Food, Beverage and Pharma: Hygienic Pumps, CIP and Condition Monitoring Without Wiring

Food and beverage plants are the opposite of mines: machines are close together, accessible and numerous, and the constraint is time, not distance. A dairy may have 200 centrifugal pumps on product, CIP, water, glycol and utilities; a brewery adds wort, beer and yeast pumps; a pharmaceutical plant adds WFI loops and clean-steam condensate. Failures cluster around the same three things — seals exposed to CIP temperature cycling and dry running between batches, bearings on pumps that start and stop dozens of times a day, and motors in washdown areas. A route-based vibration programme is rarely sustained because the people who would run it are keeping the line going. Wireless sensors, drive data and a seal strategy change that without adding staff.

The three recurring failures

Failure	Where	Mechanism	Prevention
Seal failure within months	Product and CIP pumps	Dry running at batch end or before CIP fills the line; dead-heading against closed valves in sequences; 85 °C caustic/acid cycling; sugar crystallisation at the faces	Drive-based dry-run and dead-head protection interlocked with the valve sequence; seal faces tolerant of transient dry running; quench or flush where product crystallises; correct elastomers (EPDM for CIP, FFKM for solvents)
Bearing failure on frequently started pumps	Transfer and CIP supply pumps	Many starts per hour, misalignment after quick repairs, pipe strain on hygienic skids	Starts-per-hour KPI, soft ramps, vibration trending to catch misalignment early, alignment after every seal change
Motor failure in washdown areas	Fillers, packaging, wet areas	Water ingress, voltage unbalance on long runs, overheating under shrouds	IP66/69K motors; electrical signature analysis at the MCC for inaccessible motors; temperature trending

Monitoring in washdown without a cabling project

Permanent wired vibration systems are unusual in F&B because every cable in a hygienic area is a cleaning problem. Wireless sensors change the economics: an i-ALERT on the motor and one on the pump bearing housing, magnet-mounted on a flat metal face, measured continuously and sent to a gateway in the plant room, with the i-ALERT AI platform learning each pump's normal pattern across its batch cycle. The plant sees trends on a phone, alarms are prioritised, and PlusSmart engineers diagnose the spectrum remotely. Confirm the sensor's ingress rating and mounting against the washdown regime — high-pressure hot water with chemicals is the harshest case — and keep sensors off product-contact surfaces and out of the CIP spray cone.

Seals that survive CIP and dry running

Read the old seal before choosing a new one. Heat-checked, burnt faces mean dry running or flashing; scored faces mean solids (sugar, fibre, scale); swollen elastomers mean chemical incompatibility; crystals around the seal mean product solidifying as it leaks. Flexaseal's answers are specific: FlexICE diamond-like-carbon faces survive dry running and poor lubrication far longer than plain SiC; EPDM or FFKM elastomers for CIP chemistry; quench (Plan 62) or a water flush where product crystallises; and for large product pumps a split cartridge seal that changes in place in an hour instead of pulling the pump off the skid. Combine with dry-run and dead-head protection in the drive and the seal-failure rate drops by an order of magnitude — the mechanism that produced "zero seal failures since 2015" at a port works the same on a CIP supply pump.

Using drive data in a batch plant

Most product and CIP pumps in a modern plant are on VFDs for flow control. The drive data — speed, torque, power — tells you when a pump is dead-heading because a valve sequence closed early, running dry because a tank emptied before the recipe step finished, or cavitating because the CIP return line is drawing air. ReliaPumpIQ turns this into protection without flow meters; PlusSmart Analytics turns the historian's version of the same data into a ranked list of pumps that spend too long outside 70–120 % of BEP, which is the list of your future seal failures.

A 90-day plan for a beverage plant

• Days 1–10: pull CMMS seal and bearing work orders for two years; rank pumps; pick the ten worst.
• Days 10–30: sensors on the ten; drive protection on the CIP supply and the worst product pump; photograph and keep every failed seal.
• Days 30–60: first diagnostics — typically misalignment and off-BEP operation; realign, adjust sequences, trial one or two Flexaseal seals on the hardest duty.
• Days 60–90: review the ranking; extend sensors to the next twenty pumps; write the seal standard for the plant by duty.

PlusSmart Vietnam supports plants across Vietnam, Thailand and Indonesia with the site survey, the sensor pilot and the seal analysis; quotations are confirmed by PlusSmart Technology.

Quick answers

Are the sensors suitable for hygienic areas?

They are mounted on motors and bearing housings — non-product-contact surfaces — outside the CIP spray cone. Confirm the ingress rating against your washdown regime; PlusSmart advises on placement during the survey.

Our pumps are small (2–15 kW). Is monitoring worth it?

Rank first. Monitoring every small pump is not economical, but the ten that stop a filler or delay a batch usually are; a seal change with lost production on a filling line costs far more than a sensor.

Can dry-run protection be added to pumps on the plant PLC?

Yes. ReliaPumpIQ works from the drive's data and integrates with the existing PLC sequence so protection and recipe steps stay consistent; no flow meters are required.