Dedicated to top-tier fast service
AC Motor Repairs
When an AC motor fails, production stops. Mawdsleys BER provides fast, accredited AC motor repair for industrial and commercial motors from 1kW to over 1,000kW.Our engineers carry out a full mechanical and electrical inspection on every motor, diagnose the fault, and repair it to original specification in our ISO 9001:2015 accredited Bristol workshop.
Why businesses choose Mawdsleys for AC motor repair
- Fast turnaround — swift AC motor repairs, minimising your downtime
- Full diagnostic on every motor — mechanical and electrical inspection, winding resistance and insulation testing, rotor balance check
- In-house capability — rewinds, machining and balancing all under one roof, so nothing is outsourced or delayed
- ISO 9001:2015 accredited with full traceability — every job logged, tested and reported
- AEMT Ex Registered Repairer — certified for ATEX and hazardous-area motor repair
- Nationwide coverage from our South West workshop, with courier collection or site-based repair for motors that can’t be removed
Our AC motor repair process
- Receipt & traceability — your motor is logged into our digital job tracking system on arrival, giving you full visibility of progress.
- Full inspection — mechanical and electrical diagnostics identify the exact cause of failure, with findings recorded on a detailed job card.
- Winding test — we test for faults, resistance and insulation quality. If the stator is compromised, it’s rewound to original spec using high-grade enamelled copper and class-rated insulating varnish.
- Rotor check & balancing — condition, balance and tolerances are confirmed against manufacturer specification.
- Rebuild & test — the motor is reassembled and run in our test facility before it’s signed off.
- Report & return — you receive a full repair report, and the motor is shipped or delivered back ready to install.
Signs your AC motor needs repair
Don’t wait for a full breakdown. Common warning signs include:
- Unusual noise or vibration
- Overheating
- Burning smell or visible smoke
- Reduced performance or output
- Failure to start
- Frequent tripping of circuit breakers
Catching these early usually means a cheaper, faster repair — and avoids unplanned downtime.
Repair or replace? What to consider
Not every faulty motor needs replacing. A few factors that should shape the decision:
- Age — an older motor can often be repaired faster and more cost-effectively than sourcing, shipping and installing a replacement. But if it’s near end-of-life, a modern, more energy-efficient motor may pay for itself over time.
- Output/usage — for smaller motors used infrequently, repair is usually the more cost-effective route. Higher-output motors make the cost of downtime — and therefore of delay — much more significant.
- Time — a quality repair can be done in as little as 24 hours. Replacement means sourcing, shipping and fitting, which is almost always slower and more disruptive.
Not sure which makes sense for your motor? Get in touch for a straight answer — we’ll tell you honestly if repair isn’t the right call.
This is why
1. Speed of service
Reducing your downtime is our main priority. That’s why, from the moment you call to the final report, we move fast. No delays. Just results.
2. High-quality service
With over 100 years experience, we’ve built a reputation on precision, excellence, and constant improvement. You expect the best—we deliver it.
3. One-stop shop
The vast experience of our staff, combined with our state-of-the-art workshop, provide us with flexibility. We do not only repair – we manufacture.
4. ATEX motors specialists
Repairing all types of ATEX motors. We are an AEMT Ex Registered Repairer recognised for our quality systems and professional repair standards.