S-SERIES:
■ S-Series SIGMA compressor cooling oils are synthetic lubricants.
■ S-Series SIGMA compressor cooling oils are formulated from the most advanced synthetic lu‐
bricants. These ”synthetic” lubricants begin as high quality petroleum feed stock. They are then
refined, processed and purified into fluids with very consistent molecular structure. These oils are
carefully blended to produce extremely consistant lubricants with superior properties. SIGMA
synthetic lubricants feature all the advantages of both PAO and diester fluids.
■ S–460 lubricant is recommended for compressors operating in ambient temperatures between
40 °F and 105 °F.
Specialty KAESER LUBRICANTS:
■ S–680 lubricant may be used when ambient temperatures are always between 70 °F and 105 °F.
■ FG–460 synthetic hydrocarbon based food grade lubricant is designed for use in rotary screw
compressors in the application where incidental food contact may occur with the discharge air.
This lubricant meets the requirements of the FDA Regulation 21 CFR §178.3570 and is
USDA H–1 approved and NSF certified. FG–460 is approved for canning, food packing, meat and
poultry processing and other applications where incidental food contact may occur.
2.10 Cooling Oil Volume
Air-Cooling
ASD 25 ASD 30 ASD 40S ASD 40
Total charge [gal] 4.2 4.2 4.2 4.2
Top-up quantity [quart]
(Minimum–Maximum)
2.1 2.1 2.1 2.1
Tab. 10 Cooling Oil Charge
Heat Recovery
The charge of cooling oil for machines with heat recovery is increased by the volume of oil in
the heat exchanger and connecting lines.
ASD 25 ASD 30 ASD 40S ASD 40
Additional charge volume
[quart]*
* Enter the volume required by your heat recovery system.
Tab. 11 Cooling oil charge (option W1)
ASD 25 ASD 30 ASD 40S ASD 40
Additional charge volume
[quart]
1.2 1.8 1.8 1.8
Tab. 12 Cooling oil charge (option W2)
2 Technical Data
2.10 Cooling Oil Volume
9_5721 06 USE
Service Manual Screw Compressor
ASD T Tri-Voltage
7
Option K1
Option W1/W2/W3
Option W1
Option W2
Option W3
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