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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
05/03/2021

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

13 steps
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

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