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Omnizone™ Constant Volume Water-Cooled Cooling Unit 50BVZ: General Maintenance

This procedure is for the general and inspection maintenance of your equipment. It focuses on cleaning the unit exterior and its alignment.
MaintainX
10/24/2021

Omnizone™ Constant Volume Water-Cooled Cooling Unit 50BVZ: General Maintenance

This procedure is for the general and inspection maintenance of your equipment. It focuses on cleaning the unit exterior and its alignment.

    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.

    Fan Sheaves

    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:

    ALIGNMENT

    Shaft Alignment

    Sheave Alignment

    • Screenshot2021-01-15at10.10.34AM.png

    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.

    Compressor Oil

    All units are factory charged with oil. It is not necessary to add oil unless compressor(s) is removed from the unit.

    • Screenshot2021-01-15at10.16.45AM.png
Source: Carrier (www.shareddocs.com)

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