Husqvarna RC 455 Bedienungsanweisung Seite 20

Menu functions
State the ramp time value:
• Press OK when the part menu is shown.
• The display shows: CHANGE RAMP TIME and the
time in seconds.
• Scroll using the arrow keys to state the required ramp
time. Hold the arrow key held down to increase the
scrolling speed. The scale is graduated from 0.0 to
9.9 seconds.
• Press OK.
• Press the down arrow to continue to "Back to the
menu".
4 Sensor on/off calibrate
This sub-menu contains the setting options for the
hydraulic unit's different pressure sensors.
The sub-menu consists of seven part menus:
4.1 Temperature sensor for hydraulic oil
4.2 Pressure sensor for the filter
4.3 Voltage sensor
4.4 Pressure sensor for hydraulic pressure
4.5 Calibrate pressure sensor for hydraulics
4.6 Calibrate voltage sensor
4.7 Calibrate potentiometer
4.1 Temperature sensor for hydraulic oil
A temperature sensor is fitted by the electronic card. The
sensor ensures that the electronics do not overheat.
When the temperature sensor is on, the control system
continuously reads the temperature.
NOTE!
The hydraulic unit can be damaged, if the
temperature sensor is switched off.
Turn on/ turn off the temperature sensor:
• Press OK when the part menu is shown.
The display shows: TEMP. SENSOR FOR HYDR. OIL
and ON or OFF.
• Press OK to switch between ON and OFF.
• Press the down arrow to continue to the next part
menu.
20 - English
4.4 Pressure sensor for the hydraulic pressure
The pressure sensor measures the hydraulic pressure to
the blade
NOTE!
The hydraulic unit's control system switches
off, if the pressure sensor is switched off. The
hydraulic system may then be difficult to
control with a high load.
Turn on/ turn off the pressure sensor:
• Press OK when the part menu is shown.
The display shows: PRESSURE SENSOR FOR
HYDRAULIC PRESSURE and ON or OFF.
• Press OK to switch between ON and OFF.
• Press the down arrow to continue to the next part
menu.
4.5 Calibrate pressure sensor for hydraulics
The pressure sensor that measures the oil pressure for
blade rotation is possible to calibrate.
The pressure sensor must be calibrated according to the
order zero point and maximum point.
To calibrate the zero point:
1. Connect the incoming power cable to 63 A.
2. Connect an oil pressure reducing valve with a pressure
gauge to the blade rotation's hydraulic couplings.
3. Select the sub-menu "Sensor on/off calibrate" from the
"Settings" menu.
4. Scroll using the arrow keys and press OK when
"Calibrate pressure sensor for hydraulics" is shown.
5. Press OK again when the display shows CALIBRATE
ZERO POINT.
6. Start the hydraulic unit.
7. Adjust the oil pressure reduction valve to 0 bar.
8. Press arrow up/down until the value for the oil pressure
is shown as 0 bar, i.e. the same value as on the
pressure gauge on the oil pressure reduction valve.
Operator's Manual RC 455