ROTORCOMP EVO15, Operating Manual

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Operating Manual -
EVO ®
Line
[en] 07/2020 8.1
8 Lubricants and Operating
Materials Maintenance Parts
8.1 Lubricants and operating materials
8.1.1 Oil recommendation
RC screw compressor air ends must be operated
with an oil suitable for special requirements. This
oil must be approved by the lubricant manufac-
turer for screw compressor air ends. It must even
be suitable under unfavorable operating condi-
tions, such as soiling of the intake air with gases,
solvent vapors and exhaust gases and at high
ambient temperatures.
Suitable oil types and oil manufacturers can be
specified for screw compressor air ends on
request. As oil for screw compressor air ends,
refined oils (mineral oils) synthetic oils and bio oils
(biodegradable) can be used as screw compres-
sor oil.
The materials and gaskets used in the screw com-
pressor air end system must be taken into account
when selecting the oil type. Corrosion and other
material damage may not occur.
It is not permissible to mix different oils.
8.1.2 Topping up oil
Use the same brand and the same oil type
(see adhesive label on the oil separating tank).
Dropping of the room temperature to below -5°C/
23°F with the compressor stopped should be
avoided.
8.1.3 Measures at low room temperature
Sufficient room heating.
At an ambient temperature close to freezing point,
the system must be prevented from freezing by
installing a standstill heater.
8.1.4 Piping materials
Plastic compressed-air piping systems can be
attacked by the oil used in the screw compressor
air ends.
Note:
See the information sheet!
The requirements placed on the cooling oil in the
screw compressor air ends include the following:
– High resistance to aging
– High dispersive power
– Flash point: over 200°C/392°F
– Minimum foaming
– High corrosion protection
– Operating temperature: up to 110°C/230°F
– Select suitable viscosity class, e.g. ISO VG 68
– viscosity class:
A minimum viscosity of approx. 10 cST at oper-
ating temperature must be ensured
Caution:
Be sure to comply with the oil viscosity, as other-
wise there is a danger for the bearing service life.
Rotorcomp offers optimized and tested EVO-Lube
oils for screw compressor air ends and recom-
mends their use.