Principles of Food Sanitation

Inside Return Ducts

1. Mark the positions of the slide panels
   over the return ports for setting back to
   their original openings.


2. Open the ports all the way and use as
   access doors for applying an alkaline
   cleaning solution to the ducts.


3. Use 90ºC water for flushing the return
   ducts. Repeat until the metal shows.


4. Reset the slide panels to the originally
   marked positions.

Inside Jet Ducts

1. Open side access panels (or drop hinged
   panel, depending on type of house).


2. Soak the inside ducts and nozzles with
   a cleaning solution.


3. Use water at 90ºC to flush these ducts
   clean. Repeat until the metal is
   exposed.


4. Close the access panel (or hinged panel).

Exhaust Stack

1. Disassemble the stack (or open access
   panels).


2. Soak the stack interior with an alkaline
   cleaning solution.


3. Flush the stack with 90ºC water or
   steam, followed by hot water. Repeat
   until the metal shows.


4. Reassemble the stack (or close the
   access panels).

Smoke Generator

FREQUENCYDepends on amount of use.

PROCEDURE

Filter

1. Soak the filter in an alkaline cleaning
   solution.


2. If mineralization has occurred, cut the
   frame apart, and clean the leaves indi-
   vidually. Re-weld the frame after
   cleaning. Avoid warping.

Baffle and Cascade Chamber

1. Mechanically or hand brush the baffles
   (especially the edges) with a wire brush.


2. Scrape the edges of the cascade water
   outlet.

Wash Chamber

1. Disassemble the duct connecting the
   smoke generator to the house.


2. Remove soot and ash from the cham-
   ber below the filter.


3. Clean the duct and chamber surface
   until the metal shows.

Spiral Freezer

FREQUENCYAfter use.

PROCEDURE

See instructions for specific equipment to

be cleaned.

PRECAUTIONS

1. To minimize friction, regularly wash
   the spiral with a foaming cleanser.


2. When the track is warm, wipe with a
   cloth dampened with a detergent solu-
   tion. If the track is cold, a dry cloth
   may be used. Tie the cloth to the under-
   side of the conveyor belt and let it be
   drawn through the spiral.


3. Defrosting the evaporator coil alone is
   insufficient for cleaning. Coils may
   appear clean, but grease, oils, salts, food
   adjuncts, and organic materials often
   remain hidden on internal surfaces.
   Therefore, it is necessary to clean and
   sanitize contaminated sites with warm
   water and a pH-balanced detergent.
   Cleansing solutions typically include an
   etching agent, a degreaser, inhibitors,
   metal protectors, stabilizers, and water. A
   mildly alkaline cleanser is often recom-
   mended for cleaning the evaporator coil.


4. If the freezer has been supplied
   with a recirculating CIP system, use a
   low-foaming detergent. Otherwise, a

Meat and Poultry Plant Sanitation 321