OPERATOR'S MANUAL MAINTENANCE

Section C - Electrics
Basic System Operation
Hydraulic Temperature Sensor/Warning
C-87 C-87
9803/9880-3
Hydraulic Temperature Sensor/Warning
Operation
C005700GB-2
Fig 80.
The hydraulic system is fitted with a thermistor and a
thermal switch to measure temperatures. The temperature
is displayed to the operator by means of a bar graph
gauge. The actual values can be displayed via the EMS's
SET and MODE menu.
When the hydraulic oil temperature reaches 97ºC the EMS
will illuminate the warning lamp. If the temperature
continues to rise the bar graph will flash on-off and an
audible warning and "HYD.TEMP" message will be given.
The audible warning can be cancelled by pressing the
"ACK" button on the EMS.
The overheat switch is included as a safety measure in
case of the thermistor failure. If this input is grounded then
the EMS will illuminate the warning lamp, sound the
audible alarm and display the overheat message. The
audible warning can be cancelled by pressing the "ACK"
button on the EMS.
Note: When the temperature reaches 98°C the pump
should be lowered to E mode.