Trane QFNA-IOM-1 - Manual

All Model Q and Super Q II fansare shipped on skids to minimizepossible damage in transit. Caution: NEVER LIFT A UNIT BY THEBEARING BRACKETS, MOTORBRACKETS, OR OTHERACCESSORIES. NEVERFORKLIFT THE UNIT BY THEHOUSING. Failure to handleproperly will damage the unit. Fan sizes 16-44 can be liftedusing t...

Provide a Foundation Most units will be mounted to orhung from a concrete structure. Ifmounted to a steel structure, themounting structure should bewelded. Table 2 refers to unitweights. Isolate the Fan Isolation should be used toprevent noise and vibration frombeing transmitted to the building. Arr...

Wheel Alignment Arrangements 1 and 9 Manually rotate the fan wheel to besure that it turns freely. The tipclearances are set in the factory andnormally do not require readjustment.to determine if adjustment isrequired, measure and record theclearances between wheel andhousing at six equally spacedin...

Q Fan Duct Connections To maintain catalog performancethere must be a minimum of threefan diameters of straight duct on thefan inlet and minimum of one fandiameter of straight duct on the fandischarge. A 90° elbow at thedischarge should be a minimum oftwo fan diameters from the fandischarge. An open...

Preparation for Mounting Lift the unit into position with acrane or forklift. Crane lift from theends of the support rails using aspreader bar. When using a fork,lift from under both support rails. Ceiling Mounting Hang ceiling supported units withfour 3/4-inch steel rods, oneconnected to each corne...

Inlet Vanes Caution: Due to the size of the equipment,reasonable care must be takenwhen loading, unloading,handling and installing the inletvane assembly to avoid overstressing and possible permanentdamage to the frame and relatedcomponents by excessive racing,skewing, twisting etc. 1. Bracket angle...

Start-Up Procedures The following items must bechecked before initial start-up ofthe fan: 1. Check all bolts, setscrews, and locking collars on the fan,bearings, drive, motor mount, andaccessories for tightness. SeeTables 4, 5, 10, 11 and 13. 2. Turn the fan wheel by hand to be sure it does not stri...

Establishing A Schedule Establishing a regular schedule forinspecting and performingmaintenance procedures.Acceptable schedules will varydepending upon the type ofapplication and local conditions.Consult the “Trouble Shooting”section if problems areencountered. V-Belt Drive V-Belt Drives should be i...

About Bearings The bearings for the Model QFans are carefully selected tomatch the maximum load andoperating conditions of the fan.Following the instructions in thismanual will minimize any bearingproblem. All fans shipped withbearings pre- lubricated andinstalled. The grease lines arealso filled at...

Table 14, as shown below, can beused to diagnose apparentproblems or failures in the fan. This table is intended as adiagnostic aid only. For detaileddiagnostics and repair, contact yourlocal Trane Service Company. QFNA-IOM-1 29 Troubleshooting Table 14 —Fan Troubleshooting Symptom Cause Remedy Exce...