GEA Bock FK20 - Manual (Page 9)

9 09740-09.2013-DGbFIT
r
D
GB
F
I
TR
3| Areas of application
Design for other ranges on request
Max. permissible
operating pressure (g) high-
pressure side (HP): 28 bar
Max. permissible
operating pressure (g) high-
pressure side (HP): 28 bar
Unrestricted
application range
Unrestricted
application range
Reduced suction gas
temperature
Reduced suction gas
temperature
Evaporation temperature (°C)
Evaporation temperature (°C)
Condensing temperature (°C)
Condensing temperaturee (°C)
Suction gas superheat (K)
Suction gas superheat (K)
Suction gas temperature (°C)
Suction gas temperature (°C)
Fig. 4
Fig. 5
20
30
50
70
80
-20 -10 10 0 20 30 t (°C)
o
t (°C)
c
82
-30
40
60
90
t + 25 °C
oh
< ? t
oh
20 K
R134a
20
30
50
-20 -10 10 0 20 t (°C)
o
t (°C)
c
61
-30
40
60
-25
< ? t
oh
20 K
t + 25 °C
oh
R407C
3.4.1 Limits of application R134a (N and K versions)
3.4 N and K versions
Models available:
• FKX20/120 N • FKX20/145 N • FKX20/170 N
• FKX20/120 K • FKX20/145 K • FKX20/170 K
Permissible rotation speeds:
N Design: 500 – 3000 ¹/
rpm
(max rotation speed 3500 rpm)
K Design: 500 – 3500 ¹/
rpm
3.4.2 Limits of application R407C (N and K versions)
Permissible rotation speeds:
N Design: 500 – 2600 ¹/
rpm
K Design: 500 – 3500 ¹/
rpm