Emerson Copeland Scroll YH16K1E, Инструкции по применению

Страница: 13 / 40

8 AGL_HP_ST_YHK1E_E_Rev02
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 fit, eg, an M8 screw. The
mounting torque should be 13 ± 1 Nm. It is critically important that the grommet is not compressed.
If the compressors are mounted in tandem or used in parallel, then the hard mountings (bolt M8) are
recommended. The mounting torque should be 27 ± 1 Nm.
See Emerson spare parts software for reference.
Standard mounting parts for YH*K1E
– Soft mountings
Alternative mounting parts for YH*K1E
– Hard mountings
Figure 5: Mounting parts
3.3 Brazing procedure
WARNING
Air/flammable refrigerant mixture! Creation of a potentially flammable
atmosphere! Fire hazard!
Remove all refrigerant before opening the system.
When working on a refrigerant-filled system, make sure to follow the safety
and working instructions given in
Chapter 6 "Maintenance & repair" .
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 come into contact
with it.
IMPORTANT
Blockage! Compressor breakdown!
Maintain a flow of oxygen-free nitrogen
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 form, the copper oxide material can later be swept through the system and
block screens such as those protecting capillary tubes, thermal expansion
valves, and accumulator oil return orifices.
Contamination or moisture! Bearing failure! Do not remove the connection
plugs until the compressor is set into the unit. This minimises any entry of
contaminants and moisture.