Bitzer BSE32 Manuel page 33

Warning values for used oils
The listed polyolester oils are categorized as group KD according to DIN51503, Part 1. To determine the used con-
dition of the oil, e.g. with respect to water content or total acid number (TAN), the reference values of DIN 51503,
Part 2, apply.
Oil Kinematic viscosity at 40°C
(DIN EN ISO3104)
BSE32 outside of 27 .. 37 cSt (*)
BSE55 outside of 47 .. 63 cSt (*)
BSE85K outside of 68 .. 92 cSt (*)
Tab. 4: Warning values for used BITZER oils for HFC and HFO refrigerants.
(*): that is ± 15% of the value for new oil
When using A2L refrigerants
WARNING
Risk of refrigerant evaporation from the used oil.
Increased risk with A2L refrigerants due to flammability!
Used oil may still contain relatively high percentages of dissolved refrigerant even at atmospheric pressure.
Transport and storage: Fill used oil into a pressure-resistant vessel. Store under a nitrogen atmosphere
(holding charge).
Elastomer compatibility
Relevant literature recommends the following seaI materials for polyolester oils (POE) with HFC and HFO refriger-
ants:
• acrylonitrile butadiene rubber, nitrile content >36%
• hydrogenated acrylonitrile butadiene rubber, nitrile content >36%
• ethylene propylene diene rubber
KT-500-9 // PDF Download
Max. water content
(DIN51777-2)
200 mg H O/kg oil
2
200 mg H O/kg oil
2
200 mg H O/kg oil
2
Total acid number
(DIN51558-1)
0.2 mg KOH/g
0.2 mg KOH/g
0.2 mg KOH/g
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