Roto Synthetic Fluid ULTRA
Roto Synthetic Fluid ULTRA is a synthetic oil based 4000 hours lubricant, specially developed
for use in single stage oil injected screw compressors running in demanding conditions. Roto
Synthetic Fluid ULTRA can be used for compressors operating at ambient temperatures between
0 ˚C (32 ˚F) and 40 ˚C (104 ˚F). For more extreme conditions, or when continuously operating at
temperatures above 40 °C (104 °F), it is recommended to use Roto Synthetic Fluid XTEND
DUTY.
See the table bloew for recommended oil exchange intervals:
Ambient temperature Element outlet
temperature
Exchange interval Maximum time interval
up to 35°C (95°F) up to 100°C (212°F) 6000 2years
from 35°C (95°F) up to
40°C (104°F) (see note)
from 100°C (212°F) up to
105°C (221°F)
4000 2years
from 40°C (104°F) up to
45°C (113°F) (see note)
from 105°C (221°F) up to
110°C (230°F)
2000 2years
Note: the presence of dust and/or high humidity may require a shorter exchange interval. Consult
Atlas Copco.
Roto Synthetic Fluid XTEND DUTY
Atlas Copco's Roto Synthetic Fluid XTEND DUTY is a high quality synthetic 8000 hours
lubricant for oil injected screw compressors which keeps the compressor in excellent condition.
Because of its excellent oxidation stability, Roto Synthetic Fluid XTEND DUTY can be used for
compressors operating at ambient temperatures between 0 ˚C (32 ˚F) and 46 ˚C (115 ˚F).
See the table below for oil exchange intervals:
Ambient temperature Element outlet
temperature
Exchange interval Maximum time interval
up to 35°C (95°F) up to 100°C (212°F) 8000 2 years
from 35°C (95°F) up to
40°C (104°F) (see note)
from 100°C (212°F) up to
105°C (221°F)
6000 2 years
above 40°C (104°F) above 105°C (221°F) 5000 2 years
Note: the presence of dust and/or high humidity may require a shorter exchange interval. Consult
Atlas Copco.
* Whichever comes first.
6.3 Storage after installation
Procedure
Run the compressor regularly, e.g. twice a week, until warm.
If the compressor is going to be stored without running from time to time, protective
measures must be taken. Consult Atlas Copco.
Instruction book
API161475 65
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