8
AGL_AC_ST_YRH_EN_Rev01
Horizontal scroll compressors have a holding charge and are factory-filled with dry air. It is
recommended to remove the discharge connection plug first before pulling the suction connection
plug to allow the dry air pressure inside the compressor to escape.
Care must be taken when removing the plugs from the discharge and suction connections, because
oil mist might come out and coat the tube, making the brazing process on the copper-coated tubes
difficult. The copper-coated steel suction tube should be cleaned before brazing.
The plugs must be removed as late as possible before brazing so that the air humidity does not affect
the oil characteristics.
No object, eg, a swaging tool should be inserted into the suction tube as it might damage the internal
parts of the compressor.
3.1.3 Installation location, maximum tilting and rotating angles
Scroll compressors are capable of operating correctly with compressor ambient humidity between
30 and 95 %. For correct operation the compressor ambient air temperatures must be from -35 to
60 °C. The maximum allowable pressure (PS) and temperature (TS) must be respected at all times
during operation and at standstill.
Ensure the compressors are installed on a solid level base. For the installation of horizontal scroll
compressors, the recommended direction is perpendicular to the vehicle direction
– see
Figure 7
.
The maximum gradient is 7° for rotating angles and 15° for tilting angles
– see
Figure 8
.
Figure 7: Compressor installation direction
Figure 8: Rotating and tilting angles
3.2 Mounting parts
YRH(V)*KTE/KTG horizontal scroll compressors can be mounted solidly on the chassis using steel
spacers. Alternatively, rubber mounting parts of variable hardness can be used. The unit designer
should make a choice after observing the shock/vibration test results.
For the individual system review and qualification, Emerson can offer some mounting parts kit
options.
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, follow the safety and working
instructions given in
Chapter 6
.
WARNING
High temperature! Burning!
Proceed with caution when brazing system
components. Do not touch the compressor until it has cooled down. Ensure
that other components in the area of the compressor do not come into contact
with it.
CAUTION
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.
