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

PURPOSE
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To evaluate cleaner bodies under thermal and mechanical stress caused by continually closing and opening the suction inlet.
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EQUIPMENT
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A rig consisting of a valve capable of sealing the air inlet at intervals governed by a timer.
A counter to monitor the number of cycles.
A vacuum meter. According to DUL-3336. DUL-3336                                              
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METHOD
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The sample cleaner is set up in the test bay and the panting unit fitted to the inlet of the test cleaner.
The rig is set to cycle at 6 seconds closed orifice and 14 seconds open.
The test is started by connecting up to a nominal mains voltage and switched on。
The suction (vacuum) is noted at the start and during the test on a regular basis.
One cycle takes 20 sec.
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REQUIREMENTS
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Cleaner on test should last for at least 20000 cycles without failure.
Check the cleaner twice a day to see that it is OK (without disassembling). The  suction ( vacuum) loss should not be more than 10 % of the original value