Troubleshooting Schedule - Husqvarna DXR140 Operator's Manual

Troubleshooting schedule

!
Following the trouble shooting guide will provide you with tips to facilitate the trouble shooting process. You can also
perform simpler trouble shooting operations. The operator may only carry out the maintenance and service operations
that are described in this Operator's Manual. More extensive interventions must be carried out by an authorized service
workshop.
Always start by checking any error messages on the remote control. Follow the instructions for the respective message
in accordance with the error messages section.
Problem
The electric motor
does not start.
Fuses for the mains
connection blow when
starting.
The motor runs but the
hydraulic functions
have no power or do
not work at all.
Arm movements and
tool function run
slowly.
TROUBLESHOOTING
WARNING! Most accidents involving machines occur during trouble shooting, service
and maintenance as staff have to locate themselves within the machine's risk area.
Prevent accidents by being alert and by planning and preparing the work. You can also
refer to "Preparations for maintenance and service" in the "Maintenance and service"
section.
If service operations or trouble shooting does not require the machine to be switched
on, the power cable must be removed and positioned so that it cannot be connected by
mistake.
Cause
Emergency stop/machine
stop is pressed.
Too low mains voltage to the
machine.
A fuse has blown.
No radio communication
between remote control and
machine.
The machine's fuses have too
low a rating.
Electric motor blown.
The hydraulic pump has cut
out.
Too little hydraulic fluid in the
tank. (Noise emanating from
the pump.)
Circulation valve open.
Fault in the pump regulator.
Standby pressure set too low.
The potentiometer that
controls mechanical
movements/tools is screwed
down.
Standby pressure set too low.
Possible action
Check that the emergency stop or machine stop button are not
pressed by turning them clockwise.
Check power supply and ensure correct voltage.
Check that the mains voltage is compatible with the machine and
that the correct fuses are used.
Green symbol in the display indicates contact. If the symbol is red,
check that the battery for the remote control is charged and
correctly inserted. Ensure that the correct remote control is being
used. Check that the communication cable and aerial cable on the
machine are properly secured. Test run the machine using cable
control.
Check that the mains voltage is compatible with the machine and
that the correct fuses are used.
Contact your service agent.
Contact your service agent.
Stop the motor at once. Investigate and rectify any leaks there
might be. Replenish hydraulic fluid.
Check the diode on the valve cap at the bottom of valve block 1. If
the circulation valve is open the diode does not light up. Check the
cable to the control module.
Extend an unloaded cylinder to its end position and check the
pump pressure in the display. If you get maximum pressure the
pump regulator is OK.
Activate the remote control without operating any functions and
check the settings for stand-by pressure on the display. The
pressure should be 20 ± 1 bar.
Unscrew the knob(s).
Activate the remote control without operating any functions and
check the settings for stand-by pressure on the display. The
pressure should be 20 ± 1 bar.
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