A-A-50043A
TABLE II. Classification of defects
|
Examine |
Defect |
|
Workmanship |
Dirty Any rough or sharp edges, scratches, burrs, slivers, breaks, sharp corners, deformities, dents, rough die or grind marks |
|
Design and construction. |
Not designed as specified Maintenance access not provided |
|
ON-OFF switch |
Missing. Not accessible and not visible to operator Not located to prevent direct contact with bulb |
|
Bulbs |
Missing, not infra–red Not 250–watts |
|
Power supply cord and plug |
Not three–wire grounding type cord Not three–prong grounding plug Not 6–foot long |
|
Markings |
Missing, not permanent, not legible, marking not as specified. |
3.4 Testing. One representative production unit shall be functional tested. Connect the food warmer to the power source. Place “ON-OFF” switch in the “ON” position. Check to assure infra-red bulbs or heating elements are operating, and a serving temperature of 140°F in an ambient temperature of 720F is maintained. Failure of the unit to maintain the specified temperature shall constitute rejection of the lot.
3.5 Compliance. Prior to commencing production, the supplier shall submit satisfactory evidence to the contracting officer or his authorized representative that the food warmers he proposes to supply under this specification meet the applicable requirements of UL No. 197 and NSF No. 4 as follows:
3.5.1 UL. Acceptable evidence of meeting the requirements of UL shall be the UL label, a UL listing mark, or a certified test report from a recognized independent testing laboratory, acceptable to the Government, indicating that the food warmers have been tested and conform to UL No. 197.
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