Basics of Emergency Generator Repair

If your business is considering purchasing an emergency generator, you should understand the basics of maintaining the machine and how it’s serviced. It’s good to know what to expect when you invest in such a powerful machine so that you can plan for regular inspection. Here are key points to remember about emergency generator repair.

Start with Safety

When dealing with any type of powerful industrial machinery, your first concern should always be safety. That means inspecting the generator thoroughly to make sure there’s no structural damage and that there’s proper ventilation.

The generator should be encased in protective material and should be elevated to a level at which there’s no danger of it coming into contact with water. It should also not sit on top of an electrical or combustible device. Wearing the proper clothing, gloves, and eye protection is crucial for maximum safety. Keeping the machine in top shape should be a high priority, which involves checking oil, filters, the electrical system, and various parts.

Manuals and Troubleshooting

Learning how to troubleshoot for emergency generator repair starts with having a clear idea of the functions of various generator components. It’s also advantageous to learn the various types of generators that are used by commercial and industrial enterprises. Generator engines commonly run on gas or diesel fuel, while more modern systems are powered by solar and wind energy.

The top brands in the generator industry include General Motors, Ford, Mitsubishi and John Deer. A leading brand for home and business outdoor standby generators is Generac, which is powered either by liquid gas or liquid propane. Reading the instruction manual for each machine is essential. You should not deviate from the manufacturer’s instructions for troubleshooting, as it can damage equipment and nullify a warranty. When in doubt, it’s best to outsource to a professional expert.

Gaseous Modular Power Systems (MPS) are generators that can be assembled in modules, as each module adds more power to the system. It’s useful for small businesses that are able to scale up in power.

Diagnostic and Repair Skills

As a technician who performs emergency generator repair, you should be able to diagnose electrical and mechanical problems and fix them in a timely manner. Here are some of the common problems with generators to check:

  • Check the automatic voltage regulator for voltage and frequency.
  • See if the battery, relay, fuses, stator or rotor need replacement.
  • Ensure that the cooling system prevents overheating.
  • Find out if utility power is normal.
  • Inspect the fuel and air filter.
  • Make sure remote monitoring works.

Many generator specialists lack the technical expertise to perform root-cause diagnostics, which can lead to expensive and faulty repairs, according to the IEEE.


Emergency generator repair is complex and requires special training. Contact us at Gen-Tech so that our experts can answer your questions about generator maintenance. Our mentors offer quality training, which encompasses a three day power generation seminar and a learning center that provides hands on experience.

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