Efficient Plant October 2017 - 44

FOOD
&
BEVERAGE
processing
taken into consideration, and that's why we ask so
many questions."
Operator error (follow procedures):
McCormick said 75% to 80% of his troubleshooting work involves centrifugal pumps.
The rest of the time he spends working on
rotary-lobe, positive-displacement, and gear
pumps, with the occasional seal-less pump.
An example of operator error with these
pumps is letting a non-self-priming pump run dry.
Seals will fail quickly without proper lubrication.
"It's the product that lubricates the seal-whether it's beer or water or milk-the liquid is what
is going to lubricate the seal base, which is the
stationary and the rotary element. If the operator
doesn't realize this, he may not flood the suction
head of that pump which could cause it to burn up
the seal.

Temperature is one of many factors that determines proper pump specification. In this application, a pump
transfers wort, at a temperature of 212 F, from a brew kettle to the fermenter in a beer-brewing operation.

Eventually, it's going to cavitate and make so
much noise they are going to want to leave the
room. I've had people call me and say the cavita-

"In the case of ceramic, it inherently does not

tion sound has scared them so much they didn't

expand. It wants to, but it can't. What I mean by 'it

McCormick said. "It can also affect the material.

want to go near it. This only happens occasionally.

wants to, it tries to, and it can't' is that it develops

Some of that can be removed during the filtration

Most operators are pretty savvy. But it's important

microscopic hairline cracks and eventually those

process. A lot of breweries have some type of

to be aware."

turn into larger cracks, and the seal will begin to

filtration at the end of the system before it goes to

leak.

packaging or bottling.

Misapplied seals (specify correctly): You
cannot only misapply an entire pump, but you

"Beyond that, there have even been some

"It's not just messy when a seal leaks,"

"Some plants don't do it like that. Some

can also misapply an entire seal, McCormick

instances where a ceramic seal totally disinte-

think that cloudy beer is the death of beer. I saw

said.

grated or blew apart-not into a million pieces,

a bumper sticker once that read, 'If God wanted

"I do a lot of work in breweries, and the

but the cracks can become so many and so big

our beer to be filtered, he wouldn't have given us

people who brew beer want it as hot as they can

that everything just falls apart. So, for high-tem-

livers."

get it," he said. "They want to brew at 210 to 212

perature applications, I get people to shy away

degrees-sometimes hotter than that. The prob-

from ceramic and instead use silicon carbide or

cially when processing sanitary products. "We

lem with temperatures like that is they generally

tungsten carbide because they are much more

have all heard about product recalls where there

use a ceramic seal, but ceramic does not handle

resilient to thermal shock." (See Sidebar, p. 42-

may be metal shavings in a product that may turn

thermal shock very well. Thermal shock is like

Mechanical Seal Faces)

out to be parts of a seal," McCormick said. "This

the screen door at your house. When it is hot it

Contamination (don't lose the batch):

This contamination can be a concern, espe-

doesn't happen often because usually when the

expands and it sticks sometimes. When it's colder,

With rubber seals and parts, contamination

seal starts leaking they shut the system down.

it opens and closes freely."

can be a problem. Unwanted elements can get

But that doesn't mean that something can't get in

into the product being processed if the seal is

there, and that is when your quality-control people

leaking.

get involved with the product.

Almost every material known to mankind
expands when exposed to heat, McCormick said.

44 |

RELIABLE PUMPING SUPPLEMENT

OCTOBER 2017



Table of Contents for the Digital Edition of Efficient Plant October 2017

Editorial
Implementations
Profitable Reliability Control On Your Horizon
Experts Provide IIoT Insights
Integrating Automation Into Shade Manufacturing
Fluid-Flow Challenges
Looking For Failure In All The Wrong Places
Closer Human/Robot Collaboration
Note These Causes Of Motor Failure
Reliable Pumping Supplement: Food & Beverage Processing
On The Floor
Uptime
IIoT
Pump 'Cavitation' Might Not Be
Never Too Late For Basic Navigation
Audit or Assess? Understand The Difference
A Perfect Pair: Barcodes and Your CMMS
Lubrication Strategies
Products
Ad Index
Showcase
Efficiency Insight
Efficient Plant October 2017 - 1
Efficient Plant October 2017 - Cover1
Efficient Plant October 2017 - Cover2
Efficient Plant October 2017 - 1
Efficient Plant October 2017 - 2
Efficient Plant October 2017 - 3
Efficient Plant October 2017 - 4
Efficient Plant October 2017 - 5
Efficient Plant October 2017 - 6
Efficient Plant October 2017 - 7
Efficient Plant October 2017 - Editorial
Efficient Plant October 2017 - 9
Efficient Plant October 2017 - Implementations
Efficient Plant October 2017 - 11
Efficient Plant October 2017 - Profitable Reliability Control On Your Horizon
Efficient Plant October 2017 - 13
Efficient Plant October 2017 - 14
Efficient Plant October 2017 - 15
Efficient Plant October 2017 - Experts Provide IIoT Insights
Efficient Plant October 2017 - Integrating Automation Into Shade Manufacturing
Efficient Plant October 2017 - 21
Efficient Plant October 2017 - 22
Efficient Plant October 2017 - 23
Efficient Plant October 2017 - 17
Efficient Plant October 2017 - 18
Efficient Plant October 2017 - 19
Efficient Plant October 2017 - Integrating Automation Into Shade Manufacturing
Efficient Plant October 2017 - 21
Efficient Plant October 2017 - 22
Efficient Plant October 2017 - 23
Efficient Plant October 2017 - 24
Efficient Plant October 2017 - Fluid-Flow Challenges
Efficient Plant October 2017 - 26
Efficient Plant October 2017 - 27
Efficient Plant October 2017 - 28
Efficient Plant October 2017 - Looking For Failure In All The Wrong Places
Efficient Plant October 2017 - 30
Efficient Plant October 2017 - 31
Efficient Plant October 2017 - 32
Efficient Plant October 2017 - 33
Efficient Plant October 2017 - Closer Human/Robot Collaboration
Efficient Plant October 2017 - 35
Efficient Plant October 2017 - Note These Causes Of Motor Failure
Efficient Plant October 2017 - 37
Efficient Plant October 2017 - 38
Efficient Plant October 2017 - Reliable Pumping Supplement: Food & Beverage Processing
Efficient Plant October 2017 - 40
Efficient Plant October 2017 - 41
Efficient Plant October 2017 - 42
Efficient Plant October 2017 - 43
Efficient Plant October 2017 - 44
Efficient Plant October 2017 - 45
Efficient Plant October 2017 - 46
Efficient Plant October 2017 - On The Floor
Efficient Plant October 2017 - 48
Efficient Plant October 2017 - Uptime
Efficient Plant October 2017 - IIoT
Efficient Plant October 2017 - Pump 'Cavitation' Might Not Be
Efficient Plant October 2017 - Never Too Late For Basic Navigation
Efficient Plant October 2017 - Audit or Assess? Understand The Difference
Efficient Plant October 2017 - A Perfect Pair: Barcodes and Your CMMS
Efficient Plant October 2017 - Lubrication Strategies
Efficient Plant October 2017 - 56
Efficient Plant October 2017 - 57
Efficient Plant October 2017 - 58
Efficient Plant October 2017 - 59
Efficient Plant October 2017 - Products
Efficient Plant October 2017 - 61
Efficient Plant October 2017 - Ad Index
Efficient Plant October 2017 - Showcase
Efficient Plant October 2017 - Efficiency Insight
Efficient Plant October 2017 - Cover3
Efficient Plant October 2017 - Cover4
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