GEA Bock HG4 CO2 - Manual (Page 8)

8
D
GB
F
E
96020-02.2015-DGbFEI
3| Areas of application
The compressors are filled at the factory with the following oil type:
GEA Bock C 85 E (only this oil may be used)
3.1 Refrigerants
•
CO
2
: R744
3.2 Oil charge
3.3 Limits of application
Evaporation temperature (°C)
Condensing temperature (°C)
Suction gas superheat (K)
Fig. 5
Max. permissible operating
pressure (LP/HP) 1) : 27/55 bar
1) LP = Low pressure
HP = High pressure
Unlimited
application range
1 HGX4/385-4 CO
2
Maximum condensing
temperature t
c
= 0°C
2 HGX4/555-4 CO
2
Maximum condensing
temperature t
c
= -5°C
R744
1
2
ATTENTION The correct oil level is shown
in figure 4.
Damage to the compressor
is possible if overfilled or
underfilled!
max.
min.
1,8 Ltr. oil level
Fig. 4
~
~
ATTENTION Compressor operation is possible within the operating limits
shown in the diagrams. Please note the significance
of the shaded areas. Thresholds should not be selected as
design or continuous operation points.
- Permissible ambient temperature (-20°C) - (+60°C)
- Max. permissible discharge end temperature 140°C.
- Max. permissible switching frequency 12x /h.
- A minimum running time of 3 min. steady-state condition
(continuous operation) must be achieved.
For operation with frequency converter:
- The maximum current and power consumption must not be
exceeded. In the case of operation above the mains frequency,
the application limit can therefore be limited.