Cleaning Unit Exterior
Unit exterior panels should be wiped down using a damp soft cloth or sponge with a mixture of warm water and a mild detergent.
Factory-supplied drives are pre-aligned and tensioned; however, it is recommended that the belt tension and alignment be checked before starting the unit. Always check the drive alignment after adjusting belt tension.
To install sheaves on the fan or motor shaft:
NOTE: There should be a 1/8-in. to 1/4-in. gap between the mating part hub and the bushing flange. If the gap is closed, the bushing is probably the wrong size.
Evaporator Fan Performance Adjustment
To change fan speeds from factory settings:
To align fan and motor pulleys:
BELT TENSION ADJUSTMENT
Using a gage, apply 4 lb of force to the center of the belt and adjust the tension until a deflection of 1/64-in. is achieved for every inch of shaft center distance. See Fig. 29.
Ideal belt tension is the lowest value under which belt slip will not occur at peak load conditions.
All units are factory charged with oil. It is not necessary to add oil unless compressor(s) is removed from the unit.
Source: Carrier (www.shareddocs.com)