Sentrimax is an independent MRO provider that repairs Alfa Laval decanter and separator centrifuges, including Aldec-series and G-series machines, at its Mansfield, Edmonton and Kitchener facilities. Work covers full teardown, precision machining, parts manufacture, dynamic balancing and test runs. Sentrimax has no dealer, distribution or sponsorship relationship with Alfa Laval AB.
An independent shop, not an Alfa Laval dealer
Sentrimax Centrifuges is an independent maintenance, repair and overhaul provider founded in 2002. It has no dealer agreement, distribution arrangement or sponsorship relationship with Alfa Laval AB, and it does not present itself as connected to the manufacturer in any way. The Alfa Laval model names on this page identify the equipment Sentrimax repairs; they are not a claim about who makes the parts, who trained the technicians, or who Sentrimax answers to. Plants send Alfa Laval decanters to Sentrimax because the shop can hold the fits and balance tolerances the machine needs, not because of a badge on the wall.
That distinction matters more than it sounds. A shop that claims a formal dealer tie to Alfa Laval is making a claim about a business relationship. A shop that says plainly it is independent is making a claim about capability instead — machining, balancing, welding, controls and reverse engineering, verified by what comes off the test stand, not by a logo. That is the basis on which a plant should be evaluating any repair vendor, Alfa Laval or otherwise.
Alfa Laval models Sentrimax services
Sentrimax works on Alfa Laval decanter and disc-stack platforms across the 8″ to 43″ bowl diameter range the shop covers generally, with particular experience on the Aldec and G-series product lines.
| Model family | Configuration | What Sentrimax handles |
|---|---|---|
| Aldec 506 and related Aldec-series units | Decanter centrifuge | Full disassembly, bowl and scroll repair, gearbox rebuild, dynamic balancing, test run |
| G2-100 and related G-series units | Decanter / separator line | Precision fit inspection, parts manufacture, reassembly, balancing to ISO G 0.5 |
| Other Alfa Laval decanter and disc-stack models, 8″–43″ bowl diameter | Decanter, tricanter or disc stack | Fit evaluation, inspection report, machining, balancing, test run |
A model that is not named above is not a model Sentrimax turns away. The shop evaluates equipment against its published bowl diameter range and configuration, not against a fixed parts catalog, which is the point of an independent overhaul provider in the first place.
Balancing standard, fit tolerance and test protocol stay the same across every Alfa Laval unit Sentrimax touches, whichever specific model it is. That consistency is deliberate: a plant should not have to worry that a less common model gets a lower standard of inspection than the more frequently seen ones.
Why an independent shop still matters for a current fleet
Alfa Laval’s decanter and separator lines are largely current production, and that changes the argument for independent service without eliminating it. The case for Sentrimax on a current-generation machine is not that OEM parts are unavailable. It is that a single-source parts and service relationship concentrates risk that a plant does not need to carry. Lead time on an OEM part is set by someone else’s production schedule and someone else’s queue. A shop with its own engineering and machine shop — milling, lathe-turning, precision grinding, and the ability to design new or reverse-engineered parts — gives a plant a second source that does not depend on any one supplier’s backlog.
The same logic applies to the gearbox. Alfa Laval decanters are commonly built around planetary reduction gearboxes, and Sentrimax’s gearbox capability covers two- and three-stage planetary units, CYCLO gearboxes and hydraulic backdrives — work that can be scoped and repaired alongside the bowl and scroll rather than shipped out to a second vendor.
Independent does not mean improvised
Every Alfa Laval unit Sentrimax rebuilds goes through the same documented process used on every other brand: parts manufactured to meet or exceed OEM specifications, balancing to ISO G 0.5, and a full test run before it ships.
What happens to an Alfa Laval decanter once it arrives
Sentrimax runs every incoming centrifuge, Alfa Laval included, through the same ISO 9001:2015 process rather than an ad hoc teardown.
- Inspection and quote. The unit is documented and ID-tagged, an oil sample is pulled for third-party analysis, and the rotating assembly is disassembled, steam-cleaned and polished on critical surfaces before a licensed technician completes a 75-point inspection and measures all critical precision fits. The result is a quotation package with a full inspection report, scope of work, required parts, photos, pricing and an estimated delivery time.
- Repair. Once the scope is approved, parts are manufactured or sourced to meet or exceed OEM specifications, welding and machining bring components back to OEM tolerances, the unit is balanced to ISO G 0.5, reassembled, inspected again by a technician, and run on the test stand with a performance report generated.
- Delivery. The rebuilt Alfa Laval centrifuge ships through Sentrimax’s broker network with a detailed invoice covering parts, labor and analysis, plus shipping confirmation and tracking.
What every Alfa Laval job includes
- Fit evaluation against OEM tolerances
- Detailed, annotated inspection report
- Dynamic balancing, up to ISO G 0.5
- Full test run with performance report
When to stop running an Alfa Laval decanter
Rising vibration, unusual gearbox noise, or a widening gap between actual and rated throughput are all reasons to pull a decanter for inspection before a bearing or bowl failure turns a repair into a rebuild. Waiting for a scheduled outage is reasonable; waiting for the machine to tell you it is broken is not.
Where the work actually happens
Sentrimax operates three facilities — Mansfield, Texas; Edmonton, Alberta; and Kitchener, Ontario — and supports customers across North America from those three shops, with field service technicians and remote services available for on-site work that does not require a full teardown. An Alfa Laval decanter does not need a Sentrimax branch in the same city to be serviced properly; it needs to reach one of the three facilities, or have a field technician sent to it.
Parts, gearboxes and other brands
An Alfa Laval decanter rarely fails in isolation from the rest of the plant’s centrifuge fleet, and Sentrimax’s scope goes beyond the bowl and scroll. The centrifuge parts program covers OEM-spec and reverse-engineered components across brands, and the decanter centrifuge repair service page details the teardown-to-test-run process that applies to Alfa Laval units and every other decanter brand Sentrimax handles. For the full list of manufacturers Sentrimax services, see centrifuge brands and models serviced.
Common failure patterns on Alfa Laval decanters
The symptoms an Alfa Laval decanter shows before it fails are not unique to the brand, but the specifics of how the fits and clearances are built change what a technician looks for during teardown.
| Symptom | Likely cause | What the inspection checks |
|---|---|---|
| Rising vibration at operating speed | Bearing wear, bowl imbalance, or scroll wear from abrasive solids | Dynamic balance, bearing fits, scroll flight condition |
| Falling throughput or cake dryness | Scroll clearance opened up by wear, or worn conveyor flighting | Bowl-to-scroll clearance measurement against OEM tolerance |
| Gearbox noise or heat | Planetary gear wear, bearing failure, or backdrive issues | Gearbox teardown and gear tooth inspection |
| Seal leakage at the bowl end | Worn mechanical seals or scored sealing surfaces | Seal face and shaft surface inspection during disassembly |
None of these symptoms tell a maintenance manager how far the damage has gone without opening the machine. That is what the 75-point inspection and precision fit measurement are for — a documented answer rather than a guess, delivered before any repair work is approved.
Where Alfa Laval decanters typically run
Sentrimax’s Alfa Laval work spans the same range of duty the brand is built for: municipal sludge dewatering and biosolids handling, food and beverage separation, chemical processing, and energy-sector applications including produced water clarification. The mechanical fundamentals Sentrimax repairs to — bowl-to-scroll clearance, bearing fits, gearbox condition, dynamic balance — are the same regardless of which industry the unit came out of; what changes is the wear pattern the process leaves behind, and that is factored into the inspection rather than assumed from the application alone.
Controls and drives on Alfa Laval decanters
A decanter rebuild does not always stop at the bowl. Many Alfa Laval installations run on control panels and VFDs that are as old as the mechanical assembly, and a mechanical rebuild without a controls review can leave a plant with a like-new bowl driven by a drive system that is the next thing to fail. Sentrimax’s controls capability covers PLC upgrades and programming, HMI design and programming, VFD troubleshooting and replacement, and brake system integration, including ETL-certified control panel and automation support, so a decanter project can address the drive and control side in the same scope if that is where the risk actually sits.
Keeping the line running during the rebuild
An Alfa Laval decanter going out for overhaul is a process gap somewhere in the plant, and Sentrimax’s rental fleet exists specifically to cover that gap — a rental centrifuge to keep the process running while the primary unit is inspected, repaired and tested, rather than idling a line for the full duration of the rebuild.
Get an Alfa Laval decanter evaluated
Send details on the model, the symptoms and how the unit is currently deployed, and Sentrimax will scope an inspection at whichever of its three facilities makes sense for the shipment.
Frequently asked questions
Does Sentrimax use genuine Alfa Laval parts?
Sentrimax is an independent shop and does not source through Alfa Laval's parts network. Its engineering and machine shop manufactures components designed to meet or exceed OEM specifications, and every rebuild follows the same fit and balance tolerances used across the ISO 9001:2015 process, regardless of brand.
Can Sentrimax service a G2-100 separator as well as Aldec decanters?
Yes. Sentrimax works on both the Aldec decanter line and the G-series, including the G2-100, along with other Alfa Laval decanter and disc-stack platforms within its 8 inch to 43 inch bowl diameter range.
Does Sentrimax rebuild the Alfa Laval gearbox along with the bowl?
Gearbox work is part of the same job when it is needed. Sentrimax repairs planetary gearboxes in two- and three-stage configurations, CYCLO gearboxes and hydraulic backdrives, so a decanter with drivetrain issues does not need to go to a separate vendor.
What should I send before shipping an Alfa Laval decanter for evaluation?
Model information, the symptoms driving the request, recent maintenance history and how the unit is currently mounted or deployed give Sentrimax enough to plan the inspection before the machine arrives. A photo of the nameplate is useful when the model number is unclear.
Is there a minimum bowl size Sentrimax will take on?
Sentrimax's stated range is 8 inch to 43 inch bowl diameter. A unit outside that range, or one where configuration details are unclear, is best confirmed with Sentrimax directly before shipping.
Does Sentrimax handle Alfa Laval disc-stack centrifuges, or only decanters?
Both. Alfa Laval's product range spans decanter and disc-stack machines, and Sentrimax services disc-stack centrifuges as part of its general equipment scope alongside decanter and tricanter work.
Talk to a centrifuge specialist
Send us the machine details and we will come back with an inspection scope and a quote.