GEA Bock HG8 - Manual (Page 8)

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3| Areas of application
The compressors are filled at the factory with the following oil type:
- 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. HG
X8/3220-4).
3.1 Refrigerants
• HFKW / HFC:
R134a, R404A/R507, R407C
• (H)FCKW / (H)CFC: R22
3.2 Oil charge
INFO For refilling, we recommend the above oil types.
Alternatives: see lubricants table, Chapter 7.4.
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 supplementary cooling:
- Use only oils with high thermal stability.
- Avoid continuous operation near the threshold.
- Additional fans (accessories) or water-cooled cylinder covers
(accessories) can be used for additional cooling.
For operation with capacity regulator:
- The suction gas superheat temperature may need to be reduced
or set individually when operating near to the threshold.
- The limits of application are reduced.
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.
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!
3.3 Limits of application
ATTENTION The correct oil level is shown
in figure 3.
Damage to the compressor
is possible if overfilled or
underfilled!
max.
min.
3,0 Ltr. oil level
Fig. 3
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