Hardi ISOBUS VT, Operator'S Manual

Page: 79 / 104

11.1
11 - Fault finding
Operational problems
Fault finding the system
When a problem occurs with the system, it is good practice to go through the general fault finding schematic, before
contacting your HARDI® dealer.
Problem Possible cause Try/Test Check/Behavior
Flow Is there flow readout? Select l/min in the system menu. Does this correspond to actual flow?
Use test menu. (menu 4.5.1 + 4.5.4.1) Are there signal from flowmeter?
Are flow PPU correct? Max. 10% change from given values.
Does pressure equalization valves leak?
(Not COMMANDER/EFC).
Speed Is there speed readout? Use test menu. (menu 4.5.1 4.5.4.1) Any signal from sensor?
Check LED diode on sensor. Sensor at metal = ON, Sensor at hole = OFF.
Is speed stable? Max. deviation ±0,15 km/h Distance to wheel speed ring 4-5 mm?
Is speed ring buckled?
Does sensor sense middle of holes?
Does speed ring vibrate when running?
Active boom width Signal received? Select boom width menu. Correspond to actual boom width?
DynamicFluid4 pressure regulation
valve Does manual control work? Turn valve to maximum. Can the valve turn reverse, both at min. and
max.?