UPS repair in Canada

Intro

Your UPS won’t turn on, it shuts itself off, or it keeps failing its self-test. This is how we find what failed in APC, Eaton, Tripp Lite and Liebert UPS, and how we fix it. And when repair stops making sense, we tell you.

Why it matters

At a group of municipal buildings in the Montreal region, a UPS kept failing its self-test. The batteries were worn out. But an internal communication fault was failing the test too. And the power strips in the rack were overloaded, with their connectors running hot. New batteries alone would not have cleared it. Here’s how we find the real cause.

One. What fails most

One: what fails most. Batteries, by far: worn-out batteries show up in about a third of our service reports. Next come the parts that wear with time: fans, capacitors, and the power boards and modules. Heat and dust wear all of them faster. At a cement plant, a Liebert NX and a Toshiba UPS needed dust cleaning and a new fan bearing. And communication: a network card or firmware fault can make a working UPS look like a failed one.

Two. On site or on our bench

Two: on site or on our bench. Large and three-phase UPS are repaired where they stand, with your equipment on the maintenance bypass while we work. Smaller rack and tower units can come to our bench in Montreal, where we test them under a real load. On one bench test, two small custom-built 1 kVA online UPS carried 72 percent of their rating for a few seconds, then collapsed and kept cycling. Neither was fit for the job, and the bench showed it before they went into service.

Three. Finding the real cause

Three: finding the real cause. An alarm tells you where the UPS felt the problem, not always where it started. At a food plant in southern Ontario, a 300 kVA Mitsubishi had logged an inverter fault. The plant had run on bypass for two months. The first cause was a worn-out battery string dragging the DC bus down. We installed new batteries, then planned a full shutdown to test the inverter itself. Small units too: at a transportation hub, one APC Smart-UPS SRT refused its self-test with two-year-old batteries, and another showed a logic fault. We recommended replacing those two units and keeping the rest of the fleet. If your UPS went to bypass on its own, it did that to keep your equipment powered. But on bypass, nothing protects the load.

Four. When repair stops making sense

Four: when repair stops making sense. Age comes first. Small single-phase units reach the end of their life around eight to ten years. Mid-size three-phase units, around fifteen. Then parts. Tripp Lite’s SU8000 and SU10000, for example, are discontinued, and spare parts are gone. At a network operator in the Toronto area, a 24-year-old Powerware 9315 lost its capacitors. All 90 were replaced, and the static bypass had failed too. We quoted the repair, with its risks. We recommended a modular replacement with new batteries. When it’s close, you get both options in writing, so you can decide.

Five. What to send us

Five: what to send us for a fast quote. The make and model, the serial number, and a photo of the rating plate. A photo of the display with the alarm or error code, and what happened just before. And the size of the load, if you know it.

Recap

To recap. Batteries fail most, then fans, capacitors, boards and communication. Heat and dust speed all of it up. Large UPS are repaired on site. Smaller units can come to our bench. We follow the fault to its cause, not just to the alarm. When age or parts make repair a poor bet, we tell you, and you get both options in writing.

Takeaway and outro

If the alarm comes back after new batteries, something else is failing. Have the whole UPS checked. GDF Technologies repairs UPS across Canada. We offer support when you need it, and when something fails, we’re there day or night. We also offer extended warranties on parts and labour. And when it’s time for a new UPS, we do the consulting and engineering with you, from configuration to delivery and installation. Call us, or ask for a quote at gdftech.com. You’ll hear back within four business hours.