KAESER SK 19, Service Manual, Page: 7 / 85

Technical Specification
1 --- 3
1.8 Fluid recommendations
Lubrication of an air compressor is essential to reliable operation. Carbon and varnish can
form in compressor oils. These deposits block the flow of lubricant and cause excessive
wear and failure of moving parts. Contamination of the fluid can allow the formation of
acids, causing extensive internal corrosion. Water may be condensed decreasing the
fluid’s lubricity.
Fluid in rotary compressors does much more than lubricate. During the compression pro-
cess, it acts as a sealant in the airend which is important for maximum efficiency. The fluid
also absorbs much of the heat of compression to cool the airend and reduce the tempera-
ture of the compressed air. It’s not enough that a compressor fluid lubricates well, it must
stand up to the heat, pressure and contaminants that are present in every air compressor.
1.8.1 General Information
KAESER synthetic lubricants should be stored in a protected location to prevent conta-
mination. Do not re---use drums; flush and send to reconditioner.
Although the KAESER synthetic is not highly flammable, it will burn. While KAESER syn-
thetic compressor oil is less flammable than equal viscosity mineral oils, it cannot be classi-
fied as a fire---resistant fluid. It has a flash point above 460
•
F. Since the user has total con-
trol over the conditions of the compressor lubricant, he assumes total responsibility for its
safe usage.
Material Safety Data Sheets are available for each lubricant from your KAESER authorized
distributors.
Regardless of the lubricant selected, the KAESER Sigma lubricants will separate readily
from water. If condensate occurs it can easily be removed. Let the compressor sit so that
any water can drain back to the separator tank and separate to the bottom. See
chapter 9.14 proper draining procedure.
1.8.2 KAESER Fluids
KAESER COMPRESSORS has several lubricants available that are specially formulated to
match these demands. They feature excellent lubricity, outstanding demulsibility (ability to
separate from water), and long life.
RECOMMENDED KAESER LUBRICANTS
SIGMA
LUBRICANT
DESCRIPTION MAXIMUM RECOMMENDED
CHANGE INTERVAL*
First Oil Change Subsequent Oil
Change
M ---460
S---460
ISO 46 Semi---Synthetic Lubricant
ISO 46 Synthetic Lubricant
2,000 Hours
6,000 Hours
4,000 Hours
8,000 Hours
* Oil changes may need to be more frequent depending on ambient conditions.
When high ambient temperatures or dirty conditions are present, oil changes may be
necessary every 1,000 hours (4,000 hours for synthetic) or even shorter intervals. Oil
change intervals required should be determined through periodic oil analysis.
M -- SERIES SEMI -- SYNTHETIC LUBRICANTS
-
M ---Series SIGMA compressor fluids are the highest quality petroleum lubricants.
M ---460 is specially blended to provide reliable performance in KAESER screw com-
pressors.