Ningbo Dahua Electric Appliance-NINGBO DAHUA ELECTRIC APPLIANCE CO.,LTD
NINGBO DAHUA ELECTRIC APPLIANCE CO.,LTD
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Life test

PURPOSE
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To ensure that all motors and cleaners tested meet and continue to meet the reliability targets specified.

EQUIPMENT
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         For fan units according to TRL-3758.
         For cleaner only according to DUL-3530.

METHOD
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         Standard cleaner motors are tested in dummy bodies mounted on the test benches.  The cleaners are fitted with 0.5" orifices to obtain close to mean power.
         The cleaners are run intermittently (on for 14.5 min, off for 0.5 min) at 1.06 times rated voltage. The dust bags may be changed every 100 h;
         The temperature in the room is set to 25 degrees C (+/- 3 degrees C).
         It is recommended to have a separate ventilation outlet for the outlet air from the cleaner.
         Check the cleaners once a day. The test may be run overnight and takes approximately 25 days.

REQUIREMENTS
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         For an acceptable pass level motors as well should run for 600 hours as complete cleaners should run for 500 hours. (commercial and industrial cleaners 1000 hours).
         If testing a complete cleaner, signs of plastics being effected by high motor temperature must not occur.