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

4.8  DESIGN REQUIREMENTS FOR DIVIDERS, ROUNDERS AND BUN MACHINES

4.8.1 Definitions

4.8.1.1 Dividing: That operation and process whereby dough is either formed, extruded or cut into separate pieces of baking size.

4.8.1.2 Rounding: Rounding is that operation and process whereby divided dough pieces are formed into balls.

4.8.1.3 Bun Machine: A bun machine consists essentially of a dividing and rounding mechanism with or without a dry proofing attachment. In connection with a bun machine there may also be a moulding device. The dividing and the rounding mechanism shall conform to the pertinent provisions of these standards for dividers and rounders; the moulder mechanism shall meet the pertinent provisions of Section 4.3 and Section 4.9.

4.8.2 Specific Design Requirements

4.8.2.1 Part numbers, where required as on pistons, shall not be in the product zone.

4.8.2.2 The rounder cone shall be exempt from the definition "smooth" insofar as grooves may be cut in the rounder cone surface. These grooves shall have a rounded radius at the bottom of at least 1/16 inch (1.5mm); or if a groove is less than 1/8 inch (3mm) in width, it shall have a semi-circular contour. The surface of these grooves shall be as smooth as manufacturing process shall permit, and shall be easily cleaned.

4.8.2.3 All surfaces, except the contact surface between the bar, race or spiral and the rounding surface, shall be accessible to both sight and reach.

4.8.2.4 Permanently joined metal surfaces shall be butted and welded, and finished flush and equal to the surrounding area. Where two metals are bolted together so that the joint may be separated for maintenance, the surfaces shall be accurately fabricated before assembly so that a tight fit is obtained and the joints sealed.

4.8.2.5 The system for lubricating dough-contact surfaces, as distinct from the means of mechanical lubrication, shall have a reservoir accessible or removable for cleaning. Distribution lines, valves and pumps shall be accessible for cleaning or so designed to permit cleaning in place (CIP).

4.8.2.6 Dusting boxes shall be provided with attached covers, and the dusting mechanism shall be accessible, or the parts removable. Other types of dusting mechanisms shall be constructed so that they are accessible for cleaning.

4.8.2.7 Dust shields and canopies, if used on rounders, shall be considered a part of the product zone, and shall be accessible for cleaning or removable.

4.8.2.8 Lubricated transmissions shall be designed to prevent leakage and placed so that lubricant cannot leak, drip or be forced into the product zone.

4.8.2.9 Openings of sufficient size and proper arrangement shall be provided to permit access to surfaces for inspection or cleaning as indicated in the equipment cleaning procedures. Covers or doors for these access openings shall be removable or hinged.

4.8.2.10 Base or base supports shall be so designed that they can be sealed to the floor, or there shall be 6 inches (150mm) minimum clearance provided between the lowest horizontal surface and the floor, except for the vertical support members or legs.

4.8.2.11 Housings or guards around drive parts such as chains and sprockets shall be removable, or be fitted with removable covers or panels, to provide access for cleaning. This does not apply to permanently sealed guards or housing enclosing parts running in lubricant.

4.8.2.12 All non-product zone surfaces of castings shall be free of coarse impressions or holes. The base frame and supporting member shall be designed to be cleaned, and shall be free of pockets, crevices and inaccessible spaces.