GEA Bock HG12Р CO2 - Manual (Page 8)

8
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GB
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09917-02.2015-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
Evaporation temperature (°C)
Condensing temperature (°C)
Suction gas superheat (K)
Suction gas temperature (°C)
R744
1
Fig. 5
Max. permissible operating
pressure (LP/HP) 1) : 40/55 bar
1) LP = Low pressure
HP = High pressure
Unlimited
application range
1 HGX12P/75-4 CO
2
Maximum condensing
temperature t
c
= 0°C
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 8x /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.
3.3 Limits of application
The oil level must be in the
visible part of the sight
glass; damage to the com-
pressor is possible if over-
filled or underfilled! ATTENTION!
max.
min.
0,5 Ltr. oil level
Fig. 4
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