Baking & Snack - June 2010 - 79

MAINTENANCE MATTERS

rated breakers, bad contacts or transformer connections
that have loosened; ovens - insulation voids or unevenness of the band temperature; steam distribution systems -
steam traps that have failed or valves that are leaking; roofs
- areas with saturated insulation can be identified.
Vibration analysis is an excellent diagnostic tool for larger
horsepower motors and the equipTIP: "Single phasing" (when one
ment they power. This can be used
of the three phases of an electrito identify problems such as outcal supply is lost) is one of the
of-balance, misalignment or bad
most damaging conditions for
bearings within a piece of rotatequipment that you can encouning equipment that is exhibiting
ter; and because of the large
vibration when in operation. Usnumber of motors and devices
ing either handheld meters on
using coils (transformers, lighting
a periodic basis or continuously
ballasts, etc.) that a bakery has,
monitoring using permanently
it is a condition that can exist for
affixed sensors, vibration analysis
a time without your knowing it.
can be used as a component of
Single phasing causes overheata preventive or predictive mainteing of electrical components to
nance program.
the point of their failure - someTransformer oil analysis can
times the first warning sign that
provide information on the consomething is wrong. Monitoring is
dition of your transformer and
the best protection.
identify problems with the oil, internal wiring and insulation; any of

-Aqr r

which can lead to a failure of the transformer.
Switchgear should be inspected, lubricated, calibrated and
tested every three to five years. Establishing a routine program
is the best way to assure the switchgear will function properly
when it is needed to protect people and your equipment.
Power monitoring is not only a useful part of a bakery's
energy conservation program but also a significant tool in
monitoring the health of the electrical supply and distribution system. Use it to monitor the incoming voltage, track
frequency of dips and spikes and as an alarm if a phase be lost.
Knowing, caring and doing require a dedicated and skilled
maintenance organization. Optimizing equipment maintenance requires a team effort by the maintenance organization, and certainly one that has to be coordinated with operations and sanitation. For those seeking to improve their
maintenance skills, some great resources are available in the
baking and snack industry - not only the capabilities of
equipment suppliers but also the American Institute of Baking and the American Society of Baking have supporting programs; and the archives of Baking & Snack provides a great
resource as well.
Maintenance optimization is attainable within any organization: It takes a commitment, requires consistency
and a realization of the importance of knowing, caring
and doing.
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Baking & Snack - June 2010

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