Thursday, 29 October 2020

Common reasons a Generator might fail and how to fix it.

 Every backup generator needs some degree of preventive maintenance. If proper care is not taken, there may be several reasons that it may perform optimally. The most common issues are listed below.


      Sometimes due to negligence, the Auto Start switch may be in OFF position, in that case, the generator will not start automatically if a power outage happens. It is important for you to understand the basic features of the control panel of your generator. You should also be aware of the 'alarms' which trips the generator.  


      Battery failure is the single most common reason of generator fails. It is better to replace the battery every three years. To keep the battery in good shape following the recommendations given below will help. 

  • Strictly follow the battery maintenance routine prescribed by the manufacturer.
  • Petroleum jelly should be applied on the terminal / cable clamp. Never use grease.
  • The electrolyte level should be maintained between the Min & Max lines.
  • Topping up should be done with distilled water only.
  • Keep the vent holes clean.
  • Never install a lower capacity battery than recommended.
  • Do not disconnect the battery when the generator is running.


       All generators have built-in alarms to mark low-fuel levels. Add fuel to the fuel tank if there is a low fuel alarm. Running the generator with low fuel can be very harmful in the long run. There is a chance of air entry in the fuel lines if the generator is continuously run on low fuel. The entrapped air in the fuel lines will cause many complications. 


      If you notice any leakage in the generator, it is better to call an authorized technician. Sometimes a leakage like appearance can be noticed if the generator is not in use for a long time. This happens due to wet stacking. This happens when carbon, unburnt fuel, lubricating oil and moisture is accumulated. When this happens, run the generator for a few hours and the wet stacking will simply burn off.   

If the information given above is not enough to fix your problem, then you must contact the manufacturer of the authorized service dealer.

To know more about our products visit us at or talk to our expert technicians at 1800-419-1999  

Wednesday, 14 October 2020

Renting vs Buying a generator

 Once the sizing of the generator is done, the next big question is whether to buy a new generator or take one on rent. Well, there is no right or wrong answer to this question. In this article, we will discuss the factors to consider before making a decision. After considering all the points, you can decide which one is the most suitable option.

Advantages of renting a generator:-

  •   Renting a generator takes only a fraction of the cost of buying a new genset. If you have a limited budget, then renting is the best option.

  • Rental providers take care of the maintenance and repair of generator throughout the rental period. Therefore, no maintenance hassles and minimum risk of downtime. 

  • It offers the flexibility of generator size. Once a particular project is over a different rating of a generator can be chosen for the next project. 

  • Rental generators are designed as a plug and play option. It does not require detailed installation planning as the permanent installations do.

  • Renting is a good option if the generator is needed for a short duration. If long periods of renting are required, better to calculate the renting cost beforehand. If the total renting cost approaches closer to the purchase cost, then buying will be the better option. 

Advantages of buying a generator:-

  • The prime reason for buying a genset is the need for long term use. Here are the major advantages.
  • You will own the asset and not bind by any rental agreement. You can resell your asset anytime.
  • In large projects where generator requirement is for many months, the rental cost of a big commercial generator will reach the purchase price quickly. Obviously, in such cases, buying may be the right option.

To summarize, a sufficient amount of homework and calculation has to be done before making the decision of buying or renting a generator. Choosing the right vendor is also an important decision to make. Do check the background of the vendor and check the customer feedback. 

Mahindra Powerol is in the business for more than a decade. We can help you in making the decision. For any query, you can call us at 1800-419-1999 or visit our website at:-


Friday, 25 September 2020

Changing Oil Filter in a Diesel genset.

 A diesel genset is a specialized piece of engineering and it needs specialized upkeep and maintenance. And one of the many ways to ensure that it keeps performing to its optimum standards is to change the oil filter regularly. 

The frequency of oil filter change depends on the size of the generator. 

Cleaning the Centrifugal Lubricating Oil Filter 

Before you begin the process of changing the filter, it is recommended that you switch off the engine and allow time for lubricating oil to go back to sump.

   Ø  Remove the cover nut and lift off the filter body cover.

   Ø  Check the "O" ring for damage and change if required. 

   Ø  Remove the rotor assembly from the spindle and wait for the oil to drain from the nozzle before detaching from the filter body. Hold the rotor body firmly and remove the rotor knurled nut. Separate the rotor cover from the rotor body. Remove the central stand tube.

   Ø  Clean the sludge from the inside of the rotor cover with a wooden implement. Make sure it is wiped clean. 

  Ø  Clean and wash out the central stand tube using an approved solvent - make certain that the strainer holes are not blocked.

  Ø  Clean out nozzles with a brass wire to ensure smooth and free passage of oil. Check the top and bottom bearings in the rotor body - they should be free from damage and/or excessive wear and tear. 

  Ø  Completely Reassemble the rotor. Tighten cover nut to 9.5 Nm - 10.8 Nm (7-8 lbft.)

  Ø  Closely check the spindle journals - they shouldn’t be any damage or excessive wear. Then remove the cut-off valve plug from the filters only and the cut-off valve assembly.  Make sure that the spring and shuttle are in good condition and move without any hindrance. Examine the gasket and replace if damaged or worn out. 

  Ø  Re-assemble cut-off valve assembly.

  Ø  Re-assemble the filter fully. It is important to make sure that the rotor assembly is free to rotate. Now, replace the filter cover and tighten the cover nut. 

  Ø  Switch on the engine and with the engine running check all connections and joints for any leakage.

Cleaning Engine Oil and Standard Spin-On Type Lubricating Oil Filters

Switch off the engine and place a container of at least 148 litres capacity (32.5 gal) below the drain plug. 

Now remove the drain plug and allow the oil to drain. 

It is advised that this procedure be best carried out while the engine is still warm - the thinner oil will drain more efficiently. As the oil is draining, remove the three oil filters by turning them clockwise with a strap wrench. 

Wipe the sealing faces and threaded bosses of the oil header. Smear engine oil on the captive rubber sealing ring and carefully screw each new filter using firm hand pressure only.

Refit the drain plug and fill the engine with the appropriate grade of new oil. Manually set the air shut off valves to the run position and hold the stop lever in the stop position. Start and crank the engine over until the oil pressure gauge registers 0.4 kg/cm2 (5lb/in2).

Continue cranking for a further 10 seconds - this will ensure that the oil has reached the turbocharger bearings. Stop cranking the engine and visually check the engine for oil leaks, top up the oil level.

Cleaning the Optional Changeover Lubricating Oil Filters

A three-way change-over valve in the head enables the elements to be changed, one at a time, whilst the engine continues to run. They are normally mounted on the engine, but may be remotely mounted, and connected to the engine by means of flexible pipes.

Changing the Filter Elements without Stopping the Engine

The normal position of the change-over valve is the leg of the inverted T pointing upwards - when both filter elements are in circuit. Turning the tine valve so that the leg of the T points to the left, puts the right hand filter out of service - this lets it be replaced by a new filter. Turning the valve so that the leg points to the right, puts the left hand filter out of service, so that this one can now be exchanged with a new filter canister. The valve is then returned to its original position, so that both elements of the filter are back in service. 

Remember that regularly changing your oil filters in your diesel gensets will prolong its life.

To know more about our products visit us at  or talk to our expert technicians at 1800-419-1999  

Tuesday, 21 July 2020

Gas gensets industry: Markets, trends and industry players.

The growth of the global gas genset market and its future trends is of great importance to all the players in the industry. Here is a snapshot of things to come.

During the period 2018 to 2023, the growth was predicted to be a steady 5%.

Growth contributors and inhibitors:-

Since the global genset market is ruled by diesel gensets that are increasingly being regulated because of their emissions, gas gensets that are not environmentally toxic are expected to benefit from these developments. 

Also, the gap between supply and demand of electricity will have a positive demand for gas gensets. Gas gensets can be used in a variety of industries, do not have emissions and are used as a backup when electricity fails - these factors make them even more popular. Add the volatility of oil prices and you have a scenario that looks quite bullish for the gas gensets industry.

Gas Genset Market Segmentation :-

The gas gensets industry can be categorized according to fuel, power rating, application and end-user.

The fuel category can be further subdivided into bio-gas, natural gas, and others. Natural gas is the leader in the market in this subcategory thanks to easy availability of natural gas across many geographies. 

Under power rating, we have ratings up to 100 kVA, 100-350 kVA, 350-1000 kVA, and more than 1000 kVA.

The Application-based sub category includes Peak Sharing, Continuous and Standby. Standby is leading since 2017 and is expected to dominate soon.

In the end-user sub category, the market for Residential gensets is expected to grow rapidly. The other players in this category are Commercial and Industrial. 

Regional Markets:-

According to the MRFR report, North America, APAC, Europe, the Middle East and Africa and South America will demand the highest number of gensets. 

Thanks to the availability of natural gas, it’s low prices and demand USA continues to be the biggest market for gas gensets. 

Rapid industrialization in countries such as India and China will also lead to a high demand for gas gensets in APAC markets. Stringent regulations on greenhouse gas emissions, inadequate power supply will boost demand in these markets. 

In Europe, rising demand for eco-friendly gensets and rigid regulations are creating demand for gas gensets. 

Significant Players:-

According to the MRFR report, the key players in the category are Mahindra Powerol, Cummins, MTU On-site Energy, Caterpillar, General Power Systems, Siemens, AG, GE, ABB and others.

Mahindra Powerol deals in gas gensets that are extremely efficient and robust.
To know more about our products and the industries we cater to visit our website at: - or call us at 1800-419-1999

Friday, 29 May 2020

Electric Utilities to thrive in the Electric Vehicle revolution!

There is a global shift taking place towards the choice of fuel for automobiles. From fossil fuels, the choice is shifting to electricity. A strong public sentiment and government initiatives are supporting this shift. All major car makers are coming up with their EV models. Government’s initiatives of Transport Electrification (TE) and infrastructure development is fueling the growth of EVs and made it as one of the fastest growing business segments.

The Automobile Battery is the major contributor to the cost of ownership of an EV. The major focus is on the optimizing the battery cost and charging time. With technological advancement, the cost of the batteries are decreasing steadily. The cost per kWh of an EV battery was $150 to $175 in 2017. It is expected to decline further to $80 to $105 by 2025 and $70 to $90 by 2030. With declining battery cost and increased capacity, the economics of buying an EV becomes more favorable.


To harness business opportunities from this buzzing EV market and the growing TE market, the electric utility companies are busier than ever.
The power demand for charging the EV's are negligible. But the charging grids will face challenges like:

§  Peak hour load management.

§  Discover nearby charging stations.

§  Offer attractive rate plans and offers to customers.

Opportunities lie on the smart and intelligent solution to address the challenges mentioned above. There is also a promising market for infrastructure development to support the government’s plan for Transport Electrification.

Electric Buses, fleets of shared mobility EV's will require highly efficient and professional support for charging and maintenance.

There will be increasing demand for a smart solution for home charging in residential complexes with slow charging during the night and fast charging option in the daytime.

Some innovative concepts like Shared Charging or charging via appointment can be worked upon. Dynamic pricing can encourage customers to charge their EV's during off-peak hours and reduce load during peak hours.  

Electric utilities will immensely benefit from the growing EV market. They will play a major role as service providers and will be partners in building a greener future.