Service by brand
Eaton and Powerware UPS service: maintenance, repair and batteries
We maintain and repair Eaton three-phase UPS systems across Canada: 93PM, 93PS, Power Xpert 9395 and 9355, the discontinued 93E, 9390 and BladeUPS, and older units that still carry the Powerware name. We are a Canadian UPS service and supply provider since 2012, not Eaton. Same-day service in Montreal, Quebec City, Toronto and Ottawa; 24 to 48 hours elsewhere in Canada.
Key facts
- Preventive maintenance: very little needed, with periodic inspection of units and batteries (93PS guide)
- Bolted connections: re-torqued periodically (93PS guide)
- Battery temperature for maximum service life: +20 °C to +25 °C (93PS)
- Retired phase: no contract coverage; time and material services available (Eaton EOSL table)
- Warranty period: 12 months from the original date of purchase (93PS guide)
What we service
Current Eaton three-phase families, each with its model page:
Discontinued families we still maintain:
Powerware-badged systems are serviced the same way as their Eaton successors.
Preventive maintenance
Eaton's 91PS/93PS guide says the UPS requires very little preventive maintenance, and still asks for periodic inspection of the units and batteries, with bolted connections re-torqued periodically. Our visit does that and covers the parts that wear: batteries, fans, filters and capacitors, with the event log and a written report.
The full checklist: Eaton preventive maintenance.
Repair
A red alarm indicator, a unit stuck on bypass, a module or charger fault, a battery string that no longer holds its runtime: we diagnose from the event log and the measurements, quote the part and the labour, and return the unit to normal operation with a test.
Faults, alarms and what to do first: Eaton UPS repair.
Battery strings and cabinets
Eaton's 93PS guide recommends +20 °C to +25 °C to maximize battery service life, and its warranty covers batteries against failures in material and workmanship, not against normal aging and loss of ampere-hour capacity. An aged string is a maintenance item: we measure each block, replace the string as a set and size the new one to the runtime you need.
On-site battery work: UPS battery replacement.
Eaton and Powerware fleets under contract are covered on the Eaton and Powerware maintenance services page, and battery kits for smaller Eaton units are in the Eaton replacement battery catalogue.
Legacy models and Eaton's lifecycle phases
Eaton publishes a service phase for each model in its End of Service Life master table. In the Mature phase, Eaton's own definition is best efforts: parts may be limited and product replacement is recommended. In the Retired phase there is no contract coverage from Eaton, but time and material services are available and preventive and battery services may be. A unit in either phase can still be maintained, and that is where most of our work on older Eaton and Powerware equipment sits.
When a replacement makes more sense: replacing a discontinued three-phase UPS.
When Eaton should do the work
A unit inside Eaton's warranty goes to Eaton: the 93PS guide gives twelve months from the original date of purchase, with repair or replacement made by Eaton or by a service provider Eaton approves. A new unit's start-up belongs with Eaton for the same reason. After that, maintenance, repairs and batteries can be done by us.
Coverage and quotes
Same-day service in Montreal, Quebec City, Toronto and Ottawa; 24 to 48 hours elsewhere in Canada. We reply and quote within 4 business hours. Tell us the brand, the model and the symptom or the visit you need, and the quote comes back with the scope and the date.
We also service Vertiv / Liebert, Tripp Lite and Mitsubishi three-phase systems.
Our UPS services
Service by brand
Engineering guides
Related pages
Common questions
Do you service Powerware UPS systems?
Yes. Older units that still carry the Powerware name are serviced the same way as current Eaton models: preventive maintenance, repairs and battery strings.
My Eaton UPS is discontinued. Can it still be maintained?
Yes. Eaton's End of Service Life table puts older models in a Mature or Retired phase; even in Retired, time and material services remain available. We maintain those units while parts and batteries can be sourced.
Do you work on the 93PM and the Power Xpert 9395?
Yes, along with the 93PS, 9355, 9PHD and the discontinued 93E, 9390 and BladeUPS, battery cabinets included.
Do you replace complete Eaton battery strings?
Yes. We measure each block, replace the string as a set and size the new string to the runtime you need.
How fast can a technician come?
Same-day service in Montreal, Quebec City, Toronto and Ottawa; 24 to 48 hours elsewhere in Canada. We reply and quote within 4 business hours.
Sources, checked October 4, 2026:
- Eaton, 91PS/93PS 8 to 40 kW user's and installation guide P-164000493, pp. 16, 109, 110, 118
- Eaton, UPS end of service life master table PL161010EN (revision 05/29/2026), p. 1
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Brand names are trademarks of their owners and are used only to identify the equipment we service. We are not the manufacturer and are not affiliated with it.