Areas Of Application; Refrigerants; Oil Charge; Limits Of Application - GEA FK50/460 N Assembly Instructions Manual

3| Areas of application

3.1 Refrigerants

• HFKW / HFC:
• (H)FCKW / (H)CFC:

3.2 Oil charge

The compressors are factory-filled with the following oil type:
- for R134a, R404A/R507, R407C
- for R22
Compressors with ester oil charge (FUCHS Reniso Triton SE 55) are marked with an X in the type
designation (e.g. FKX50/775 N).

3.3 Limits of application

D
GB
F
I
TR
CN
8
R134a, R404A/R507, R407C
R22
INFO!
For recharging, we recommend the above oil types. Alternatives are:
see lubricants table, Chapter 6.5.
ATTENTION! Compressor operation is possible within the limits of application
shown in the diagrams. Please note the significance of the
shaded areas. The limits of application must be observed.
Thresholds should not be selected as design or continuous
operating points.
- M ax. permissible discharge end temperature: 140 °C
- Max. permissible ambient temperature: 100 °C
- M ax. permissible switching frequency: 12 x /h
- A minimum running time of 2 min. at equilibrium
(continuous operation) must be achieved.
Avoid continuous operation near the threshold. Should the
compressor happen to be used near the thresholds, we
recommend the use of a thermal protection thermostat
(Accessories, Chap. 7).
For operation with capacity regulator:
- Continuous operation, when the capacity regulator is activated, is
not permissible and can cause damage to the compressor.
- The suction gas superheat temperature may need to be reduced or
set individually when operating near to the threshold.
- When the capacity regulator is activated, the gas velocity in the
system can not under certain circumstances ensure that suffici-
ent oil is transported back to the compressor.
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!
FUCHS Reniso Triton SE 55
FUCHS Reniso SP 46