prasannas's blog

Mostly Air Compressors are driven by electric motor.This is the cheap option available comparing with other options such as diesel generator etc.
The operating cost of any air compressor can be reduced by using electric motor as a driving media.This is true when your electric motor runs very
smoothly.But think,if your electric motor failed to start due to burning of motor winding or failure of bearings etc.What will be the cost of repairing or
replacement? This cost may be near about 33% of your Air Compressor cost.Do you believe this? if don’t,find out at own.

As you know google AdSense is the best way to earn extra income online.Many webmasters and Blogger have joined this program but earning very low
income from AdSense.99% of AdSense Publishers are earning less than $ 10 per month,this is the fact and every one is trying to increase their AdSense
Revenue by one or another way.Many experts are in this field,are ready to open their experiences to increase the AdSense earnings.It is true that AdSense
revenue can not be increase in a day or two.This requires your dedication & some time period.

As you know,electric motors are used to drive Air Compressor.These electric motors are of different types as per the requirement of customer.As different
electric motors used,different type of starters are required to start these motors.Particular type of starters are required for particular type of motor.

Here I will disclose the working of DOL and Star-Delta type Starter.

01)Direct On Line Starter:-

Air compressor are driven by electric motor and these motors are started by different types of starters according to the requirement.These starters may be fully automatic with push button to operate or totally manual type,as per the design of the manufacturer and the choice of the customer.Here I will write about automatically operated and manually operated starters.

01)Automatic Type Starters:-

Though you have installed your electric motor with all the pre-commissioning check-ups,sometimes any accident happens to your motor and it needs to give attentation before using it again.If any water or any moisture observed in electric motor,it should be dried out.This will ensure safe running of motor as wel
as Air Compressor.

Air compressor is the utility which consumes maximum electric power in any plant.Air compressor can be driven by the DG Set also,but it is very expensive
option comparing to driven by electric motor.maximum plants used electric driven air compressor for compressed air purpose.It is also most important to
know about electricals & instrumentations used in air compressor.If you have no knowledge about electricals then it will be very diffcult to run air

Instate of giving details about Low cooling water pressure switch (LCWPS) I am giving you details about Low Cooling Water Flow Switch (LCWFS).Why I am
doing this? not to any perticular reason,but the operation & setting of LCWPS is same as LOPS(Low Oil Pressure Switch).Same INDFOS Make-IPS 70 switch
is used as LOPS & LCWPS,the only difference is “LCWPS” used in discharge (outlet) water line of closed circuit system or in water inlet (between inlet valve & compressor) for open drain type system of air compressor.Find the details about LOPS from previous post.

In my last post,I wrote about minimum safty switches required to be install on Air Compressor,that are LOPS,LCWPS,HDATS & Motor Overload Relay.It is also
important to protect your compressor from excessive vibrations developed due to operation or any other reasons.Unfortunately many plants are not using this
safty switch on their compressor.If you are using or interested to install Excessive Vibration switch,this post will help you to increase your knowledge.many

It is most important to prevent your Air Compressor from any breakdown,because breakdown not only increase maintenence cost but also suffers your
production.You have to bear production loss due to breakdown of machine.many safty switches as like LOPS,LCWPS,HDATS etc. are installed for safty
of compressor.I have written on LOPS in last post.High Discharge Air Temperature Switch (HDATS) is also one of the most essential safty major has to be

It is very important that the air compressor should run in good working condition to deliver best result,for this we have to take care of this important utility.As I said earlier,we can not keep one operator for full time near to compressor & keep watching performance.That is why it is necessary to provide some
safety switches in control panel.This safety devices will work in abnormal condition & stop electric motor and further prevent any breakdown in Air
Compressor.