TROUBLESHOOTING &
MAINTENANCE
CHECK POINTS PRIOR TO TROUBLESHOOTING
Oil Pressure
In order to check that the oil pressure into the machine is high enough, a gauge
may be applied to the oil pressure hose, for example on the quick coupler. The
pressure of the oil circulating through the machine when it is sitting idle should
be especially 30 Bar. When a cylinder, for example the Cut & Start is powered to
the end of stroke the oil pressure should rise to the relief valve pressure of 180
bar.
Oil Flow
The amount of oil that the tractor delivers should be minimum 30 liters/minute
for satisfactory operation of the machine, but it is recommended that it is 40
liters/minute.
Note: (Max. allowed oil amount is 80 liters/minute). Ensure that oil level in
tractor’s hydraulic system is correct and tractor’s oil filter is changed regularly.
REMEMBER! Large oil amount will mean that the Valves get hot.
Return Pressure
The return pressure can be too high. With high return pressure the machine’s
functions will get less power. High return pressure means also that you need
more power to operate the valves and the parking brake on the wrapping arms
will be less effective. MAX. ALLOWED RETURN PRESSURE IS 10 BAR. A “free
return” directly to the tank should be used.
High return pressure affects the operation of the control valves, the wrap arm
parking brake and motor seals. It also reduces the hydraulic pressure available
to operate the machine.
Electric Power
The controller requires 12-13.5V to operate at optimal performance. A poor
battery or bad wiring will result in the voltage dropping when the machine is
working. The controller displays a battery warning when voltage is low.
If the controller does not power up:
- Check the power to the tractor’s Euro socket.
- Check that fuse on the power cable to the machine, it is fitted with two 15Amp
fuses also the power cable to the controller also has two 15Amp fuses.
If the Voltage drops:
1. Check that the contacts are clean in the 3 pin power supply plug and socket
in the cab. This socket should have a minimum 15A fuse. There are two 15amp
fuses on the controller power cable near the plug.
2. If the voltage only drops on some function there may be damage on
multicore cable from the controller to the junction box.
PLEASE CONTACT YOUR DEALER IF YOU ARE IN DOUBT ABOUT ANYTHING.
(Remember always to give your dealer the serial number and production year
of your machine when contacting dealer and when ordering spare parts).
Procedure of Troubleshooting
If the machine fails to operate correctly it must be determined if the problem is
Hydraulic, Mechanical or Electrical. See the Table on the next page:
A100 EH Operator’s Manual
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