check HVAC Blower Fan Motor or Outdoor Compressor Fan Motor Winding on Heating or Cooling Equipment or on Other Electric Motors
Electrical MOTORS, 3-Phase
Electric MOTOR LIFE
Electrical MOTOR WIRING DIAGRAMS & GUIDES

While our page tiptop photo shows the red reset button virtually clearly, the reset button on the motor at left may be harder to spot. Sometimes the reset push button on an electric motor is hard to notice, and sometimes at that place is no reset button!

Fatal Stupor Take chances Warning : Inspecting electrical components and systems risks death by electrocution besides equally serious burns or other injuries to the inspector or to others. Exercise not attempt these tasks unless you lot are properly trained and equipped.

See DMMs VOMs SAFE Apply OF for help in making safety use of electrical examination equipment before yous start poking your meter probes into anything.

Bones Components of an A/C Electrical Motor such as used on heating and air conditioning equipment

Before discussing how to diagnose air conditioner or heating system electric motors let's be sure we know what motor parts might be involved. (Or skip correct to Tabular array A if you prefer).

Becket oil burner electric motor (C) Daniel Friedman Photograph: electric motor on a modernistic oil burner.

The electrical motor has quite a few parts if examined in item, switches, wires, possibly capacitors, oiling ports and more than, merely at that place are four bones parts to every HVAC electric motor:

Electric motor rotor: the rotor follows (turns in the direction impelled by) the rotating magnetic field and thus spins the motor shaft
Electrical motor stator: the stator consists is a device or cadre containing start and run windings (of copper wire) wound around a fundamental core to create a magnetic field.
Electrical motor windings: the 2 windings are used to create an electrical field in the stator.
- Definition of Start winding: in an A/C (alternating current) electric motor electrical current flowing through the start winding is used only to go the motor spinning from a stopped condition.
  The commencement winding is disconnected, ordinarily by a centrifugal switch, when the motor is up to speed.
- Definition of Run winding: in an A/C electric motor the run winding is what keeps the motor spinning once it has started.
  Current flowing through this winding produces a rotating magnetic field in the stator that keeps the motor shaft turning subsequently the start winding has turned off.
Electric motor offset switch: a centrifugal switch connects the A/C electric power to the motor to the start winding on the stator until the motor has reached a speed typically of 75-80% of its full run speed (typically that's1725 rpm or 3450 rpm on newer high-speed oil burners).

In addition to the basic electric motor components to a higher place at that place are two other features to know nigh when troubleshooting a motor.

How to Read the Information on an Electric Motor Data Tag

Electric motor data tag for oil burner (C) Daniel Friedman In our photo at left you can run across the notation on this electric motor information tag indicating the the motor is non-reversing and rotates counter-clockwise - designated by the words CCW ROTATION (cherry arrow).

If you enlarge the photo [Click any prototype to meet an enlarged, detailed version] yous will see text above the red pointer noting that this is a NON-REVERSING motor.

See ELECTRIC MOTOR RUN DIRECTION

The bluish oval marks the motor's rotating speed - 3450 RPM - this is a high speed oil burner. Older oil burners and equipment motors run at 1725 RPM. Some HVAC equipment uses a variable-speed electric motor.

The green rectangle marks other useful data in the data tag for this motor, fabricated by Emerson Electrical in St. Louis MO. This is a 1/7 hp motor, designed for 115VAC, drawing two.35A.

These data are helpful when diagnosing electric motor problems: using a DMM or VOM we can discover unusual current depict higher up that 2.35A as a sign of problem and nosotros can cheque that the voltage level delivered by the electrical supply is shut to 115VAC threescore cycle current single phase.

The motor's model number (SD55GYJTK-5181 in this instance) is useful when replacing the motor or contacting the manufacturer for assistance.

An Electric Motor Fourth dimension Rating designation is specified as CONT (continuous duty) - this motor is able to run continuously without damage or overheating under normal conditions.

A temperature rating (40C) and other data are given besides, including an explanation that this motor is. thermally protected and that should the motor's thermal protection switch trip off the user needs to press the ruby button.

Meet ELECTRIC MOTOR OVERLOAD RESET

This motor'southward information tag besides includes oiling specifications indicating the required lubrication schedule, discussed

at ELECTRIC MOTOR LUBRICATION

Watch out: when buying replacement electrical motors, fuel units, and blower fan assemblies to exist certain they all are compatible. For example on oil fired heating equipment, the oil burner fuel units (the mechanical heating oil pump driven by the oil burner electric motor via a coupling) can be purchased as CW or CCW devices. All three components have to exist designed to rotate in a mutual management:

the electrical driving motor,
the oil burner combustion air blower fan assembly, and
the oil burner fuel unit of measurement or oil pump.

If the fuel unit of measurement is not rotated in the proper direction the heating appliance won't run - it won't receive fuel, and the driving motor and coupling parts may be damaged.

If a squirrel muzzle blower fan on an oil burner or inside of an air handler is spun backwards it volition not move much air and equipment will non role properly.

See ELECTRIC MOTOR RUN DIRECTION

Electric Motor Lubrication Specifications & Schedules: when, how much oil, where to oil

For commodity loading speed we have moved this data

to Electric MOTOR LUBRICATION

Electrical Motor Thermal Overload Switch - the Thermal Switch

Details are at ELECTRIC MOTOR OVERLOAD RESET - separate article.

Electric Motor Start Switch Operation in Electric Motors

The start switch connects power to the start winding to start the motor spinning. This feature is necessary considering depending on the position in which the rotor stopped when the motor final turned off, the rotating electrical field created by the run winding can't starting time the motor.

At CAUSES of Difficult STARTING Electrical MOTORS we explain how a failed starting capacitor OR depending on the motor design, a bad centrifugal switch tin prevent a motor from starting.

A trained service technician may sometimes diagnose a failed get-go winding or failed first switch (centrifugal switch) by spinning the motor manually (potentially dangerous!). If the motor keeps running we doubtable a bad start winding or bad offset switch (see diagnostic table details

at Tabular array A: 14 THINGS to CHECK (in order) if an A/C Electric Motor Volition Not First.

When the electric motor has reached about 75-80% of its full speed the centrifugal switch opens, thereby disconnecting Ac electrical power from the kickoff winding. Power was already connected to and remains connected to the run winding.

And so if the motor will commencement just won't continue running, nosotros suspect a bad run winding or bad wiring to the winding.

For electric motors used in near HVAC applications motor full speed is commonly 1725 or 3450 rpm, though some equipment may use variable speed motors as well. The centrifugal switch volition open ("throwout") at nearly 2800 rpm for a 3450 rpm electric motor, and the centrifugal switch will open up at nearly 1400 rpm for a 1725 rpm electric motor.

Come across more details at Electric MOTOR CENTRIFUGAL SWITCH or PTC PRD

Sparking Elecric Motor Repair

Reader Question: 12/22/2014 sparks when motor is running said:

When a table saw is turned on I see sparks... what is the cause and how to fix it

Answer:

Sparky,

Some sparking is normal within many electric motors including table saws and drills, just no sparks ought to be seen exiting the device or its motor for obvious safety reasons.

Typically when I've seen sparks spraying out of a drill or table saw I've found that the motor brushes need replacement. A burned commutator in the electric motor is often the root trouble. Some light cleaning of the commutator may be needed. Take care not to score information technology. Remove the motor armature and sand information technology with very fine emery paper. Inspect the amature while cleaning it

If you come across score or burn marks those need to exist removed - otherwise the new brushes in the motor volition non last long.
If you cannot clean the copper armature sufficiently to remove scores and burns without sanding through the copper surface completely (I'd like to see at least 1/xvi" remaining copper) and then the role needs replacement.
When you've finished cleaning the copper armature surface that contacts the motor brushes should be both shiny and very shine. Replace the motor brushes while you're at it.
When replacing the armature be SURE that y'all don't leave dust on the parts or in the bearings or you'll probably ruin the motor. While y'all're at information technology feel for side play when replacing this part - which may indicate worn-out bearings in the motor mount.

Basic Electric Motor Designs

Not all Electric Motors utilize a Starting Capacitor and/or Centrifugal Switch: here we describe (in over-simpified terms) 8 Common Electric Motor Designs.

Unmarried Phase Electric Motors

Single phase, capacitor-start, capacitor-run motors: Many unmarried-phase electric motors may utilize a start and run capacitor to become the motor running and keep information technology running smoothly. The start winding and start capacitor are cut-out every bit the motor approaches full speed.
Unmarried phase, capacitor-kickoff, capacitor-run, aux winding run motors: Some unmarried stage electric motors use a centrifugal switch to cut out the starting capacitor just keep the outset winding in employ as an aux winding equally the motor gets up to speed.
Single-stage, no centrifugal switch: Other single phase motors have no centrifugal switch. When the motor reaches it full running speed the auxiliary winding remains in utilize, causing the unit to run as if it were a two-phase motor. This is considered a particularly-reliable electrical motor blueprint.

Dissever-Phase Electric Motors

Induction electric motor starting design (C) InspectApedia.com Split-phase motors dissever a unmarried electrical current phase, sending it through 2 different windings that produce an electrical issue similar to motors run by a two-phase current source, producign a rotating electrical field to plough the motor.

Split-phase, capacitor-outset, capacitor-run electric motors crave both a starting capacitor and a smaller run capacitor. Unremarkably a centrifugal switch is used to cut-out the starting capacitor every bit the motor approaches its full running speed. The run cap remains agile.
Split-stage, capacitor-start, induction run motors apply a starting capacitor but do not use a run capacitor. Usually a centrifugal switch is used to cutting-out the starting capacitor every bit the motor approaches its full running speed.
Carve up stage, resistance-start, induction-run motors do not apply starting nor run capacitors.
In a resistance-start consecration-run electric motor, an out-of-phase condition occurs because the first-winding has higher electric resistance than the run winding. For these motors, starting torque is created past the combination of the stator'due south magnetic field strength, the rotor'southward magnetic field force, and the angle past which the two currents are out of phase with one some other.

The theoretical maximum torque would occur at 90° out of phase but actually inductive resistance differences between the thinner start winding and thicker run winding will typically produce a phase bending difference betwixt 35° and 40° - not not enough to give a strong starting torque.

Multi-Phase: ii-phase or 3-Phase Electrical Motors

Still other electrical motors utilise the rotating magnetic field produced a two-phase or 3 phase blueprint both to beginning the motor and to go along it spinning.

2-stage motors use 2 separate windings oriented at 90° from one another, "out of phase" with one another, to produce a rotating magnetic field to turn the motor.
3-stage motors use three separate windings out of phase with i some other, also producing a rotating magnetic field to spin the motor.

In a split-phase motor the stator uses 2 carve up windings: start winding (smaller diameter wire) and a run winding (larger diameter wire). The kickoff winding has college electrical resistance thanthe run-winding, and it will be close to the meridian of the stator's core.

The run winding will be located near the bottom of the stator and will have the lower resistance of the 2 windings. The 2 windings are connected electrically in parallel with one some other, as you can see in our sketch.

This type of stator tin be used in both capacitor-kickoff, capacitor run motors and in capacitor-start, induction-run motors.

The electric motor's stator contains iv electrical poles, and the start winding is always located at 90° from the run winding. As electric power is turned-on to the stator current will menstruation thorugh both the start and run winding at the aforementioned time, only because of the college resistance of the start winding, its current flow is more in-stage with the source voltage than will be the current flow through the run winding. Therefore, the current flowing through the run-winding will lag backside the current flow through the start winding (due to inductive resistance).

It is the fact that at that place are then two flowing currents that are out of phase with one another that a rotating magnetic field is created in the stator. The rotation speed of the magnetic field depends on the number of poles in the stator and the frequency of the source voltage (e.g. 60hz or 50hz). Several sources give a unproblematic formula for determining an electric motor'due south rotating speed:

Speed = 120 x Frequency / Number of Stator Poles, or S = F/P.

Using the U.South 60Hz standard, we can calculate that a 2 pole motor should spin at 3600 rpm. (Due south or 3600 = 120 x sixty / 2)

Electric Motor Diagnostic Tests

How to Check HVAC Blower Fan Motor or Outdoor Compressor Fan Motor Winding on Heating or Cooling Equipment or on Other Electrical Motors

1. Simple Electrical Motor Resistance Tests: Leads

Testing a blower fan motor winding: referring to the electrical diagram for your equipment, unplug electrical connectors at the fan motor.

Measure the resistance between each atomic number 82 wire with a multimeter or VOM. The multimeter should exist set in the X1 range.

For accuracy, don't measure out when the fan motor is hot, permit information technology to cool off.

When the resistance betwixt each lead wire are those listed in the specifications for your equipment the fan motor should exist normal.
Aught resistance or infinite resistance are indicators of a trouble .

2. Simple Electric Motor Resistance Tests: Windings

Test to determine if a motor winding (beginning winding or run winding) is not broken (open up) or shorted (airtight). This examination can be done on most household apparatus motors including both single-phase and threer-phase electric motors.

With the VOM set to the almost-sensitive resistance or ohms scale (R x i), and with the meter zeroed, cheque the resistance between the motor winding leads (you may need to check the motor's wiring diagram to exist sure you're checking in the right spot).

Normal: Y'all should see depression resistance, less than ten ohms. That's normal.
Cipher or very depression resistance: Yous should not see very depression resistance, close to zilch. That suggests a shorted widing. The motor will probably blow a fuse or trip a excursion breaker when turned-on.
Very low resistance between a motor wiring final and the motor'south metallic case, that can mean that at that place is a short betwixt a motor terminal and ground, probably through the motor's steel casing.

No resistance between the commencement and run terminals to common, merely resistance between the start and run terminals, this means that the internal motor overload protection circuit is open. In this last case, allow the motor to cool and re-examination it earlier replacing it.
Resistances over 10 ohms. If you lot encounter infinite resistance the winding has probably burned or cleaved.
Higher resistance readings probably mean that the winding is damaged while very high resistance readings or infinite resistance tell you that a winding is cleaved or "open up".

Spotter out: when measuring resistance at very low levels, a poor connection with your probe or even having your finger in the circuit will foul up the reading'south accurateness.

Watch out: some damaged motor windings will test out simply fine on the bench with the motor disconnected completely, but when the motor begins to spin a damaged wire in the winding may, due to the centrifugal force of rotation, open up, causing the motor to run poorly or to terminate completely or to chatter.

More detailed VOM tests on motor leads and windings are given in our diagnostic table establish

at Electric MOTOR DIAGNOSTIC GUIDE

At Bones Electric TESTS for BURNED OUT COMPRESSOR MOTORS nosotros give more details virtually resistance levels to wait when testing an electric motor.

3. Check electrical motor get-go / run capacitors

If your motor uses a start/run capacitor, the capacitor could be defective.

If inspection by eye shows a capacitor that is bloated, burned, plain-featured, it needs to be replaced.

If past eye the capacitor looks ok information technology might notwithstanding be defective.

With the capacitor disconnected from the motor's wiring, with your VOM probes on the cap'southward leads (test outset and common, then run and common separately if the cap is a combined start/run device) y'all volition see the resistance rise from a depression number every bit the capacitor begins to accuse, driven only by the power source in your VOM itself.

Scout out: permit the capacitor bleed-downward for 10-xv minutes before trying to repeat this test or, equally it still holds a accuse your exam will exist in-valid.

See details

at Examination a MOTOR START or RUN CAPACITOR

More electric motor diagnostic guides and downloads are

at ELECTRIC MOTOR WIRING DIAGRAMS & GUIDES

and in the REFERENCES section of this article

4. Check the Electric Motor'southward Centrifugal Switch

Centrifugal switch by Speedaire sold at Zoro.com used in some electric motors to cut out the starting capacitor when the electric motor reaches operating speed - cited & discussed at InspectApedia.com

Typically a centrifugal switch or possibly a PTC or PRD drops the kickoff capacitor from the motor's electrical circuit once the motor has spun up to operating speed, or in some designs, a mechanical centrifugal switch may be used to disconnect the starting capacitor when the motor speed has reached a critical rpm, typically near half of the motor'due south run speed.[2]

If your electric motor uses a centrifugal switch to cut out the "start" capacitor once the motor is up to speed, a failure of that switch can cause motor failure.

Diagnostic details for a centrifugal switch used on elecric motors are

at Electrical MOTOR CENTRIFUGAL SWITCH or PTC PRD

v. Check the electric motor'due south cooling fan

If your electrc motor is an "open up" design you tin see into the motor housing; expect for clots of dust and oil that may exist blocking the cooling fan and causing the motor to overheat; overheating can crusade the motor's thermal overload switch to close the motor off (and the switch may pop out waiting to absurd-down and re-set).

See details

at Electric MOTOR OVERLOAD RESET

5. Electric Motor Excursion Analysis - MCA

Excerpting from Andy Page, The BASICS of MOTOR CIRCUIT Assay [PDF] Reliable Plant, (Noria Corporation), 1328 East. 43rd Court, Tulsa, OK 74105 Tel: 800-597-5460; Email: pagea@alliedreliability.com, retrieved nine/thirteen/12, original source: http://www.reliableplant.com/Read/10686/motor-circuit-analysis, Excerpt:

MCA online [tests performed while the motor is operating] can be further split into two categories - current assay and voltage analysis.

Electric current analysis is primarily focused on the rotating components. Loose or broken rotor confined, croaky end rings, rotor eccentricity, misalignment and coupling/chugalug bug are some of the "large-hitter" failure modes detected in the current signature.

Ability quality issues like harmful harmonics, voltage imbalances and nether/over-voltages are among the issues identified with voltage analysis.

MCA offline is most famous for the resistance-to-ground measurement. Just other measurements make motor circuit defects easy to find.

Measuring electrical characteristics similar impedance, inductance and capacitance tell the annotator plenty about the condition of the windings.

Inductance is a great indicator of plough-to-plough shorts. Capacitance to ground measures the amount of winding contagion (h2o, dirt, dust, etc.).

Changes in each of these affect impedance (total resistance of an AC circuit). These characteristics are measured stage to phase and phase to ground and compared to each other and to percent change from baseline to identify motor circuit defects.

Motor circuit analysis (MCA) is oft and easily dislocated with motor current analysis (MCA), which is an abbreviated version of motor electric current signature analysis (MCSA).

Repair Article Recommendations past System Type

Air-conditioning or heat pump systems: to locate the various controls and switches for A/C or heat pump systems
see CONTROLS & SWITCHES, A/C - HEAT PUMP.

Too see THERMOSTATS, HEATING / COOLING.
Heating systems: If you lot are looking for the main burner reset pushOn heating equipment you lot'll want to
see: Aquastat Functions

and Cad Cell Relay Switch Flame Sensors (hot water boilers and some water heaters),

STACK RELAY SWITCH On older oil fired boilers and furnaces,

FLUE GAS SPILL SWITCH TRIPPING & RESET (gas fired equipment), and

LOW WATER CUTOFF CONTROLS On steam heating systems.

Condensate pump motors on steam heating systems are also discussed

at CONDENSATE Return PIPES, PUMPS, STEAM
Thermal overload relays on electric motors used on air conditioning, heating, water supply and other building equipment may shut off an overheated motor and (if not automatic) may require a manual reset.
See ELECTRIC MOTOR OVERLOAD RESET SWITCH caption (how to reset a motor off on reset).
Water supply systems: Controls on well pumps and water supply equipment that may require reset or repair are discussed
at CONTROLS & SWITCHES on WATER TANKS.

Working with unmarried phase vs. three-stage electric motors

Reader comments on single stage & 3 Phase motors

Most single phase motors have two sets of windings.

The main or primary windings are directly connected to the ability lines while the motor in running. The second windings are ordinarily thinner wires physically offset from the main windings inside the motor.

The purpose of the secondary windings is to provide directional information and an initial stiff boot to go the motor started turning. One time the motor is started, the main or primary windings can keep the motor running just fine.

Less common, these secondary windings are directly powered from the power lines through a run capacitor that provides a continuous time or phase shift to the windings. Besides

see HOW to CHOOSE a START / RUN CAPACITOR

Far more than common, the secondary windings and capacitor are powered through a centrifugal switch that is closed for approximately one/2 second on starting.

As the motor gets up to 2/3 speed, the centrifugal switch opens and disconnects the secondary windings.

This switch is ordinarily backside and part of the connection plate where yous attach the power cables in the finish of the motor.

Whatsoever little piece of dust can keep this switch from endmost when the motor is stopped.

At this betoken, the motor but sits there and hums

see details at Humming MOTOR SOUNDS from A/C or Heat Pump system

not knowing which way to go or how to get started.

Only knocking this one trivial dust particle off makes the repair, and the motor volition run fine henceforth. Nearly of the fourth dimension you have to pull the back end of the motor off to get to this switch.

See details at Electrical MOTOR CENTRIFUGAL SWITCH or PTC PRD

Reversing the direction of the current in the secondary windings reverses the management of the motor. This can usually be done by switching the leads to the secondary windings. Sometimes one of the secondary leads is attached to a master windings and you have to dig into the windings to find information technology and split up it out.

You tin can purchase electronic phase converters to generate a third leg which work reasonably well, but generally works for but one electric motor at a fourth dimension. The converter must exist somewhat closely matched to the motor in size. It converts Air-conditioning to DC, then creates an bogus third leg electronically. This approach is almost eighty-85% effective in that you need to derate the driven motor by 15% or and so.

Yous can use whatsoever 3 stage motor to generate the 3rd leg if you can get information technology started. I have read most people using a small unmarried stage motor to go a bigger 3 phase motor going, or using a pull rope wrapped around the motor shaft to pull start the big iii stage motor.

Once running, a 3 phase motor will generate a 3rd leg which you lot can use to run other 3 phase motors. Y wound motors work much better than a Delta wound motors in this approach. This is about 65-70% constructive.

I think you can use a capacitor to the third leg much similar single phase motors to generate enough of a stage showtime to become the 3 phase motor started.

The shocked client may accept used the 3 phase motor to run the compressor straight. He probably needed a proficient unloader to prevent the motor from getting bogged down by the compressor until the motor got up to speed. The heart of the Y windings may accept been fastened to the neutral or basis wires, but probably would be shifted towards the 3rd leg.

You can purchase commercial rotoconveters designed to generate 3 phase from 2 stage.

They wait like a motor with no output shaft and have an attached big box containing a batch of capacitors. The rotating armature of a 3 stage motor on its ain will generate a weak third leg that will probably be somewhat phase shifted towards the second leg.

The capacitors are attached between the first and third leg, which will generate a leading current towards the first leg, somewhat offsetting the shift towards the second leg. Calculation a few more turns would generate a larger voltage output from the generated third leg. I have never taken a rotoconverter apart, and so this is just a good guess. Rotoconverters make a very clean 3rd phase from unmarried phase , approaching is xc-95% effectiveness.

You can run multiple 3 phase motors of unlike sizes simultaneously. The motors really help each other. Rotoconverters are somewhat noisy, maybe two-three times that of an equivalent motor. Otherwise they work very well.

I have use a rotoconverter for xx years to run my mill and metal lathe. I am running a 5 hp lathe on a 3 hp converter and accept never managed to slow it downward. Rotoconverters are often used oil companys to run remote oil extraction pumps

It is cheaper to buy the converter than to pay for the miles of copper for the third leg from the power company. - 2022/03/31 from Ozzie

Besides run into LOST NEUTRAL SHOCKS HOMEOWNER- a 3-stage motor "converted" to unmarried phase becomes unsafe

Typical Life of an Electric Motor

I hold with you that the behavior sounds abnormal. There might be something in the local environment such equally unusual moisture or even corrosive gases, or low voltage, or another installation issue that could be a factor.

Certainly plenty of blower motors run in daily use for decades. Allow's both exercise some research on electrical motor failure rates every bit a function of climate such as Florida. And let's both written report dorsum hither

Research on Expected Life of Electric Motors

Brancato, Emanuel 50. "Interpretation of lifetime expectancies of motors." IEEE Electrical Insulation Magazine eight, no. 3 (1992): 5-13.
Abstruse;

Methods for evaluating lifetime expectations are discussed. Factors that affect the life of bearings and brushes and of wire coil insulation are identified. Thermal life of insulation and methods for accelerated testing are discussed.
Examples are included to assist in the calculation of such factors as motor temperature-ascension weather condition and the benefits to be realized through upgrading the thermal nomenclature of the motor insulation system.
De Kleine, Robert D., Gregory A. Keoleian, and Jarod C. Kelly. "Life bike optimization of residential air-conditioner replacement." Ann Arbor: University of Michigan (Retrieved from Center for Sustainable Systems, Report No. CSS10-02) (2010).
Henderson, H. I., & Sachs, H. M. (2006). The Efficacy of SEER as a Seasonal Functioning Mensurate
for Different Climates. Symposium on Improving Building Systems in Hot and Humid
Climates (ESL‐HH‐06‐07‐40).
Hamilton, Robert John. "DC motor brush life." IEEE Transactions on Manufacture Applications 36, no. six (2000): 1682-1687.
Kimura, K., T. Iwabuchi, K. Morooka, and Y. Ishikawa. "Fundamentals-a useful index for estimating rest life of motor insulation." IEEE Electrical Insulation Magazine 6, no. 2 (1990): 29-32.
Hamilton, Robert John. "DC motor castor life." In Conference Tape of 1998 IEEE Industry Applications Briefing. Thirty-Tertiary IAS Annual Meeting (Cat. No. 98CH36242), vol. iii, pp. 2217-2224. IEEE, 1998.
Cheung, G. S. P., and B. Westward. Darvell. "Fatigue testing of a NiTi rotary instrument. Part 1: strain–life relationship." International endodontic journal 40, no. 8 (2007): 612-618.

I had a 3 ton Trane Package unit of measurement installed less than 3 years ago from a reputable visitor in Miami, FL. In less than 3 years, my blower motor had to be replaced twice. To me, that sounds crazy and like something is just not right either with the unit or the install

Visitor says its due to humidity / environmental conditions etc. I live in Miami my whole life, never think any other Air-conditioning units needing a new blower motor yearly. Is this normal behavior for a practically new AC?

This Q&A were posted originally at BLOWER FAN Operation & TESTING

Electrical Motor Wiring Diagnostic Gides, Wiring Diagrams, Parts, Repair Guides

Watch out: if you lot are not trained in proper, safe electric piece of work, stay out of your electrical motor - you could be shocked or killed.

Baldor INSTALLATION, Functioning AND MAINTENANCE OF RELIANCE® STANDARD INDUSTRIAL Air-conditioning INDUCTION MOTORS - [PDF] Baldor Electric Company P.O. Box 2400 Ft. Smith, AR 72902-2400 USA Tel: (501) 646-4711
volume of wiring diagrams for the same serial of motors produced later on under Baldor
Baldor, BALDOR MOTOR Nautical chart [PDF], NEMA Quick Reference Nautical chart to NEMA Frames & Motor Properties, Brownell Motors and Drives
Baldor, BC254 REGEN DC MOTOR SPEED Control INSTALLATION AND OPERATING Transmission [PDF] (2001) Baldor Electrical Co., - retrieved 2022/04/04 original source: https://www.baldor.com/Shared/manuals/730.pdf
Basic ELECTRICAL TESTS for BURNED OUT COMPRESSOR MOTORS
BETTA-FLO JET PUMP INSTALLATION Manual,[PDF] National Pump Company, 7706 Northward 71st Ave., Glendale, AZ 85303, Tel: (800) 966-5240 Email: info@natlpump.com, website: http://www.nationalpumpcompany.com, retrieved anew 9/13/12, original source: http://www.nationalpumpcompany.com/pdf/Betta_Flo_IOM_Jet_Pump.pdf
BODINE Electrical MOTOR CATALOG & MANUAL [PDF] NR-2 - Bodlne Electric Visitor 2500 W Bradley Place Chicago. lllmo~s 60618
BODINE GEARMOTOR HANDBOOK [PDF]
BROWNELL MOTOR REPAIR PARTS Catalog [PDF] Essex Brownell, Essex Group, Inc., 1601 Wall St., Fort Wayne IN 46801 United states of america, Website: www.superioressex.com Tel: 800-774-4643
Burt, Charles M., Xianshu Piao, Franklin Gaudi, Bryan Busch, and N. F. Taufik. Electrical MOTOR EFFICIENCY UNDER VARIABLE FREQUENCIES AND LOADS [PDF] Journal of irrigation and drainage engineering 134, no. 2 (2008): 129-136.
Abstract:
This paper details a study performed past the Irrigation Training and Research Eye to determine motor performances under varying speeds [induced by a variable frequency drives (VFD) controller] and loads.
A farther goal of the report was to provide sufficient information to designers so that they could estimate total pumping plant power usage with a VFD-controlled installation.

Motors were tested with a VFD as well as across-the-Iine. On average, the relative efficiency of the electrical system with a VFD may be approximately 8% lower than the relative efficiency of a properly designed, total-load across-the-line system.

If 1 considers actual field operating atmospheric condition this 8% is misleading because overall free energy savings tin be obtained with VFDs due to their ability to properly suit speeds to meet actual field atmospheric condition.
COPELAND ELECTRICAL HANDBOOK [PDF]
Dayton Electric MOTOR WIRING DIAGRAM [PDF], Dayton Electric Mfg. Co., 5959 West. Howard St., Niles IL 60714 USA, retrieved 2022/07/09, original source: Grainger.com
ELECTRIC MOTOR HORSEPOWER & CIRCUIT WIRE SIZE
Electric MOTOR RUN Management
ELECTRIC MOTOR NOISE DIAGNOSIS
ELECTRIC MOTOR OVERLOAD RESET
GE MOTOR INSTALLATION AND MAINTENANCE INSTRUCTIONS for NEMA 140 to 500 Frame Horizontal Air-conditioning Small Industrial Motors GEI – 56128H [PDF]
GENTEQ ECM Electric MOTOR INSTALLATION GUIDE for Evergreen CM electric motors, previously branded GE ECM Motors [PDF] (2014) Genteq®, 1325 Heil Quaker Blvd., LeVergne TN 37086, Tel: ane-866-503-8566, Website https://www.genteqmotors.com Regal-Beloit Inc.,
Excerpt from the guide: In 2004 the Imperial Beloit Corporation acquired General Electric's Commercial and HVACR Motors and Capacitors businesses with the right to use the GE brand through 2009. These divisions were named GE ECM by Regal Beloit, GE Commercial Motors past Imperial Beloit and GE Capacitors by Regal Beloit.
In 2009, Royal Beloit announced the rebranding of those GE branded businesses under the name Genteq, for markets that include residential and commercial HVAC equipment and electrical applications that utilize capacitors.

With this rebranding, the Genteq logo took the place of GE ECM, GE Commercial Motors and GE Capacitors logos on all branded products, sales and marketing materials, Web sites, communications documents, signage and other related items.
IRONTON ELECTRIC MOTOR OWNER'S MANUAL [PDF] Northern Tool Northern Tool + Equipment Co., Inc. Burnsville, Minnesota 55306 USA NorthernTool.com Fabricated in China - retrieved 2022/04/04 original source https://www.northerntool.com/images/downloads/manuals/29560.pdf
INSTALLATION, Functioning AND MAINTENANCE OF RELIANCE® STANDARD INDUSTRIAL AC Consecration MOTORS - PDF, 180 – 449 Frames (NEMA), 112 – 280 Frames (IEC), Instruction Manual B-3620-25, April, 2007, Baldor Dodge Reliance, P.O. Box 2400, Fort Smith, AR 72902-2400 U.S.A., Ph: (1) 479.646.4711, Fax (ane) 479.648.5792, International Fax (i) 479.648.5895 Website: www.baldor.com
Marathon, AC INDUCTION MOTOR INSTALLATION Functioning MAINTNENANCE INSTRUCTIONS [PDF] Ac Induction Motors 56- 6800 Frames (NEMA) 63 – 280 Frames (IEC) MARATHON ELECTRIC Contact Motor Customer Service at: Phone: (715) 675-3311 www.marathonelectric.com
Marathon, AC Consecration MOTORS [PDF] 56-5000 Frame, Manufactured for Allen-Bradley past Marathon Electric, Inc., retrieved 2022/04/04 original source: https://literature.rockwellautomation.com /idc/groups/literature/ documents/um/1329m-um001_-en-p.pdf
Excerpts:

These instructions must be followed to ensure safe and proper installation, operation and maintenance of the motor. They should exist brought to the attention of all persons who install, operate or maintain this equipment.
MOTOVAIRO USE & MAINTENANCE INSTRUCTIONS for ELECTRIC MOTORS [PDF] (2019) Motovario, Teco Group, Motovario S.p.A. Via Quattro Passi 1/3 41043 Formigine (MO) Italy Tel. +39 059 579700 Paid-in Capital: Euro xviii.010.000 i.v. Rea: R.Due east.A. di Milano due north. 1863844 Website: world wide web.motovario.com
Qi, Fang, Daniel Scharfenstein, Claude Weiss, Clemens Müller, Ulrich Schwarzer Electrical MOTOR HANDBOOK [PDF] (2019) Infineon, retrieved 2022/04/04 original source: https://www.infineon.com /dgdl/Infineon-motorcontrol_handbook-Additional TechnicalInformation-v01_00-EN.pdf?fileId= 5546d4626bb628d7016be6a9aa637e69
Excerpts: This motor handbook was created by Infineon Technologies AG together with Plant for Ability Electronics and Electrical Drives, RWTH Aachen University/ Federal republic of germany.

The operation principles and characteristics of the different types of electric machines are explained using brief automobile descriptions, diagrams, tables etc. In dissimilarity to other documentations on electrical machines complex mathematical descriptions are avoided wherever possible.

The rotation management tin be set by the position of the capacitor in front end or behind of the auxiliary winding as can be seen in Figure xviii.
Sterling, Unmarried PHASE Electrical MOTOR INSTALLATION & MAINTENANCE Transmission [PDF] (2006) Sterling Electrical Co., Irvine, California (800) 474-0520 Indianapolis, Indiana (800) 866-7973 Hamilton, Ontario (800) 809-0330 electronic mail: sales@sterlingelectric.com www.sterlingelectric.com retrieved 2022/04/04 original source: https://www.sterlingelectric.com/manuals/Single Phase Motor O K Transmission 032106.pdfv
TECO WESTINGHOUSE MOTORS & DRIVES PRICE Book [PDF] TECO-Westinghouse Motor Company, 5100 N. IH-35, Round Rock TX 78681 Us, Website: www.tecowestinghouse.com Tel: ane-800-873-8326 - catalog extract:
Our manufacturing plants are located in the U.Due south., Taiwan, United mexican states, Malaysia, Australia, United kingdom and China. A total line of induction, synchronous and DC motors and generators are available in both horizontal and vertical configurations from one/4 hp to 100,000 hp. We also offer complimenting Ac bulldoze products
.
Test a MOTOR START or RUN CAPACITOR - how to commodity
WEG, INSTALLATION AND MAINTENANCE Manual FOR NEMA LOW VOLTAGE Electrical MOTORS [PDF] WEG Electric Motors Corp. 2100 Brighton-Henrietta Townline Road Rochester NY 14623 U.s. Tel: 716-240-thou , retrieved 2022/04/04 original source: https://world wide web.stevenbrownassociates.com/ pdf/drivers/electric/weg/motor.pdf
Excerpt: This manual covers all the three-stage and unmarried-phase asynchronous squirrelcage induction motors, from 140T to 580T frame sizes. The motors described in this manual are subject to continuous comeback and all information is discipline to alter without notice. For further details, please consult WEG.
WEG, SPECIFICATION of ELECTRIC MOTORS [PDF] Op. Cit.
Excerpts:
a ) Straight electric current motors
These motors are quite expensive requiring a direct current source or a converting device to convert normal alternating current into direct electric current. They are capable of operating with adaptable speeds over a broad range and are perfectly suited for authentic and flexible speed control. Therefore, their use is restricted to special applications where these requirements recoup the much higher installation and maintenance costs.

b ) Alternate current motors These are the most frequently used motors because electrical power is normally supplied as alternating current.

The nearly common types are:

Synchronous motors: synchronous motors are iii-stage Air-conditioning motors which run at fixed speed, without sideslip, and are mostly applied for big outputs ( due to their relatively loftier costs in smaller frame sizes ).

Induction motor: these motors generally run at a constant speed which changes slightly when mechanical loads are applied to the motor shaft.

Due to its simplicity, robustness and low cost, this type of motor is the most widely used and, in applied terms, is quite suitable for almost all types of machines.

Currently it is possible to control the speed of induction motors by frequency inverters.
WWE, Ac Induction MOTOR IO MANUAL [PDF] Installation And Maintenance For Fractional Unmarried-Phase and Polyphase Air conditioning Induction Motors This Transmission Covers WorldWide Electric's NT, NAT, NATE, NTJ, NATJ, NATEJ, WSSNV, WSS, NAWSS, NAWSSE, SSPE, FM, and FD Models - WorldWide Electrical Corporation 3540 Winton Place, Rochester, NY 14623 Sales Support: (800) 808-2131 Technical Support: (844) 993-7378 www.worldwideelectric.net
As well see REFERENCES at the terminate of this article

Reader Q&A - besides come across the FAQs serial linked-to beneath

@noah,

It could be that the motor or a bearing in the motor is failing but a reasonable check that most service techs would make is to
simply swap in a new start capacitor. That may requite you some more than life out of the motor.

I have a two speed electric motor for my married woman'due south Spa/Hot tub, but it only has a unmarried start capacitor. The event is that the motor volition offset properly when power is applied to the high speed terminal, merely won't commencement (just 'hums') when power is applied to the low speed terminal.

If I become the motor started with the high speed terminal and and then switch power to depression speed winding, information technology will continue to run just fine, only information technology won't get-go up on that winding. It used to start upwards on either winding. What is the issue? I thought that if the capacitor was bad, it wouldn't start on either setting, merely starts fine on ane only not the other.

@Peter Tozer,

I would expect for a loose electrical connection,

an excessive load being practical to the motor,

A bad begetting,

For if the motor is being controlled by a relay, a bad relay

I accept a 12 volt electrical motor which goes start/terminate/start/stop so on in very rapid succession when continued to the bombardment. what is wrong with it?

@Chjris,

Most-oftentimes the motor problem you lot describe, loss of torque and increased electric current draw (until it trips the circuit breaker) is caused by

1. overloading of the motor: for example if the compressor itself whose piston and other moving parts is failing due to wear or poor lubrication or a bad bearing, or due to backpressure load on the compressor, and then the electric motor driving the compressor will face an abnormally high load that in plough can cause the motor to overheat or draw excessive current. Ultimately the compressor itself may seize or the motor driving it may seize.

2. failing bearings in the electric motor itself, again causing a resistance to turning or moving parts that leads to overheating of the motor itself, college current depict, until the motor trips the circuit breaker; ultimately the motor itself may seize.

I have 2hp motor that will starting time. Still, the longer it runs the less torque it has. then information technology will pop the breaker, It goes on a compressor.

@Dennis E Strawn, reset of a tripped motor condom switch tin can require some time to allow the motor and overheat sensor to cool downwards.

And yes, depression voltage can prevent a motor from running or starting and might upshot in a humming motor.

Have an air compressue motor that will hum for a few seconds before stopp[ng. Has a reset button on motor, but doesnt seem to reset. Have a voltage supply of 123 volts now, but before I corrected the recepticle connectedness, it wasnt getting the 120 volts that it needed.

@Bearding, in the recommended reading list found at the end of the article above you will want to click on the link to the commodity titled

CAPACITORS for HARD STARTING MOTORS

0 y'all volition also come across in the article index or nigh the stop of the article I only recommended other links to procedure for selecting the correct capacitor

I need aid with choosing the correct capacitor could you help me please my email istalal 6611 9116 Gmail

Luis

If by undulating y'all are describing a motor whose speed seems to continue speeding up then slowing downwardly,

I would showtime check the stability of the supply voltage to the motor.

Other possibilities are a failing bearing, overheating, a poor electrical connection, or a winding that opens when the motor gets up to higher speed.

What is the cause of motor undulating?

If the air handler blower fan motor is not starting the problem could be a failed motor, bearing, or simply a bad motor capacitor.

You changed out the run cap but what about the starting capacitor?

Possibly you tin can requite me a footling direction....'a/c wasn't working, turned fan to "on", no air from vents. Opened handler cover. Coils were common cold/iced. I defrosted and cleaned with coil cleaning foam. Checked and cleaned bleed line and dried the sensor. Still no air out of vents

. If I plough off unit at the switch. And so turn it back on, I can hear the thermostat click, and the a/c unit 'picks'... and then the internal fins in the blower are moving. I hear a kind of whump ... whump ... whump like some motor is trying to engage merely nothing is happening.

Even idea the fan inside the unit of measurement is spinning, no air bravado from the vents. Is it time to go outside and work on the compressor role or could it nevertheless be something inside at the handler? Its Friday after thanksgiving, trying to ready this myself if its possible, or at least know exactly what the trouble is before I telephone call in the "pros".

I take some electronics background and I have changed out the run capacitor ouside a few time. Usually if its that, the air does blow from the vents.

Since your motor is working it sounds every bit if the trouble is with the wiring or a switch or control

I accept an electric motor for a bed to lift and lower but now it only goes ane direction what could be the problem

McMaster Carr electric motor varnish - cited & discussed at InspectApedia.com

Bruce:

Companies who are adept in or who provide electric motor re-winding services describe use of either varnish or a resin used to insulate the motor rewinding wire after repair.

Dreisilker describes four types of electric motor winding insulation methods; yous'll want to run into that guideline before buying anything. You'll want to match your winding insulation method and material. The four methods are

1. Dip and bake: electric motor windings are dipped in varnish and then baked in an oven

two. Trickle varnishing: the motor windings are heated and spun to distribute the varnish

three. Vacuum Pressure level Impregnation (VPI) a vacuum pressure tank filled with varnish is used to fully impregnate motor windings and insulation with resin or varnish.

4. Ultra-Seal - the electric motor windings are impregnated with high molecular weight thermoset polymer resin.

- https://dreisilker.com/blog/iv-types-of-motor-winding-insulation-methods/

You lot tin run across that some of these methods for electric motor winding insulation are pretty sophisticated and crave special equipment. So you lot need to choose the method before buying varnish, some other resin material, or thermoset polymer resin sealant.

Once decided there are quite a few suppliers of resins and varnishes for sealing motor windings, and nearly 500 products among which to cull, including some simple spray-on products; which and where you lot buy depend likewise on the state in which you're working.

Just i example is a spray-on motor winding varnish from

McMaster-Carr, 9630 Norwalk Blvd. Santa Fe Springs, CA 90670-2932, Us Website: www.mcmaster.com Email: la.sales@mcmaster.com Tel: (562) 692-5911

Where do I purchase all the insulation cloth for just ane motor rewinding?

hendricksonbruce399@yahoo.com

Could be a burnt winding or declining bearing or of course, low voltage.

single phase electric motor tripped earth leakage and later on remaking connections, runs again merely at reduced speed

I have a single stage 240v motor running an air compressor. When tbis moto 3rd is running my lights on the same excursion flicker. What could be causing this?
Is this a simple set up?

What are the Reasons for Depression motor running Amps(7.5A@245V) in 2HP unmarried phase submersible Borewell pump set with first & run capacitor ??
Normal Running Amps :12.5A@245V

If main winding is faulty, and auxiliary winding is all correct, of submersible pump ready motor with start & Run capacitor, then what would exist the Running Motor Amps as chief winding is already faulty ? (2HP Rating, single stage pump-set )

Fan motor winding & wiring detail (c) InspectApedia.com Lindy Lindy

Have you checked to be sure that there are no switches that could be out of order.

Due east.k. a start winding power may be turned off by a centrifugal switch.

I have the following fan motor model # SFC1-500B, 120V 60HZ 1.35A 162W. I am trying to figure out how to repair it. This is a learning projection and not certain how to become past this part.

The red color wire has no continuity getting to the windings.

I checked information technology from one of the prongs on the power cord.

The power cord is continued to a red wire that goes to a white wire that goes to the windings.

In that location is continuity to the white wire as yous can see under the insulation that disrepair into the windings. I check the winding to see if there is continuity and I get none. I should be able to touch it with the multi-meter and become low resistance correct?

How do I cheque to encounter if the coil can receive power from the power cord? This seems similar the almost obvious style. If in that location a copper wire broken from the white wire located under the insulation?

Centrifugal blower motor wiring diagram & diagnosis (C) InspectApedia.om Lakshipathi Lak

If that motor is new and came with three other identical motors, and if it was wired properly just does not run, and so the motor is defective, perhaps seized or with a manufacturing defect - not something we can decide from photo solitary.

Notwithstanding in a higher place on this page we describe diagnostic testing procedures for such electric motors.

Howdy nosotros got iv new motors and i besides non working it's blower type ,I am giving straight supply 220v not with blower set up,for checking purpose just no one is rotating may i know the reason

Mike

That sounds like a failed motor or a shorted command or circuit

Right, Bob, that's why a service tech often "shotguns" a repair approximate by swapping in a new cap.

Let me know how that works.

I have an Electric motor on air compressor that starts and runs for virtually 5 seconds and trips breaker. Tried on several different circuits.

I guess a replacement capacitor will be a lot cheaper than a motor, so I'll try that first and let you know. Thanks.

Yes that'south possible.

howdy and thank you for your reply. I have read the linked article and noted the possible reasons for my single stage motor going ACW rather than CW.

It may exist that the error/damage had already been done earlier I bought information technology but I can't see how the motor'south start widing connections could have been reversed, every bit being one suggested possibility. As regards a failed electric motor starting capacitor, at that place is a small square capacitor close to the manual switch. If this was faulty, could it influence the motor direction?

Bob

Allow'due south starting time with diagnosing the cause and then we can select the cure for an electric motor that runs backwards. It may be that the motor was damaged or information technology may just exist a wiring error.

See details at ELECTRIC MOTOR RUN Direction - backwards

after checking there let me know you you're progressing

My lawnmower, which I bought on eBay, is rotating the wrong style.

The single phase domestic electric motor has two terminals/spades which I swopped over just no modify.

The motor should rotate clockwise, looking on the spindle, which ties in with motor fan and grass impeller configuration. There is a capacitor adjacent to the manual switch, if this item was faulty could it have whatever event on rotation?

The mower does cut the grass, throws most of the cuttings into drove box simply too scatters some around!
Would be grateful for any suggestions/solutions, thanks.

Lentikile

Humming motor without running is often a bad start capacitor or a seized motor,

besides tin be low voltage or overloaded motor.

Anon

I don't know enough from your note to brand a reliable gauge at what's wrong with your motor, but yes, a motor winding sometimes opens up only when the motor is spinning.

I've tested continuity because the motor only has one capacitor ando the wiring seems fine.could information technology exist that the windings are damaged?

If a single phase automatic pump motor just makeso sound without running what could be the cause

Jimbo

That sounds to me like a wiring mistake, damaged or shorted wire, or perhaps a lost or bad start capacitor. It's possible that dis-assembly and re-associates nicked a wire or connector belonging to the get-go cap.

My 100v induction motor was squeling but running and starting fine. I found a bad bearing on the front so I change both front and rear bearings.

Everything turns very smoothly by paw but when I plug it in information technology now merely buzzes and blow the billow.

Tin't effigy what I did wrong. All went back together as originally. Finding it hard to believe it is the capacitor or centrifugal switch or contact since it ran before the bearing change. Ideas?

Jessie

I can't say with certainty but I think your elecrician volition look at

- actual voltage being delivered to the high speed terminals

- pump wiring connections

- pump loading, bearings, water supply

Meanwhile, don't claw it up as you risk a fire (and may have damaged the pump)

I accept a single phase 220 Dual speed pump and when I hook the high speed side up information technology runs for nigh v seconds and then starts to smoke and shuts off but if I hook up the depression side it runs fine why is this

Les

Lookout man out: What you lot describe is very dangerous risking an electric stupor injury or worse.

Y'all should unplug that motor immediately. About likely the switch has either failed internally or is shorted internally. It's possible that the wires to the switch have go shorted together.

The 230V Rockwell motor on my tabular array saw runs with the switch on or off. What could be the trouble?

Wally

If the trouble wearable a switch that needed to exist reset and then I don't think y'all would come across whatever movement in the fan when you plow ability on

Motor doesn't start when relay closes. Sometimes fan moves e'er so slightly. Changed capacitor only no changed. I oasis't pulled the motor assembly out from the enclosure yet. Could it peradventure have a resetable overload switch?

COuld be a bad start capacitor

1hp air compressor. The motor merely humms when you plough information technology on. Y'all tin can freely turn the pulleys when this happens. Possibly like starting out in overdrive going uphill.

Information technology sounds to me like you want the motor tested.

That's actually would be less than the price of arbitrarily replacing the motor. At that place is something you can do commencement which is to remove the motor completely and simply ostend that the motor drive shaft will spin freely.

If the bulldoze shaft doesn't spin easily or if information technology wiggles in its bearings, or if there is a lot of end play when you movement the motor drive shaft parallel to its axis then the motor is probably damaged or its bearings are shot.

A motor rattling noise or vibration may also be a sign of failed motor bearings.

Encounter details at RATTLING & VIBRATION noises from A/C or Rut Pump System

I have a Waterco Aquanature 50xl heat pump for my puddle.

Later a normal cycle the fan stop, after the fan tries to kickoff, but information technology takes two-3 times before she gets going once more at full speed.

I changed both capacitor (10uf 370v) and i nonetheless have the same problem. Anybody ever heard of that trouble before ?

(relay skilful too) i affair it could be the motor merely it's very expensive for merely a test ? whatever assist (motor 1/8hp 825rpm 208-230) Thnx for your help

Waterco Aquanature heat pump motor diagnosis (C) InspectApedia.com Tommy

Tobey:

Checking a condenser fan motor with a VOM or DMM in Ohms way:

On a multi-speed fan you'll find different resistances on different wires checked against the white fan wire - for an A/C or heat pump condenser fan.

Beyond that - which is model specific - a resistance of cipher across the motor usually means that there is an internal short, maybe in the windings.
and infinite resistance typically ways that there is an open connector or open winding.

What is a condenser motor fan supposed to read when you lot ohm out

Ron, if we assume the motor isn't overloaded then it sounds as if the motor is overheating, possibly from a bad bearing. Cheque kickoff, though, for low voltage.

Small AC capacitor start motor. 1/2 hp. It runs fine for x minutes, and so stops running. Then buzzing trying to beginning again, but information technology cant. The get-go capacitor was burned out when I got it, but I replaced it.

Table of Air Conditioning or Heating Organization or Other Electrical Motor Troubleshooting Procedures for a Motor that Will Non Start

Table A: fourteen Things to Check (in this club) if an A/C Electric Motor Will Non Starting time is now found

at ELECTRIC MOTOR WON'T START / RUN - 14 Things to Check

Table of Air-conditioning or Heating Organization Electric Motor Troubleshooting Procedures for a Motor that Overheats or Trips its Reset Button or Runs at Abnormal Current or Voltage

Table B: 7 Things to Check if an Electrical Motor Starts but Overheats and Trips its Reset Button or Runs at Aberrant Voltage or Current Levels is at present plant

at ELECTRIC MOTOR OVERHEATS

Table C: 7 Things to Cheque if an Electric Motor is Noisy

Table of Ac or Heating Organisation Electric Motor Troubleshooting Procedures for a Motor that is Noisy

For certificate loading speed nosotros moved this information.

Please run across separate commodity: Electrical MOTOR Dissonance DIAGNOSIS

Which way does an Electrical Motor Run - Can Electric Motors run Backwards? Data found on the electric motor's data tag.

Details for this topic have moved to ELECTRIC MOTOR RUN Direction.

In brusk: check the motor label: uni-directional electric motors run just one fashion: clockwise (CW) or counterclockwise (CCW) but not both. Bi-directional & self-reversing electrical motors run in either direction, CW or CCW. Some electric motors can start and run "backwards" following damage to the motor's start capacitor or windings.

...

Continue reading at Electrical MOTOR OVERLOAD RESET or select a topic from the closely-related articles below, or see the complete Commodity Alphabetize.

Or run into Electric MOTOR DIAGNOSTIC FAQs - questions & answers posted originally at this page.

Or see these

Suggested citation for this spider web folio

Electric MOTOR DIAGNOSTIC GUIDE at AuditApedia.com - online encyclopedia of edifice & environmental inspection, testing, diagnosis, repair, & problem prevention advice.

Or see this

Alphabetize to RELATED Articles: Article INDEX to ELECTRICAL INSPECTION & TESTING

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