What Should You Do When a Centrifuge Fails Unexpectedly?

When a centrifuge fails unexpectedly, shut it down safely rather than forcing it through a cycle, record vibration, noise, fault codes and what you were processing at the time, and do not disassemble the rotating assembly or bearing housings. Call the nearest Sentrimax facility with that information plus your machine’s model and bowl diameter to start a quote.

The first hour determines how the rest of the repair goes

This sequence is the first-hour piece of Sentrimax’s wider
emergency and on-site centrifuge service capability.
An unexpected centrifuge failure is stressful, and the instinct is often to either keep pushing
the machine to finish a batch or to start taking it apart immediately to find the problem. Both
instincts work against you. What actually helps is a short, disciplined sequence: get the machine
into a safe state, capture what you can observe right now while it is fresh, and preserve the
evidence of what actually failed instead of disturbing it. This page does not promise a response
time, because that genuinely depends on the failure and what is needed to fix it — what it does
promise is that following this sequence gives Sentrimax, or any repair provider, the best possible
starting point.

Step one: shut the machine down safely

If the centrifuge is showing signs of an active mechanical failure — unusual vibration, a
sudden noise change, smoke, or a control system fault — bring it to a safe, controlled stop rather
than an emergency trip where that choice is available and safe to make. A controlled shutdown
sequence is less likely to add secondary damage on top of whatever already failed. Follow your
site’s lockout and isolation procedure fully before anyone approaches the machine.

Step two: record what you observed, while it is fresh

• The exact sequence of events leading up to the failure — what changed, what alarm or fault
  appeared first, and in what order
• Any unusual sound, vibration or smell noticed before the failure, and roughly how long it had
  been present
• Fault or alarm codes displayed on the control system or drive, photographed directly from the
  screen where possible
• What the centrifuge was processing at the time, and whether that had recently changed
• Current running hours or time since the last service, if readily available

This information matters because it separates a sudden, single-event failure from a
progressive wear failure that finally reached its limit, and those two categories point to
different likely causes.

Step three: know what not to touch

It is reasonable, and often useful, to remove external guards or covers to take photographs of
visible damage, and to drain and retain an oil sample if you can do so safely — third-party oil
analysis is part of Sentrimax’s own inspection process and a sample taken close to the time of
failure is more informative than one taken later.

Step four: gather what makes an immediate quote possible

Once the machine is safe and you have recorded what you observed, the fastest route to a useful
quote is having the following ready when you call:

1. Model identification. Manufacturer, model designation and bowl diameter,
   ideally from a nameplate photograph. See the guide to
   identifying a centrifuge model and parts if the nameplate is missing or unclear.
2. Description of the failure. What happened, in what order, and any fault codes
   or unusual behavior beforehand.
3. Photographs. Of the nameplate, of any visible external damage, and of the
   control system fault screen if applicable.
4. Maintenance history, if available. Recent service dates, prior repairs, and
   any known wear issues that had already been flagged.
5. Site logistics. Location, access constraints, and whether the process can
   tolerate the centrifuge being offline while a path forward is determined.

First-hour mistakes worth avoiding

Why an oil sample taken now is more useful than one taken later

Third-party oil analysis is part of Sentrimax’s standard inspection process because gearbox and
bearing lubricant carries direct evidence of wear and contamination — metal content, particle size,
and signs of process fluid ingress. That evidence degrades in usefulness the longer the oil sits
or the more it mixes with fresh oil added afterward. A sample drawn close to the time of failure,
labeled with the date and running condition at the time, gives a clearer picture than one taken
during a later, calmer inspection.

What happens to the information after you send it

Whichever Sentrimax facility receives your call uses the failure description, photographs,
fault codes and model information to make an initial assessment: whether the symptoms point toward
a field-serviceable issue, a case where remote diagnostic review would clarify things further
before committing to a path, or damage significant enough that shipping the unit directly to a
facility makes sense. This assessment is a starting point, not a final diagnosis — it directs the
next step rather than replacing the inspection that follows once a technician is engaged, either
on site or once equipment arrives at a facility.

Choosing the right response path

With that information in hand, Sentrimax can help determine whether the situation calls for a
field service visit, a remote diagnostic review before anyone travels, or shipping the unit
directly to a facility. The on-site centrifuge service
page explains what a field technician can and cannot resolve in place, and
the remote diagnostics page explains what can be
established from data and photographs alone before that decision is made.

Call the nearest facility directly

Calling the facility nearest your location, with the information above ready, is faster than
starting with a general inquiry form, though the contact form is also available if that suits
your process better.

If you are not the person who normally handles this machine

Unexpected failures do not always happen when the usual maintenance lead is available. If you
are handling this on someone else’s behalf, take extra care with the photograph and measurement
steps above rather than relying on memory of what the machine looks like or what it was doing —
whoever calls Sentrimax afterward will be working from what was actually recorded, not from
general familiarity with the equipment.

If the process cannot tolerate the centrifuge being down

Some plants have redundancy built in and can tolerate one unit being offline while a repair is
sorted out; others cannot, and the centrifuge being down is itself an operational emergency
regardless of the underlying mechanical cause. If that describes your situation, say so explicitly
when you call — it changes whether a rental unit to bridge the gap is worth discussing alongside
the repair itself, and it is useful for Sentrimax to know upfront rather than discovering it partway
through a diagnostic conversation.

What happens after the call

Whichever facility you reach will use the information gathered here to route the failure toward
a field visit, remote review, or facility repair. From there, any equipment sent to a facility
goes through Sentrimax’s documented inspection process, including a licensed technician’s 75-point
inspection and third-party oil analysis, before a repair quotation is prepared.

If more than one centrifuge is affected

Occasionally a single upstream or downstream process issue causes symptoms on more than one
centrifuge at once — a feed contamination event, for instance, rather than an independent
mechanical failure on each unit. If you are seeing similar symptoms across multiple machines
simultaneously, mention this explicitly when you call, since it points toward a process-level cause
worth investigating alongside, or instead of, an individual machine failure.

Why this sequence applies whether the failure turns out to be minor or major

It is tempting to assume this level of documentation is only warranted for a major failure, and
to skip it for something that looks minor. In practice, the same sequence is worth following
either way, because what looks minor at the moment of failure sometimes turns out to be a symptom
of something larger once inspected, and what looks major sometimes turns out to be a straightforward
fix. Following the same first-hour sequence regardless of how serious the failure appears removes
the guesswork of deciding in the moment how much documentation the situation deserves.

Call your nearest Sentrimax facility

Have your model information, photographs and a description of the failure ready, and call the
facility nearest you to get the process started.