Bitzer BSE32 Manuel page 41

Warning values for used oils
The listed oils SHC226E (PAO) and BSG68K (PAG) are categorized as group KE 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 refer-
ence values of DIN 51503, Part 2, apply.
Oil Kinematic viscosity at 40°C
(DIN EN ISO3104)
SHC226E outside of 57 .. 76 cSt (*)
BSG68K outside of 58 .. 78 cSt (*)
Tab. 11: Warning values for used BITZER oils for R290.
(*): that is ± 15% of the value for new oil
In case of maintenance, be sure to observe the following:
NOTICE
!
!
Danger of spark formation due to unintended switching operations or overheating of the oil heater during oil
change.
Prior to interventions in the refrigerant circuit, interrupt the power supply on the main switch!
Observe special regulations for storage and transport of flammable gases.
When performing maintenance work indoors, always switch on room ventilation!
NOTICE
!
!
Danger of spark formation, when discharging electrostatic charges!
Take measures against electrostatic charging of non-metallic components, tools, auxiliaries and clothing!
For example: Wear suitable antistatic clothing, use spark-free tools. If necessary, perform additional earth-
ing of conducting parts.
NOTICE
!
!
Fire hazard!
The used oil contains a relatively large amount of dissolved refrigerant.
Pack used oil safely. Dispose of in an environmentally friendly manner.
R290 or R1270 dissolve very well in refrigeration compressor oil. Used oil from such systems may still contain
relatively high percentages of dissolved R290 or R1270 even at atmospheric pressure. These components gas
out. Observe during storage and transport:
▶ Fill used oil into pressure resistant containers.
▶ Fill containers with nitrogen as a protective gas and close them.
▶ Mark them, e. g. with the warning sign "flammable substance" W022 from ISO7010.
Elastomer compatibility
Relevant literature recommends the following seaI materials for polyalkylene glycol oils (PAG) and poly-alpha-olefin
oils (PAO) with R290:
• chlorobutadiene rubber, e.g. neoprenes
• acrylonitrile butadiene rubber, nitrile content >36%
• hydrogenated acrylonitrile butadiene rubber, nitrile content >36%
• fluorinated rubber
KT-500-9 // PDF Download
Max. water content
(DIN51777-2)
80 mg H O/kg oil
2
800 mg H O/kg oil
2
Total acid number
(DIN51558-1)
0.1 mg KOH/g
0.2 mg KOH/g
41