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Malfunction
Hoppers lowers
inadvertently
Screed cannot be
lifted
Crossbeams cannot
be lifted or lowered
Crossbeams lower
inadvertently
Cause
Control valve is defective
Leaking seals of the
hydraulic cylinder
Oil pressure too low
Leaking seal
Screed relieving or charg-
ing is switched on
Power supply interrupted
Switch on the remote con-
trol is set to "Auto"
Power supply interrupted
Switch on the operating
panel defective
Excess pressure valve
defective
Flow rate regulator defec-
tive
Seals defective
Control valves defective
Pilot-controlled non-return
valves defective
Seals defective
Remedy
Replace
Replace
Increase the oil pressure
Replace
Switch must be in the centre
position
Check fuse and cables;
replace if necessary
Set the switch to "Manual"
Check fuse and cables;
replace if necessary
Replace
Replace
Replace
Replace
Replace
Replace
Replace
D 42 51
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