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In order to avoid refrigerant leaks or other damage the compressors should not be lifted by the
service valves or other accessories.
3.1.4 Installation location
Ensure the compressors are installed on a solid level base.
3.1.5 Mounting parts
To minimize vibration and start/stop impulses flexible mounting should be used. For this purpose
one set of spring mounting parts for each of the Stream models is delivered with each 4M*D and
6M*D compressor.
Due to differences in weight (cylinder/motor side) different springs have to be used on both
sides. Springs have different colours for easier identification: violet on motor side and orange on
cylinder side.
Transport clamp
Operational position
Transport position
Figure 10: Position of vibration dampers during transport and operation
When Stream Digital compressors are mounted in racks, rubber mounting parts should be used.
A compressor may be rigidly mounted, ie, without springs. In this case more shock and vibration
will be transmitted to the frame.
Unevenness in the mounting surface will affect the rack and/or the compressor bottom plate/feet.
Excessive unevenness can result in too high mechanical stress to the system and could damage
the compressor or rack. Therefore, the flatness of the mounting location is essential. In addition,
both vibration/shock and mechanical stress to compressor can be avoided by using rubber
mounting parts.
If the installation requires a very high level of vibration absorption, additional vibration absorbers
– available on the market – can be fitted between the rails and the foundation.
3.2
Pressure safety controls
3.2.1 High-pressure control
A high-pressure control with a maximum cut-out setting of 28.8 bar(g) is required.
The high-pressure cut-out should have a manual reset feature for the highest level of system
protection.
3.2.2 Low-pressure control
The normal minimum cut-out setting is 0.1 bar(g) for R404A.
The low-pressure cut-out should have a manual reset feature for the highest level of system
protection.
3.2.3 Maximum allowable pressures
The maximum allowable pressures according to EN 12693 shown on the compressor nameplate
are obligatory and must not be exceeded.
C6.3.2/0416-0716/E
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