Table of Contents
Advertisement
NOTE: Keep the compressor upright during installation and removal; otherwise oil could spill out
of the suction tube.
3.1.3 Installation location
Ensure the compressors are installed on a solid level base.
3.1.4 Mounting parts
Four vibration absorber grommets are supplied with each compressor. they 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. A clearance space of approximately 2 mm between the bottom of the washer and
the top of the grommet spacer is recommended.
NOTE: Use the advised torque below to prevent from crushing the sleeve.
Bolt
M 8
13 ± 1 Nm.
Mounting torque
Table 2
The metal sleeve inside helps to hold the grommet in place.
3.2
Brazing procedure
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 holes.
Contamination or moisture! Bearing failure! Do not remove the plugs until
the compressor is set into the unit. This minimises any entry of contaminants
and moisture, especially if the compressor is charged with POE oil that is
very hygroscopic.
3
2
1
Z.8.14.00
Figure 5: Suction tube brazing
Fig. 5 shows the proper procedure for brazing the suction and discharge lines to a scroll
compressor.
C6.2.7/0302-1007/E
Figure 4
TM
Copeland Scroll
compressors have copper-plated
steel suction- and discharge tubes. These tubes are
far more robust and less prone to leaks than copper
tubes. Due to the different thermal properties of steel
and copper, brazing procedures may have to be
changed from those commonly used.
5
Advertisement
Table of Contents
