Installation and service
Piping design
Wiring and rotation
direction
Failure analysis
For each tandem configuration specific outline
drawings are available as indicated on the
following pages. These drawings must always be
followed.
No changes shall be made to the indicated
tubing diameter and fitting types. As for passive
systems, the oil equalization line shall be made of
copper tube and assembled in such a way so that
it does not extend above the connection height
and must be horizontal so as not to trap oil.
Please contact Danfoss Sales for specific
drawings.
All compressors in a manifolding unit must be
electrically wired individually.
Compressors should run with the correct rotation
direction. This can be achieved by having the
correct phase sequence on each compressor
motor terminal (L1-T1, L2-T2, L3-T3).
When one compressor in a parallel system fails,
the chance of foreign particles entering other
compressors is greatly increased. Therefore a
failure analysis must be done quickly to ensure
further proper running conditions for the overall
installation (i.e.: oil analysis).
50
FRCC.PC.035.A4.02
Application Guidelines
Manifold compressors
