Ammann ASC 70, Operating Manual

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91 ASC 70
396112
OPERATION MANUAL
2.9.4. Operating the Machine at high
temperatures and humidity
The higher the air temperature and humidity the lower the en-
gine performance is. Both factors reducing the performance are
dependent on each other:
- Each 10 °C (18 °F) increase of temperature means capaci-
ty drop of up to 4 % (at constant humidity)
- Each 10 % increase of relative humidity means capacity
drop of up to 2 % (at constant temperature).
Machine cooling will improve through hot air removal away
from engine compartment when you remove the fender shields
of the bonnet.
Note
For oil of HV 46 class the max admissible oil temperature will be
80 °C (176 °F), for HV 32 oil the max admissible oil temperature
will be 70 °C (158 °F).
In the environment where hydraulic oil temperature stays con-
stantly round 90 °C (194 °F) we recommend to exchange hydrau-
lic oil for oil denser by one class, with HV 100 cinematic viscosity.