AGL_HP_VS_YHV_RG_RT_EN_Rev00 13
3.2 Mounting parts
The compressors are designed to be mounted on vibration absorber grommets. The grommets
dampen the start-up surge of the compressor and minimise sound and vibration transmission to the
compressor base during operation. The metal sleeve inside is a guide designed to hold the grommet
in place. It is not designed as a load-bearing member, and application of excessive torque to the
bolts can crush the sleeve. Its inner diameter is approximately 8.5 mm to suit , eg, an M8 screw. The
mounting torque should be 13 ± 1 Nm. It is critically important that the grommet is not compressed.
To provide good vibration damping f rom low to high speed the grommets are soft. To avoid any
compression the grommets and sleeves are designed so that there can be a gap of up to 2 mm once
the compressor is mounted.
Mounting parts for YHV*RG/RT compressors
Soft mountings
Mounting parts for YHV*RG/RT compressors Hard mountings
Figure 13: Rubber mounting parts and sleeves
NOTE: Depending on the system design, a transport fixation may be needed to hold the
compressor and the piping in a fixed position during transport of the refrigerant circuit
assembly, especially for designs with the soft mounting parts. Alternatively harder grommets
can be used instead of soft grommets, to avoid the usage of a transport fixation. In this case,
the sound and vibration transmission behaviour of the compressor with hard grommets may
differ from the sound and vibration behaviour with soft grommets.
NOTE: For more information, please refer to Technical Information C7.11.2 "Scroll Mounting
Parts". Also see Emerson spare parts and accessories software available at
www.climate.emerson.com/en-gb/tools-resources for reference.
3.3 Brazing procedure
Air/flammable refrigerant mixture! Creation of a potentially flammable
atmosphere! Fire hazard!
Remove all refrigerant before opening the system.
When working on a ref rigerant-filled system, make sure to
and working instructions given in Chapter 6 "Maintenance & repair
Reference source not found.
WARNING
High temperature! Burning!
Proceed with caution when brazing system
components.
Do not touch the compressor until it has cooled down. Ensure
that other materials in the area of the compressor do not
CAUTION
Blockage! Compressor breakdown! Maintain a flow of oxygen-
through the system at very low
pressure during brazing. Nitrogen displaces
the air and prevents the formation of copper oxides in the system. If allowed
to f orm, the copper oxide material can later be swept through
block screens such as those protecting capillary tubes, thermal expansion
valves, and accumulator oil return orifices.
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