Check the motor winding ohms reading using multimeter or ohmmeter for phase to phase terminal ( U to V,V to W ,W to U ).Reading for each phase must same within one or two ohms deference.If no reading,maybe winding was defect. Now set your multimeter knob on connectivity text or Ohm. Check your inserts. If any particular phase fails the continuity test, your motor is probably burnt. This should allow you to isolate your problem. Assuming you did not get an infinite reading, disconnect the motor from the cable and test each separately. The other supply wire will be connected to a capacitor and to compressor terminal will be your run terminal, mostly in split unit AC the blue color wire is used for the run terminal. First of all, I want to give an example of a fridge compressor. Electric motors have had a reputation for being a mix of science and magic. Whats people lookup in this blog: Sometimes when our refrigerator compressor stop working or not running a problem then we must call a professional to test the compressor or refrigerator. We service all models and manufacturers of motors, industrial electronics and hydraulics. So first read the below post, and flow the method to test the compressor. So the other wire will be the start terminal, otherwise, 2nd supply wire will be connected to the start terminal through a capacitor or heating resistor. Touch the red (positive) lead of the multimeter to the positive end of the wire windings around the motor. But this post especially about the check compressor motor winding. Repeat this step with all motor winding terminals one by one. ... Now if you check compressor motor windings and not find any problem and still compressor did not run then change the capacitor and if still compressor not working then check the overload protector. Induction motor by multimeter hindi how to check winding resistance on a windings of a 3 phase ac motor windings of a 3 phase ac motor Insert one of the probe test leads into the common voltage pin connector and the other into one of the winding pin connectors. Like Reply. If the motor itself has developed a fault, the fault may be a burnt wire or connection, a winding failure includin… if your motor is Three speed then you need to check three wirs continity. If you are having problems with your DC Motor, check the brushes: If you’re having some trouble determining the problems you are having with your motors,  if replacing individual parts is not feasible or having no effect, or if your motor does need to a rewind you can send your motor to Global Electronic Services for repair. The flow of electricity into the windings creates an electro- magnetic field which the magnets try to repel and the motor starts to turn. Each time, you should get a reading of around .8 Ohms, although anything from .3 to 2 is acceptable. Step 1 - Get Ready. Using a multimeter, check the continuity of motor winding from phase to phase (U to V, V to W, W to U).Each phase to phase must have a continuity if winding is OK. Continue this process with the start and run terminal. What Is Starting Winding And Running Quora How to check ceiling fan winding with multimeter you capacitor connection diagram of ceiling fan by earthbondhon you why is a capacitor in fan quora what type of motor is in a ceiling fan how does. Readings should be infinite. A common Capacitor Start Pool Motor has three sets of windings: two sets of main windings which are engaged while the motor is running and a third Capacitor winding that provides extra torque in the motor during its initial startup. Check each set of motor windings. Distribution Board Wiring Diagram For Single Phase Wiring, How to Control a Lamp / Light Bulb from Two places Using Two Way switches For Staircase Lighting Circuit, Contactor Wiring Diagram For 3 Phase Motor with Overload relay, Ceiling fan Capacitor Wiring Connection Diagram. We recommend this meggar test only as a start to figuring out what could be wrong with your motor and always follow with a surge test. Please see how to identify three … We turn around most repairs in five days or less and can even provide one or two-day free rush service if you need it. If you want to check your fridge compressor then flow the below steps. This test provides a DC voltage to the motor winding and measures how much current flows through the insulation to ground: 1) Test the motor de-energized by using a properly working voltmeter. AC Motor Winding Resistance Test Check the motor winding resistance or ohms reading with a multimeter. So when a motor fails to operate it may not be obvious what the problem is. All pictures are for reference only and may not be the actual unit. First of all plug out the fridge main electric plug. Using Ohm meter: Disconnect all power from machine. (note that direct wire was connected in those single phase compressor, in which the overload protector is instilled internally). Connect one test lead with any of the winding terminal and second test lead with Motor Body. Test T1 to T2, T2 to T3, and T1 to T3. Another possibility is that the driven load is jammed, binding or mismatched. We may or may not be an authorized distributor or representative for the manufacturers listed on our website and/or videos. If your resistance between common and ruining is lower than resistance between common and starting then all is right and your compressor is winding is good condition and if that shows different results then compressor winding is burn or cross. Now if you want to check the Air conditioner compressor then it's also too simple, in the air conditioner compressor we have labels in which the R, S, and C written or parked. first of all check motor winding continity.if the motorn is on single phase you need to check both winding like running winding and the starting winding. TL;DR: You can test motor windings by using a multimeter to test for Short to Ground or Open or Short in Windings. First of all, the terminal of the air conditioner compressor terminal is connect to an overload protector or direct to supply wire is your common terminal. A good motor winding is indicated by a resistance reading of infinity from the digital multimeter display. Also, within your appreciation, I just want to add that if you are also facing some problem with your refrigerator and want to repair it ASAP then contact Airwin Aircon & Fridge Services where you will get professionals for your Fridge Repair Singapore. Check the terminal block, closing it on the body and between the mounting bolts of the connection pins. If you think you may have bad spindle motor windings, it’s important to know for sure. The megger will help to detect areas of deteriorating insulation where the windings may soon short. Now connect one lead of the meter to compressor common and other connect compressor uninsulated body place. We can test, diagnose and come up with a solution for your problem fast. What is the role of PTC Relay for the fridge compressor? If its zero or reads any continuity at all, then a problem exists with either the motor or cable. Windings will vary depending on where you are load is jammed, binding or mismatched electric motor 's or! Be connected to the positive end of the multimeter screen is the role PTC... Around.8 ohms, although anything from.3 to 2 is acceptable are. Herein are the property of their respective owners resistance of the supply which is connected to the supply. 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