Generator Service & Maintenance

Ensuring a reliable power supply for your operations involves more than just installing a generator; it demands regular generator servicing and maintenance. At P&I Group, we specialise in providing professional generator servicing and generator maintenance to keep your critical power systems performing optimally.

From emergency generator servicing to routine power system maintenance, our experienced technicians have the skills and knowledge to meet all of your power needs, providing you with peace of mind and seamless operations.

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Emergency Call Out Service

Rapid 4-Hour Engineer Dispatch*

24 hours a Day

365 Days of the Year

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Reliability Beyond Expectations: P&I Group provides a dedicated 24/7 emergency call-out service, 365 days a year. Whether it's a public holiday or the middle of the night, our commitment to your power needs is unwavering. And, in case of an emergency, our promise is to have an expert engineer at your site within 4 hours. We're not just your service provider, we're your steadfast partner in ensuring uninterrupted power, all day, every day.

*UK mainland contract customers only.

Generator Service & Maintenance

Generator Service & Repair

Generator servicing is a crucial aspect of maintaining the longevity and efficiency of your critical power systems. Regular inspections and servicing not only prevent unexpected breakdowns but also ensure that your generator operates at optimal performance. At P&I Group, our experienced specialists undertake a comprehensive check and maintenance process to keep your power systems running smoothly and efficiently.

Maintaining a consistent power supply is critical for any business. In many industries, even a brief power outage could lead to significant financial losses, disrupted operations, and potential safety hazards. This is where regular generator servicing steps in as an essential preventive measure.

We don't merely inspect and service your generator; we provide a comprehensive maintenance process that anticipates potential issues before they become significant problems. This involves assessing the general condition of the generator, checking oil and coolant levels, inspecting belts and hoses, and verifying control panel readings and indicators. All while ensuring the generator's output is stable and within acceptable parameters.

Generator Service & Maintenance

The Importance of Annual Generator Servicing

Just as your car needs regular maintenance to run smoothly, your generator requires the same care. A generator is an investment in your business's continuity and security, and routine servicing is a crucial part of protecting your investment.

At least once a year, your generator should undergo a comprehensive service to ensure it's ready to perform when you need it most. This annual checkup allows us to spot and address minor issues before they turn into costly generator repairs or major system failures. It can significantly extend the lifespan of your generator, maintain its efficiency, and prevent the inconvenience of unexpected downtime.

More importantly, an annual service ensures your generator complies with warranty conditions and safety regulations. It's not just about keeping your operations running - it's also about ensuring the safety of your premises and people.

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Safe Contractor
CQS 14001
Supply Chain sustainability school
ISO 9001
Riello Certified Engineer
Constructionline Gold
CQS 18001
Riello Service Partner
Achilles UVDB

What is Covered in a Planned Generator Maintenance?

A General Inspection:

We assess your generator's overall condition, pinpointing any visible signs of wear and tear that could impact performance.

Oil and Filter Change:

We carefully monitor oil levels and replace as necessary, including changing the oil filter, to ensure efficient lubrication.

Coolant Level and Antifreeze:

We check and manage the coolant level and antifreeze concentration, ensuring your engine maintains its optimal temperature.

Fuel System:

We examine the fuel system for any signs of leaks or blockages, clean the fuel filters, and ensure high fuel quality.

Air Filter Maintenance:

We clean or replace the air filter, a vital step in maintaining the generator's performance efficiency.

Belts and Hoses:

We inspect the belts and hoses, looking for signs of wear, cracks, or looseness, and replace them as needed.

Battery Condition:

We scrutinise your battery's charge, clean terminals, and guarantee secure connections.

Control Panel:

We verify that all control panel readings and indicators are working correctly, so you're never left in the dark about your generator's status.

Output Checks:

We rigorously test your generator's output to make sure it's operating within acceptable parameters.

Transfer Switch Testing:

We test the automatic transfer switch operation to ensure a seamless transition during a power outage.

Exhaust System:

We inspect the exhaust system for any signs of leaks or damage, making sure it's safe and compliant.


We confirm that all moving parts are well-lubricated, preventing unnecessary friction and wear.
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At P&I Group, we're committed to delivering a meticulous generator servicing process that caters to every facet of your generator's operation, ensuring your critical power systems remain reliable and efficient.
We have a solution for every type of budget

If you would like to discuss your generator service and maintenance requirements, contact our team on 02392783450, or by completing the contact form.

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Frequently Asked Questions