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9.2 PAINTING
The compressor paint resists corrosion for the exposure of 5% natural salt spray of 600 hours.
9.3 GROMMETS AND SLEEVES
Embraco supplies mounting grommets that further reduce the transmission of vibration and reaction to the
fixing points and tube of the system. Base plate of the installation must have sufficient mass and stiffness
to further reduce transmission of residual vibrations.
Components of this external suspension system are supplied partly by Embraco (rubber grommets and
sleeves) while the remaining components for their blocking - screws, washers and nuts, have to be sourced
by the customer. It is recommended to use screw M10 with tightening torque 12-14Nm.
It is very important that these components are assembled correctly in order to
guarantee the proper clearance (approximately 1.5mm) between the rubber
grommet and flat washer, fixed between nut and sleeve.
For condensing units with scroll compressors it is recommended to use rubber grommets which are delivered
together with compressors.
IMPORTANT
IMPORTANT
9.4 MOUNTING FOR RACK SYSTEMS
The usage of standard grommets is not recommended for most refrigeration scroll
rack installations. These grommets allow for excessive movement that will result
in tube breakage, unless the entire system is properly designed.
For rack applications, it is recommended to use special grommets made of steel. Grommets should be formulated
from a hardened material specifically designed for refrigeration applications. Hardened material limits compressor
motions, which minimize potential problems of excessive tubing stress. Adequate insulation is provided to prevent
vibration from being transmitted to the mounting structure. This mounting arrangement is recommended for
multiple compressor rack installations. For more information, contact
Embraco Technical Support team.
Figure
9.3 Grommets and sleeves basic dimensions
