5.3 LIMITATIONS OF PART-LOAD OPERATION
If a RC46 or RC86 is to be operated continuously
at the minimum part-load step of 25%, the
manufacturer should be consulted first to check
whether this is allowed under the expected design
conditions.
In case of a RC6-compressor operating
continuously at part-load, the general field of
application is reduced in the sense that for each
step of capacity reduction the limit line for t
e
=
155
o
C moves to the right as shown in fig. 5.4, by
four V
s
-indications in percentage.
In case of a RC6W-compressor, however, there are
no part-load restrictions. In other words, the
general field of application as shown in fig. 5.5,
also remains valid for part-load operation down to
and including the standard minimum capacity
control step of Vs = 25%.
Fig. 5.4 Field of application for compressor type RC6 with NH3
Fig. 5.5 Field of application for compressor type RC6W with NH3
Refrigeration Division
Grasso
5. LIMITS OF OPERATION AND
FIELDS OF APPLICATIONS
v001.99.01.en Installation and Maintenance Manual RC(U)6 page C3.3
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