Carrier 50TJ016-028 Installation, Start-up And Service Instructions Manual

Also see for 50TJ016: Installation, Start-Up and Service Instructions Installation instructions

Contents

26Belt Tension Adjustment — To adjust belt tension:1. Loosen fan motor bolts.2. Adjust belt tension:a. Size 016 Units: Move motor mounting plate up ordown for proper belt tension (1/2 in. deflection withone finger).b. Size 020-028 Units: Turn motor jacking bolt to movemotor mounting plate up or down for proper belt ten-sion (3/8 in. deflection at midspan with one finger [9lb force]).3. Tighten nuts.4. Adjust bolts and nut on mounting plate to secure motor infixed position.Condenser-Fan Adjustment50TJ016,020 UNITS (Fig. 34)1. Shut off unit power supply.2. Remove access panel(s) closest to the fan to be adjusted.3. Loosen fan hub setscrews.4. Adjust fan height on shaft using a straightedge placedacross the fan orifice.5. Tighten setscrews and replace panel(s).6. Turn on unit power.50TJ024,028 UNITS (Fig. 35)1. Shut off unit power supply.2. Remove fan top-grille assembly and loosen fan hubscrews.3. Adjust fan height on unit, using a straightedge placedacross the fan orifice.4. Tighten setscrews and replace rubber hubcap to preventhub from rusting to motor shaft.5. Fill hub recess with permagum if rubber hubcap ismissing.Fig. 32 — 50TJ016 Evaporator-FanMotor SectionNOTE: A 3 1 /2 -in. bolt and threaded plate are included in theinstaller’s packet. They should be added to the motor support chan-nel below the motor mounting plate to aid in raising the motor. Theplate part number is 50DP503842. The adjustment bolt is 3 /8 -16 x1 3 /4 in.-LG.Fig. 33 — 50TJ020-028 Evaporator-FanMotor SectionNOTE: Dimensions are in inches.Fig. 35 — Condenser-Fan Adjustment,50TJ024,028NOTE: Dimensions are in inches).Fig. 34 — Condenser-Fan Adjustment,50TJ016,020