Ventilation and Spacing
Technical Guide 2-7
Vertical Clearance —
Provision must be made to allow adequate space
above the scanner bonnet for removal and replacement of an L-shaped
platter. Optimal clearance permits the platter to be grasped at its top verti-
cal edge and lifted for removal without obstruction (such as a fixed key-
board mount or any type of enclosure). Should such an enclosure be
unavoidable, an alternate method of platter removal using two coins may
be employed, however a minimum vertical clearance of 1.5” (3.8 cm)
MUST be provided (reference Figure 2-4). Another consideration is that
the scan zone must be kept free of obstructions such as enclosures, key-
board mounts, etc.
Figure 2-4. Vertical Clearance
Ventilation and Spacing
The scanner/scale’s perimeter housing has been designed to provide ade-
quate space for convective cooling and unrestricted movement of the
weighing apparatus. Figure 2-5 shows the debris chutes and ventilation
slots. The checkstand design must allow:
• The ambient air temperature inside the checkstand adjacent to the
scanner must not exceed 104°F (40°C).
DO NOT
Obstruct
Scan Zone
DO NOT
Obstruct
L-Platter
Removal
Allow a minimum
clearance of
1.5" (3.8cm)
(Enclosure)
(Keyboard Mount)
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