Bitzer BSE32 Manuel page 37

Warning values for used oils
The listed polyolester oils and the polyalkylene glycol oil are categorized as group KB according to DIN51503, Part
1. To determine the used condition of the oil, e.g. with respect to water content or total acid number (TAN), the ref-
erence values of DIN 51503, Part 2, apply.
Oil Kinematic viscosity at 40°C
(DIN EN ISO3104)
BSE60K outside of 47 .. 63 cSt (*)
BSE85K outside of 68 .. 92 cSt (*)
BSG68K outside of 58 .. 78 cSt (*)
Tab. 8: Warning values for used BITZER oils for R744.
(*): that is ± 15% of the value for new oil
Elastomer compatibility
Relevant literature recommends the following seaI materials for polyolester oils (POE) and polyalkylene glycol oils
(PAG) with R744:
• hydrogenated acrylonitrile butadiene rubber, nitrile content >36%
• ethylene propylene diene rubber
• fluorinated rubber
KT-500-9 // PDF Download
Max. water content
(DIN51777-2)
150 mg H O/kg oil
2
150 mg H O/kg oil
2
800 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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