8 -- --
9 Speed regulated Vi = variable
A Oil cooling
Code letter Oil cooling
A Water-cooled oil cooler
B Refrigerant cooled oil cooler
C Refrigerant injection
D Water and refrigerant cooled oil cooler
E Water or refrigerant cooled oil cooler and refrigerant injection
F Without oil cooler
Examples of designation
XA B - 6 A Singe stage screw compressor package Grasso SP1 with screw compressor 3250 m³/h
(XA), refrigerant NH
3
and vertically installed oil separator (B), booster with fixed internal vol-
ume ratio (6)with oil fine separation and water-cooled oil cooler (A)
T A - 2 A Singe stage screw compressor package Grasso SP1 or SSP1 with screw compressor 1460
m³/h (T), refrigerant NH
3
and horizontally installed oil separator (A), fixed internal volume
ratio Vi = 3.6 (2)
with oil fine separation and water-cooled oil cooler (A)
N A - 3 B Screw compressor package Grasso M with screw compressor 873 m³/h (N), refrigerant NH
3
and horizontally installed oil separator (A), fixed internal volume ratio Vi = 4.8 (3)with oil fine
separation and refrigerant-cooled oil cooler (A)
LD - 2 A Screw compressor package Grasso SPduo with 2 of screw compressors 544 m³/h (L),
refrigerant NH
3
and DuoPack version or multiple configuration (D), fixed internal volume
ratio Vi = 3.6 (2) with oil fine separation and water-cooled oil cooler (A)
W E - 6 A (L) Two-stage screw compressor package with LP screw compressor 1940 m³/h (W), refriger-
ant NH
3
two-stage package (E), LP-compressor as booster (6), with oil fine separation and
water-cooled oil cooler (A), HP-compressor 544 m³/h (L)
7.3 Technical specifications
Packages / chillers are designed and manufactured
for special fields of application. For technical specifi-
cations see the following.
–
order specification,
–
list of parameters,
–
general assembly drawing,
–
P+I diagram.
Description of Design and Function Operating Manual | GEA Grasso M-Series
Screw Compressor Packages
32 GEA Refrigeration Germany GmbH | P_261511_1 | Generated 01.04.2015
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