MULTIQUIP Rammax RX1575 - Machine Operation Under High Temperatures and Humidity

PAGE 70 — RX1575 SERIES TRENCH ROLLER • OPERATION MANUAL S/N 3069933~ — REV. #0 (11/29/23)
OPERATING PARAMETERS
77RAMMAX 1575
OPERATION MANUAL
2.9.3 Machine operation under high
temperatures and humidity
Engine power output decreases with increasing temperature
and air humidity. Both power reducing factors are independent
on each other:
- a rise in temperature by every 10°C (18°F) results in a
drop of power output by up to 4 % (at constant humid-
ity),
- a rise in relative humidity by every 10 % results in a drop
of power output by up to 2 % (at constant temperature).
Note
The maximum permitted oil temperature for VG 46 class oil is
80°C (176°F); the maximum permitted oil temperature for VG
32 class oil is 70 °C (158 °F)
In the environment where hydraulic oil temperature remains
constantly around 90 °C (194 °F), we recommend exchanging
the hydraulic oil with oil which is one-class denser, with HV 68
cinematic viscosity.
2.9.4 Machine operation at higher altitudes
In higher altitude, engine power output decreases as a result of
lower atmospheric pressure and specic density of incoming air.
The engine is equipped with an altitude sensor which adjusts
fuel injection, eliminating the black smoke eect during opera-
tion of the machine at higher altitudes, in accordance with the
EPA regulation.
This function is activated automatically at the altitude of 800
m above sea level, and from this altitude up the engine output
power is gradually reduced. For instance, at the altitude of 2000
m above sea level, the power output is reduced by 20 % of the
maximum power output in regular conditions and the torque is
reduced by 30 % (refer to the table).
Altitude (m above sea level) 0 1000 2000 3000
Power output reduction (%) 0 10 20 30
Max. torque reduction (%) 0 20 30 35
The engine power depends on the environment in which
the machine is working.
2.9.5 Machine operation in very dusty
environment
When working in very dusty environment, please shorten the
intervals of cleaning and replacing of the air lter elements and
shorten the intervals of cleaning of the coolers.
The recommended interval of cleaning is once a week.
2.9.6 Driving with vibrations on compacted
and hard materials
When operating the Machine with vibration on hard materi-
als (e.g. stony loose material), or with high level of compacting
the base material, there can be even loss of contact between
the drum and the material compacted (so called vibro-hit).
This state will show in the increased vibration transfer into the
Machine frame. Its partial elimination is possible via increasing
the travel speed or changing the Machine vibration parameters
(with the use of lower amplitude).
The driving with vibration on hard (frozen, concrete,
overcompacted) surface or on bedrock is forbidden.
There is a danger of damage to the machine.