Diesel Generator Services & Maintenance

Our Services:

  • New Diesel Generator Sales

  • Generator Installations

  • Generator Commissioning

  • Generator Repairs & Fault Diagnostics

  • Planned Preventative Maintenance (PPM) Contracts

  • Load Bank Testing & Certification

  • Fuel Polishing & Tank Cleaning

  • Generator Relocation & Decommissioning

  • Control Panel Upgrades & Retrofits

  • Remote Monitoring Systems

  • ATS (Automatic Transfer Switch) Supply & Installation

  • Battery Charger & Start System Replacements

  • Site Surveys & Power Assessments

  • Custom Acoustic Enclosures & Canopies

  • Spare Parts Supply (Engines, Alternators, Filters, etc.)

Open industrial generator with internal components, batteries, and exhaust pipe in sunlight.

Expert Generator Maintenance from Blackwell Generators

At Blackwell Generators, we understand that owning a diesel generator is only part of the solution — ensuring it performs reliably when you need it most requires a proactive, professional maintenance plan. That’s why we offer comprehensive generator maintenance contracts tailored to your needs, load profile, and operational environment.

Our service packages are designed to prevent failure, extend equipment life, reduce repair costs, and keep your generator compliant with insurance, health and safety, and manufacturer recommendations.

Why a Generator Maintenance Contract Is Essential

Unscheduled generator failures almost always happen at the worst time — during critical power outages. The root causes are usually preventable: battery issues, fuel contamination, coolant loss, or oil degradation. With a maintenance contract in place, these risks are dramatically reduced.

Benefits of a Blackwell Maintenance Contract:

  • Scheduled service intervals (quarterly, bi-annual, or custom)

  • Full compliance with manufacturer servicing schedules

  • Genuine parts used to maintain warranty protection

  • Detailed service logs and inspection reports

  • Optional 24/7 emergency support

  • Load testing and fuel quality checks

  • Fixed-cost budgeting with no hidden surprises

What's Included in a Maintenance Contract? Our service contracts are tailored to each installation and can include the following:

Scheduled Preventative Maintenance:

  • Engine oil and filter changes

  • Fuel filter replacement

  • Air filter inspection and cleaning

  • Coolant top-up and quality check

  • Battery condition testing and terminal cleaning

  • Inspection of belts, hoses, and wiring

  • Alternator and starter motor function checks

  • Control panel diagnostics and firmware checks

Load Testing:

  • Resistive or reactive load testing (on-site or via mobile load bank)

  • Verifies generator performance under simulated operating conditions

Compliance Documentation:

  • Detailed digital service reports after each visit

  • Fault diagnosis reports and recommendations

  • Compliance paperwork to support HSE and insurance audits

Optional Services:

  • Remote monitoring setup and alerts

  • Fuel polishing and tank inspections

  • Emergency call-out service with rapid response

Book a Site Assessment

Maintenance Plans for All Generator Types. Whether you operate a 20 kVA standby unit or a 1000 kVA prime power system, we provide plans to suit:

Standby Generators:

Typically require 1–2 services per year, focused on readiness and battery integrity.

Prime Power Generators:

Running daily or around the clock? You’ll need a more frequent schedule, usually based on hours of operation.

We maintain:

  • Diesel generators of all sizes and makes

  • Perkins, Cummins, Baudouin, Volvo, Deutz, and other engine types

  • Single and three-phase installations

  • Silent, containerised, and open-frame units

Request a Quote for Maintenance

Why Choose Blackwell Generators?

We’re not just another service provider - we’re generator specialists.

  • UK-wide service coverage

  • Engineers trained across multiple engine platforms

  • Access to genuine OEM parts

  • Competitive rates with flexible terms

  • Rapid response and clear communication

Every generator we maintain is treated as mission-critical. Our goal is to ensure your equipment performs flawlessly every time.

Getting Started

  1. Initial Site Survey – Our team assesses your equipment and site layout.

  2. Tailored Plan Proposal – You receive a recommended service frequency and quote.

  3. Scheduled Visits Begin – Servicing begins in line with agreed terms.

  4. Ongoing Support – Full documentation, technical assistance, and emergency support.

Get in Touch to arrange your free consultation today.

FAQ: Generator Maintenance Contracts

How often should my generator be serviced?

  • Standby generators: at least once or twice annually

  • Prime power generators: typically every 250–500 running hours

Can you maintain generators not purchased from Blackwell?

Yes. We maintain all major generator brands, even if they weren’t purchased from us.

Do I need to be on-site during servicing?

No - as long as we have access and permission, we’ll handle it and send you a full report afterward.

What if my generator breaks down?

We offer optional 24/7 emergency cover as part of our premium maintenance packages.

Don’t wait until your generator fails - secure a Blackwell maintenance contract and ensure your power is always protected.

Contact Us Now to speak to a generator servicing expert.