HVAC Variable Frequency Drives
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title: HVAC Variable Frequency Drives
−category: Mechanical
+category: Mechanical / Controls & Testing
toc_depth: 3
description: >
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Drive cooling fans are the highest-wear consumable component in a VFD and are the most common cause of overtemperature shutdowns after filter clogging. Maintaining spare cooling fans on site enables same-day repair of a fan failure rather than waiting for parts delivery. The manufacturer shall provide fan replacement instructions and the estimated fan service life based on the specified ambient temperature and duty cycle.