Ammann ASC 130 - Operating the Machine at Higher Temperature and Humidity

115ASC110/ASC130/ASC150/ASC200/ASC250
OPERATING INSTRUCTIONS
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2.9.3.2. Operating the machine at higher
temperature and humidity
Engine power output decreases with increasing tempera-
ture and air humidity. With regards to the fact that the two
factors are independent of each other, their influence can
be described as follows:
- every 10 °C (18 °F) of temperature rise results in power
output decrease of up to 4 % (at a constant humidity)
- every 10 % of relative humidity rise results in power
output decrease of up to 2 % (at a constant tempera-
ture).
At high ambient temperatures when hydraulic oil tempe-
rature reaches permanently around 90 °C (194 °F), it is
recommended to exchange hydraulic oil for oil a grade
higher - of kinematic viscosity 100 mm
2
/s (e.g. BP BAR-
TRAN HV 100, ESSO UNIVIS N100, etc.).
! NOTE !
When working under extreme conditions, when
cooling liquid or hydraulic oil temperatures reach
maximum allowed limits, it is possible to increase
cooling capacity of the cooling system by removing
bonnet lower shields resulting in better withdrawal
of hot air from the engine compartment.
• If the hydraulic system is filled with oil of grade
HV 46, the maximum allowed oil temperature is 80 °C
(144 °F);
HV 32, the maximum allowed oil temperature is 70 °C
(158 °F).