Carrier 39LA Installation, Start-up And Service Instructions Manual

Also see for 39L Series: Installation, Operation, and Start-Up Instructions

Contents

Carrier 39LA Installation, Start-up And Service Instructions Manual Manual pdf 29 page image

29START-UPCheck List — Make a walkway inside unit components toprotect insulation. Remove all construction debris from unitinterior. Remove walkway before starting unit.FILTERS — Install unit filters in all filter sections.FANS1. Check lubrication of fan, motor bearings, and linkages.a. Note that bearings are shipped completely full ofgrease for corrosion protection and may run warmtemporarily on start-up until excess grease hasdischarged.b. Hand-operate all linkages, such as damper andguide vanes, to check for freedom of movement.2. Check tightness of bearing setscrews or locking collars(Fig. 35). Also, check tightness of setscrews on fanwheels and sheaves.3. Check tightness of fan shaft bearing mounting.4. Recheck sheave alignment and belt tension. (Refer toFig. 14 and 15.)5. Hand turn fan to make certain fan wheel does not rub inhousing.Fig. 34 — Fan Discharge Positions, Fans with IGVsLEGENDTHF — Top Horizontal FrontTHR — Top Horizontal RearUBF — Upblast FrontUBR — Upblast RearSQUEEZE-TYPE LOCKING COLLARBEARING SETSCREW TORQUE (in.-lb)BEARING HOLDDOWN BOLT TORGQUE (ft-lb)Fig. 35 — Fan Shaft Bearing Details39L UNIT SIZE TORQUE03,06,08,10,12 7015,18,21,25 90BOLT SIZE TORQUE3 / 8 -16 301 / 2 -13 635 / 8 -11 100