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8.1 Recommended lubricant for
compressor
Note
In these screw compressors, circulating oil
has not only a lubricating function, but in
particular it also has cooling and sealing
functions. It is therefore exposed to more
difficult conditions. In particular the
temperature conditions at the installation
site and the consistency of the air (dust,
dirt, and humidity content, as well as
chemical influences) must be taken into
account when selecting a suitable lubricant.
Attention
Do not mix oils of different
specifications.
The maintenance intervals and the
maximum and minimum operating
temperatures given in this operating
manual only apply when high-quality
multi-grade oils are used.
Use of the wrong oil leads to impairment
of function.
Change the compressor oil more
frequently than specified if the
equipment is operated under abnormal
conditions, i.e. at a high ambient
temperature, high air humidity or in a
dusty environment. If necessary,
analyse the oil.
Out of consideration for the high loads
imposed on the lubricant in screw
compressors with oil injection cooling, we
recommend the use of suitable, non
ageing, non foaming, corrosion-protective
oils. They must meet the following
requirements for hydraulic fluids:
H-LP 32 and H-LP 46 in accordance with
DIN 51524, Part 2, June 1985.
The viscosity of the lubricants should
comply with viscosity class ISO VG 32 DIN
51519, July 1976, with 28 - 35 mm
2
/s(cSt) /
40 °C, or if the ambient temperature is
constantly above 25 °C, with viscosity class
ISO VG 46 DIN 51519, July 1976, with
41 - 50 mm
2
/s(cSt)/40 °C.
Attention
Conventional engine oils marked HD
must not be used.
When using oils with the “Brief De-
scription HYD 10/HYD 20" in accordance
with the ‘Standard Lubricants for Building
Machinery and Vehicles’ published by the
‘Hauptverband der Deutschen Bauindustrie
e.V.’ (Principal Association of the German
Building Industry), only the given hydraulic
fluids may be used in accordance with
ISO VG 32 and ISO VG 46.
If other lubricants are to be used, please
contact:
CompAir Drucklufttechnik GmbH
Argenthaler Straße 11
D-55469 Simmern/Hunsrück
Telephone 06761 / 832-339
Telefax 06761 / 832-421
or your authorized dealer or your local
branch.
8.2 Recommended engine oil
Lubricant specifications for the driving
engine can be found in the enclosed
engine operating manual.
8.3 Tool lubricants
Attention
Do not run the machine with an empty
oiler tank! The tank must always
contain a minimum of 0.2 l of tool oil.
The wrong tool lubricants lead to
deposits that cause malfunctions in the
appliances connected!
For the perfect lubrication of concrete
breakers and pneumatic spades, we
recommend the use of CompAir oilers or
automatic pipe oilers, using the special
synthetic CompAir oil AES 82.
The special advantages of CompAir oil are
as follows:
* Biodegradable,
* Ice guard down to -50 °C, for use with
sound absorbers,
* Very good lubricity, thus wear-reducing,
* No irritating exhaust gases, work in
enclosed rooms possible,
* Good cleaning effect, no residue
formation
* Excellent preservation properties,
protects from corrosion.
When using compressed air consumers
made by other manufacturers, then their
regulations must be observed.
8.4 Diesel fuel
Use common diesel fuel with a sulfur
content of less than 0.5 %. If the sulfur
content is higher, oil has to be changed at
shorter intervals.
The following fuel specifications are
applicable:
* DIN 51 601
* Nato Codes F 54, F 75, and F 76
* BS 2869: A1 and A2 (observe sulfur
content with A2)
* ASTM D 975-81 : 1-D and 2-D
* VV-F-800a : DF-A, DF-1, and DF-2.
Note
See engine instruction manual.
At low temperatures,paraffin precipitation
can cause blocks in the fuel system and
disruptions in operation. Below outside
temperatures of 0 °C use winter diesel fuel
(to -15 °C). (This is usually available at gas
stations in good time before the winter
season begins.) Diesel fuel with additives is
frequently offered for use at temperatures
as low as -20 °C („Superdiesel“).
Note
Only mix in the tank. First put in the
required quantity of petroleum, then fill up.
See engine instruction manual.
Below -15 °C or -20 °C, petroleum must
be added.
If it is necessary to use summer diesel
fuel below 0 °C, petroleum can also be
added up to 60 %.
In most cases, adequate resistance to
low temperatures can be achieved by
adding a product to improve flow properties
(fuel additive). Consult your engine service
station.
Attention
The compressor must not be fuelled
with bio-diesel (DIN 51606) or vegetable
oil.
8.5 Recommended lubricants for the
bogies
For relubrication use only lithium saponified
grease which fulfils the following
specifications:
* consistency groups (NLGI) 2
DIN 51818
* worked penetration 265-295
DIN ISO 2137
* dripping point > 180 °C
DIN ISO 2176
* operational temperature
– 40 °C … +140 °C
This corresponds to a DIN 51502
lubrication grease, designation KP2N-4U.
Greases with different thickeners
(soap base) must not be mixed.
Recommended grease: Fuchs Renolit
LZR 2.
8. Fuels
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