4  SPECIFIC PRINCIPLES TO COVER EXCEPTIONS AND ADDITIONS TO THE DESIGN, CONSTRUCTION AND CLEANING OF ALL BAKERY EQUIPMENT, AS DEFINED IN SECTION 3.

4.32  DESIGN REQUIREMENTS FOR COOLERS FOR BAKERY FOODS

4.32.1 Definitions

4.32.1.1 Cooler: A rack, tray or conveying device used to reduce the temperature of baked, fried or similarly prepared foods.

4.32.1.2 Product zone, as defined in Section 2.11, includes the surfaces of such adjuncts as side guides and fittings, with which unwrapped bakery foods may have contact during the course of cooling. Any support contacting the product carrying surface shall be considered as product zone.

4.32.2 Specific Design Requirements for Coolers

4.32.2.1 The equipment and components shall be readily accessible and easily cleanable. Product carrying surfaces shall be readily accessible, or space shall be provided to accommodate installation of facilities for in-place cleaning.

4.32.2.2 Wires and/or rods, when joined permanently to produce a rigid grid-type carrying surface, shall be butt welded, and the length of the weld shall not be smaller than the diameter of the smaller wire or rod. The spacing between parallel wires or rods shall not be less than 1/4 inch by 2 inches (6mm by 50mm).

4.32.2.3 Drip or catch pans shall be readily accessible or readily removable.

4.32.2.4 Drip or catch pans shall be provided between overhead trolleys and the product zone, on suspended monorail-type coolers.

4.32.2.5 Drip or catch pans shall be provided under all cleaning devices, which contact the product zone surface.

4.32.2.6 All structural members shall provide a minimum amount of flat horizontal surface. All surfaces and areas where crumbs, carbonized particles, flour dust or foreign material accumulate shall be readily accessible and easily cleanable.

4.32.2.7 Rollers, pulleys, sprockets and trolley wheels shall be free of end recesses, and shall be closed if hollow.

4.32.2.8 The joints between rollers, pulleys and sprockets, and the shafts, on which they are mounted and tightly fitted, do not have to meet the requirements of Section 3.1.11.

4.32.2.9 Housings and hoods shall be accessible or removable.

4.32.2.10 Drive mechanisms should be mounted below or at the side of the product zone and off the floor. Drive mechanisms above the product shall have drip pans, which are readily removable or readily accessible.

4.32.2.11 Wire mesh-type belting shall be removable or provided with facilities for in-place cleaning.

4.32.2.12 Conveying surfaces shall be supported by the minimum amount of carrying surface or bed as required. Rods, slats, rollers or like supports shall be used where practical.

4.32.2.13 The spaces between slats on slat conveyor shall be wide enough to facilitate cleaning, and shall be not less than one-half the depth of the slats, with a minimum of ½ inch (12mm) between slats.

4.32.2.14 Fabric belts shall comply with Section 3.1.15, and raw edges and ends shall be sealed. Belt lacing should be free of pockets.

4.32.2.15 Any cleaning device that contacts the product zone surface shall be readily removable.

4.32.3 Specific Design Requirements for Cooler Enclosures

4.32.3.1 All internal and external framework, bumpers, guides, tracks or supports resting on the floors or attached to ceiling or walls shall be sealed at the point of contact. Hollow supports and braces shall be sealed.

4.32.4 Specific Design Requirements for Cooler Air Conditioning Equipment

4.32.4.1 Materials shall be non-absorbent, non-toxic, odorless, and shall be either corrosion-resistant or have a protective coating.

4.32.4.2 The interior surfaces of the air conditioning unit housing and the exterior surfaces of the air conditioning unit therein shall be accessible.

4.32.4.3 Fans shall be accessible.

4.32.4.4 Complete drainage shall be provided for water reservoirs and points where water may collect.

4.32.4.5 Water used for air scrubbing and evaporative cooling, and moisture introduced into conditioned space for humidification, shall be potable.

4.32.4.6 Ducts shall be provided with openings or removable sections so located and installed that they will permit visual inspection and cleaning by vacuum or other suitable methods.

4.32.4.7 Joints occurring where walls, ceiling or floor surfaces form one or more sides of a duct shall be sealed, or the duct shall be removable.

4.32.4.8 Ducts shall be constructed and assembled so that the joints are sealed or the sections are removable.

4.32.4.9 Ducts, wherein water may accumulate, shall be pitched to provide complete drainage, and arranged so that water shall not leak or drip on the product.

4.32.4.10 Rectangular ducts which are not removable, but adjacent to a fixed surface, shall either be sealed thereto, or the duct shall be spaced away from the fixed surfaces a distance equal to one-fifth (1/5) of the shortest dimension of the duct parallel to the adjacent surface.

4.32.4.11 Round ducts shall be spaced from fixed surfaces so that duct and adjacent surfaces shall be readily accessible for cleaning.

4.32.4.12 Corrosion-resistant screening with openings not to exceed ¼ inch (6mm) shall be used to protect outside air openings of ducts. Outside lights shall not be located within 15 inches (380mm) of intake duct openings.