Engineering manual - SAB 355 Screw compressor unit (including ATEX)
004100 en 2020.10
129/156
Maintenance instructions
Parameter Unit Method
Sabroe oil
PAO 68
Sabroe oil
AP 68
Sabroe oil
A 100
Tar-
get
spec.
Max.
Min.
Tar-
get
spec.
Max.
Min.
Tar-
get
spec.
Max.
Min.
Viscosity @40°C cSt ASTM D 445 66 76 53 64 74 51 100 115 80
TAN*1) mg KOH/g ASTM D 664 0.03 0.2
-
0.01 0.02
-
0.05 0.02
-
SAN*2) mg KOH/g ASTM D 665
-
0
- -
0
- -
0
-
Water
ppm
Karl Fisher
-
100
- -
100
- -
100
-
Apperarance
- - re-
port
re-
port
re-
port
Colour
-
ASTM D
1500
re-
port
re-
port
re-
port
Pentane Insolubles
(Sum)
W% MM 490
-
0.05
-
0.05
- -
0.05
-
Oxidation abs/cm IR,1700-
1720/cm
-
5
- -
5
- -
5
-
Nitration
abs/cm IR,1627-
1637/cm
-
5
- -
5
- -
5
-
Nitro Compounds abs/cm
IR,1547-
1557/cm
-
0.5
- -
0.5
- -
0.5
-
Maximum values for metal content in the oil)
Lead
ppm
ICP
-
10
- -
10
- -
10
-
Copper
ppm
ICP
-
10
- -
10
- -
10
-
Silicium
ppm
ICP
-
25
- -
25
- -
25
-
Iron
ppm
ICP
-
100
- -
100
- -
100
-
Chromium
ppm
ICP
-
5
- -
5
- -
5
-
Aluminium
ppm
ICP
-
10
- -
10
- -
10
-
Tin
ppm
ICP
-
10
- -
10
- -
10
-
1) TAN (Total Acid Number) is only non-ammonia applications
2) SAN (Strong Acid Number) is only reported for non-ammonia applications
A report is compiled for every sample received. This report will describe:
• whether the oil can still be used without taking any further action.
• whether the oil can be used after it has been filtered through a very fine filter. If this is nec-
essary, the oil must be pumped directly from the compressor unit through a 3 micron filter
and back to the unit. The system must be completely closed to prevent the oil from being
affected by moisture in the air.
• whether the oil can no longer be used.
The report will always be sent to the address stated on the sample label included in the form set.
A copy will be sent to Johnson Controls Denmark so that we are in a position to advise you, if
required.
11.13 Oil change
The oil in the unit must be changed after a specific number of operating hours or when an oil anal-
ysis shows that a change is required.
We advise you to contact your local Johnson Controls representative about oil change as it is rec-
ommended to replace all filters in the unit at the same time. Local contact details are available on
www.sabroe.com.
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