GEA Bock F - Manual (Page 9)

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F
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09702-09.2013-DGbF
3 | Areas of application F, F-NH
3
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 operating points.
- 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.
Avoid continuous operation near the threshold.
For operation with supplementary cooling:
- Use only oils with high thermal stability.
For operation with capacity regulator:
- The suction gas superheat temperature may need to be reduced
or set individuallywhen operating near to the threshold.
When operating in the vacuum range, there is a danger of air
entering on the suction side. This can cause chemical reactions, a
pressure rise in the condenser and an elevated compressed-gas
temperature. Prevent the ingress of air at all costs!
The compressors are filled with the following oil type at the factory:
- for R134a, R404A/R507, R407C FUCHS Reniso Triton SE 55
- for R22 FUCHS Reniso SP 46
Compressors with ester oil charge (FUCHS Reniso Triton SE 55) are marked with an X in the type
designation (e.g. F
X16/2051).
3.1 Refrigerants
• HFKW:
R134a, R404A/R507, R407C
• (H)FCKW: R22
NH
3
: R717
3.2 Oil charge
3.3 Operating limits
INFO! For refilling, we recommend the above oil types.
Alternatives: see lubricants table, Chapter 7.6
The oil level must be in the visible
part of the sight glass; damage
to the compressor is possible if
overfilled or underfilled! ATTENTION!
Fig. 5
max. oil level
min. oil level