Emotron VSB Instruction Manual Chapter 8 Maintenance
8.3 Replacement of Vulnerable Parts
Vulnerable parts of drive include cooling fan, electrolytic capacitor, relay or contactor etc. The
service lives of these parts are subject to environment and working conditions. To maintain a
favorable operating environment is conducive to improving the service life of parts and
components; routine inspection and maintenance also contributes to effective improvement of
parts' service life. To prolong the service life of entire drive, the cooling fan, electrolytic
capacitor, relay or contactor and other vulnerable parts should be subjected to routine
inspection according to the table below. Please replace the abnormal parts (if any) in time.
Vulnerable
Service life Cause of damage Criteria
Fan
30,000 -
40,000h
Wear of bearing and
aging of blade
Check if fan blades have
cracks
Check if there is abnormal
vibration and noise on working
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