Table14,asshownbelow,canbe
usedtodiagnoseapparent
problemsorfailuresinthefan.
Thistableisintendedasa
diagnosticaidonly.Fordetailed
diagnosticsandrepair,contactyour
localTraneServiceCompany.
QFNA-IOM-1 29
Troubleshooting
Table14 —FanTroubleshooting
Excessivevibrationornoise
(SeeTableinGeneral
Maintenancesection)
Bearingisexcessivelyhot
Note:Bearingsonhigh-speed
fanscanrun75°above
ambient
Loosefanbelt
Shortbeltlife
HPtoohigh
LowCFM