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© Danfoss | Climate Solutions | 2023.07
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Compressor assembly
4.9 Operating mode of the lockable service connections
Opening the shut-off valve:
a) Spindle 1: turn to the left (counter-clockwise) as far as it will go.
—> Shut-off valve fully opened /
service connection 2 closed
Fig. 11
Fig. 12
1
1
3
3
Pipe connection
Pipe connection
Opening the service connection (2):
b) Spindle 1: Turn ½ - 1 rotation to the right.
—> Service connection 2 opened / shut-off valve opened.
Connection 3 is provided for safety devices and is not lockable.
3
3
2
2
After activating the spindle, generally fit the spindle protection cap again and tighten with 14-16 Nm.
This serves as a second sealing feature during operation.
For systems with long pipes and higher degree of contamination, a filter on the suction-side is
recommended. The filter has to be be renewed depending on the degree of contamination (reduced
pressure loss).
4.10 Suction pipe filter
