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How to select a right capacitor for use

The Motor start capacitors is connected to the motor windings when starting to help the motor run faster. In the event of a short circuit in the motor operating speed, the starting capacitor is disconnected from the winding circuit. A starting capacitor is connected to the motor, which helps increase efficiency. It remains connected when the pump motor is running. The starting capacitor is generally rated for 50-400 MFD և 125 or 250V AC. The capacitor is generally rated for 15-50 MFD և 370V AC. The capacitor shown is a 124-149 MFD 125 VAC starting capacitor.

Capacitor Motors

– Not all motor pumps use pool capacitors. There are four common types of motor pumps for residential areas: split phase, starting capacitor, permanent split capacitor, and capacitor starting / operating capacitor.
The split-phase motor is widely used in baths and whirlpools and in surface swimming pools. This design has a first coil and a starter, but no capacitors.

Capacitor starter is often used in surface pumps for swimming pools. The starting torque is higher (150-175% of the total charge) and the starting current is less than the equivalent of the split phase. The operation is similar to the split phase because it is a starter that removes the starting coil and capacitor from the circuit when the motor reaches 2 / 3-3 / 4 of the total speed.

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A stationary capacitor motor has no starter switch and is often referred to as a “stationary” motor. It uses a working capacitor that remains constant in the circuit. The PSC design has much less starting torque than the original capacitor design.
Capacitor / capacitor starter motor is used to increase design efficiency. Both starting and starting capacitors are used. In PSC and Cap mode. Hass / Kap. The motors are the same.

Step 3

Location Trail Condenser – START Capacitors are usually housed in a rigid plastic or glass housing, usually, but not always, under the last hull of a non-motorized engine.

Step 4


Location of Working Capacitors – RUN capacitors are usually metal capacitors (aluminum or steel), but they are not always “under the hood” at the top of the engine – they are also called condenser housing or “dog house”. This photo shows the location of the condenser operating under the dog house.

Step 5


Installer Container Pressure – Failure of the starting capacitor usually causes a “slow start” or “no start”. If the START capacitor starts to break, you can detect a leak of electrolyte oil and block the air velocity. Dissolves and releases electrolyte oils. A physical hole appeared in the air after a failure of the starting capacitor.


Step 6


RUN RUN CONDENSER FAILURE – RUN RUN capacitor failure is usually caused by “high amplifiers” and sometimes “without ignition” and often the motor does not start in high amplifier mode without thermal protection. When a RUN starts or breaks a capacitor, the end of the capacitor that has terminals, and sometimes terminals without a terminal, pays off.
In case of a fault, the power rating will be much lower than the rated one. RUN capacitors usually have no “wind” – they expand / tilt from the outside with the internal protective structure of the fault, so that the tendency outside the terminal breaks the internal contacts of the capacitor in the form of a fault.

Step 7


Replacing the Starter Capacitor – See our “How to Replace a Pool Pump Capacitor” Manual. Never install a low power capacitor when replacing a capacitor. If you can not find a capacitor of your size, it is permissible to use a capacitor one step above. If the pump motor is constantly burning capacitors, try using the following larger capacitor. The capacitor is subject to power fluctuations or jumps. If you can not control the power of your system, you may need a slightly larger capacitor. Use this connection to purchase the required starting capacitor.

Step 8


Capacitor Replacement – To replace the original capacitor, remove the capacitor cover by screwing in two screws. Then follow the steps above to turn the capacitor off and replace it. As stated above, never replace the capacitor with a lower rating when replacing the capacitor. If you can not find a capacitor of your size, it is permissible to use a capacitor one step above. If the pump motor is constantly burning capacitors, try using the following larger capacitor. The capacitor is subject to power fluctuations or jumps. If you can not control the power of your system, you may need a slightly larger capacitor. Use this connection to purchase the required starting capacitor

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