Tips for storage electric motor

02/06/2011 by 5 Comments

Some people do not concern about the correct method to storage the electric motor.This matter look like simple and easy but if we not take serious action,it can cause serious damage and involve high cost for repairing when electric motor defect due to not proper storage method.

I hope my post this time can make all of you some clear picture or idea how to storage the electric motor with proper method when it not use for a long period or for spare item.

When electric motors are not in operation,we must ensure several precaution for maintain electric motor in good condition and best performance without any defect.Here i want share some tips that we must consider for electric motor storage condition. read more

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Cooling method for transformer

07/05/2011 by 2 Comments

Why cooling system for transformer very important? The amount of heat from a transformer typically dissipated  is about 12.5 watts per square meter of surface area per degree C.It also can prolong the transformer life span if it running in normal temperature without exceed the maximum limit.

Normally transformer installed in special area or room for power distribution such as sub station or power room.The heat generated from transformer must be removed by circulate the air by ventilation or by the cooling system.

Commonly manufacture use a method of lettering is used to denote the form of cooling for a particular transformer.Four upper case letters are used.The first pair of letters are for the heat removal from the windings and core. read more

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Electrical motor components

02/05/2011 by 2 Comments

Electrical motor is a common used in industrial for many application.This time i want share the basic knowledge for electric motor.Before we go further about how to troubleshooting,repairing or installing,firstly we must know roughly about the electrical motor component.

For electrical person,electric motor components basic knowledge should familiar because we can easily understand operation and troubleshooting for electric motor.

We must know all electrical motor components function before we perform any task for electrical motor.This is very important information to make our jobs more easy and smooth.Below are several important for electrical motor components. read more

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Vacuum method for air-conditioner

23/04/2011 by 15 Comments

When install new air-conditioner or replaced new compressor or change new expansion valve,we need to evacuation or vacuum process.This is important to ensure no air inside the piping system.For easy understanding,this process is to vacuum the system to take out the air and moisture.

If air remain in the air-conditioner and refrigerant piping,it will affect the compressor performance,reduce the cooling capacity,clogged the cycle of refrigerant and could lead a malfunction.

This procedure very important to make sure air-conditioner running properly and can use for long period without breakdown.All maintenance person or electrical technician must know how to perform evacuation procedure. read more

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Air-conditioner services

20/04/2011 by 3 Comments

To ensure our air-conditioner running in good condition, we must perform periodical services at least  every 6 months.Why we must care and cleaning our air-conditioner?

The main cause when our air-condition have a low performance came from dust filter is dirty,it will cause a low cooling capacity,increase electricity cost,unpleasant smell and purified air to our room.

The unit will become to dirty and the cooling capacity decrease after being used in several seasons.So we need to perform cleaning regularly to ensure it in good condition.It very easy to do it your self.

This time i share the simple method for cleaning our split unit air-conditioner.Please switch off the power supply before perform cleaning task to avoid electric shock. read more

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Single phase compressor for air-condition

17/03/2011 by 26 Comments

In air-condition system,compressor is a main component to pump the refrigerant circulation in system.It like our heart to pump a blood all around human system.If this part breakdown or have a problem,all system is paralyze.

Normally for single phase air-condition system,the common type of electric motor is running capacitor motor and used scroll type compressor.The famous brand now in market such as Copeland,Daikin,Toshiba,Mitsubishi and others brands.

I want explain about single phase motor for air-condition or refrigerator compressor basic concept and how to check their winding condition and connection. read more

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motor nameplate information #6 – Construction

15/03/2011 by 1 Comment

This information is very useful when we selected the electric motor.From this data we can estimate the type of motor and the suitable application to ensure it running full capacity and more efficiency.

This is a basic data that we can get from electric motor name plate.Normally it tell about enclosure,motor frame,and bearing.This information can make we easier to rectify any problem when motor is defected.

Example we can know the size and type of bearing used for that motor.We can know the information without dismantle the motor.Only from the nameplate of motor. read more

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