Retrotec Commercial 441 and 451 DucTester Manual de usuario Pagina 32

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©Retrotec Inc. 2015
8. Avoid common mistakes
The following mistakes are commonly made when performing a duct test, and can significantly affect
the results.
Wrong Range Configuration and or wrong Device selected on gauge
Water in tube, pinched tube
No green reference tube attached while depressurizing ducts
Not covering all intentional duct openings
Tape sealing registers being blown off, usually happens in pressurization
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