Planned Maintenance
Routine and preventative maintenance that protects your plant, reduces emergency costs and extends your equipment’s life

Planned Maintenance Services
Unplanned equipment failures in industrial environments are rarely just an inconvenience; they carry real costs in lost production, extended downtime and emergency callouts.
Castlet’s planned maintenance service exists to prevent these scenarios, keeping your industrial equipment in optimal condition through regular inspection and servicing.
Our planned maintenance visits are thorough, methodical and carried out by engineers who know industrial power and control equipment inside out, meaning we can catch and diagnose any issues before they become a problem.
Who We Provide Planned Maintenance For
Castlet’s planned maintenance services support plant operators, maintenance teams and engineering managers across a wide range of industries.
This includes:
We supply equipment to a range of sectors and will provide each of them with planned maintenance consultations when required.
Our maintenance service can be applied to a wide range of Castlet and non-Castlet-supplied equipment, regardless of age, giving operators confidence in their maintenance programme.
The Benefits of Planned Maintenance
The case for planned maintenance is straightforward: the cost of a structured, scheduled visit is consistently lower than the cost of an emergency response, and far lower than the cost of a major failure.
By carrying out a regular, scheduled programme of maintenance and checks, our engineers can identify issues early and extend equipment life where possible.
This service is designed to deliver that protection and peace of mind consistently, visit after visit. It also provides equipment stability, lifetime extension and avoids costly failures and downtime.
Consistency; the same engineers with bespoke OEM knowledge who designed the products will treat any faults. This continuity ensures our engineers get a better understanding of your plant, objectives and unique requirements, and can provide a high level of ongoing support.
Why Choose Castlet?
At Castlet, we combine technical expertise, global capability, and a customer-focused approach. Our engineering team is comprised of highly skilled professionals with extensive experience across a wide range of industries and applications.
By working closely with trusted global partners in countries including Australia, Brazil, Mexico, South Africa and more, we ensure smooth communication, compliance, and efficient on-site execution.
Our collaborative approach extends to interfacing with third-party equipment and systems. We understand other operating systems and can provide expert support on equipment from a range of international suppliers.
With Castlet, you gain a partner committed to delivering precision, reliability, and long-term value, ensuring you’re supported with regular, planned checks and maintenance.
Specialist services from industry experts

Commissioning

Optimisation

Calibration

Remote/Online Services

Spares and Repairs

Planned Maintenance

Emergency Callouts

Environmental Chamber Testing
Castlet, 18 February 2026
Case Study: Planned Maintenance Helping to Identify Decline at a UK Waste-to-Energy Facility
The Challenge
Our client, a UK based waste-to-energy facility, had transformer rectifiers at their plant. Operating in challenging conditions, over time their tanks being heavily corroded due to prolonged exposure to standing water.
Our Solution
Through a proactive, planned site visit, our engineers spotted this issue before it became costly. We implemented a staggered refurbishment programme, minimising downtime while providing updated components for the equipment.
The Outcome
The 10 refurbished transformer rectifiers were delivered safely back on site two-by-two, with downtime avoided throughout the process. This would not have been possible without planned maintenance, with our team spotting, diagnosing and solving the problem before it became a serious risk.






