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ANSI Z50.1. Safety Standards
17. Slicing Machines
17.1 Slicing and Wafer Cutters
17.1.1 All bread slicing machines shall be provided with a mechanical device to
push the last loaf through the slicer knives without contacting the moving
knives.
17.1.2 The cover over the knife frames of reciprocating blade slicers shall be
provided with a safety interlock device so that the machine cannot operate
unless the cover is in place.
17.1.3 On slicer with endless band knives, the drive motor shall be equipped
with automatic braking which will quickly stop the motor. Each door, panel, or
other point of access to the cutting blades shall be provided with a safety
interlock so that the drive motor will stop if any such access points are opened,
and so that the motor cannot be restarted while these panels or doors remain
open. Restarting shall require manual activation of the start control.
17.1.4 On slicers with endless band knives, a safety device shall be provided
that is tripped by a moving broken knife, where thereby causes the drive motor
to make a fast braked stop.
17.1.5 Bread slicers with endless band blades shall not be sharpened with a
hand-held hone.
17.1.6 Slicers that are mounted over conveyors and hinged to allow the operator
to raise the unit shall be provided with an electrical safety interlock to stop the
blades from operating when in the raised position.
17.2 Slicing, Wrapping and Bagging Machine Connections
17.2.1 The shear point at the opening for the slicer flight at the discharge end of
the flight chain shall be protected by a hinged plate or guard, or otherwise
arranged to keep workers from getting into the hazard areas.
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17.2.2 Since slicing and wrapping or bagging machines are usually used as a
single unit, but may be purchased from separate manufacturers, the purchaser
shall ensure that the machines are so installed and connected that the chains,
sprockets, belts, and moving parts are guarded. The purchaser shall also be
responsible for safe interconnections of starting and stopping devices. Section 4
of this standard applies.
17.2.3 Mechanical clutch levers or electrical push-button motor controls for
starting and stopping both slicing machine conveyors and wrapping or bagging
machines shall be so arranged that an operator in one location only can start and
stop both machines but can stop the machines at more than one station.
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