Carrier 48LJE004 Installation, Start-Up And Service Instructions Manual page 14

Fig. 24 - Outdoor-Air Thermostat/
Enthalpy Control Installation
Fig. 25 - Wiring Connections for
Outdoor-Air Thermostat
Fig. 26 - Belt Drive Motor Mounting
To align fan and motor pulleys:
1. Loosen fan pulley setscrews.
2. Slide fan pulley along fan shaft.
3. Make angular alignment by loosening motor from
mounting.
To adjust belt tension:
1. Loosen fan motor mounting nuts.
2. Slide motor mounting plate away from fan scroll for proper
belt tension (Vi-in. deflection with one finger).
3. Tighten motor mounting nuts.
4. Adjust bolt and tighten nut to secure motor in fixed
position.
14