Atlas Copco Dynapac F1800C, Operation & Maintenance Manual, Page: 196 / 318

D 40.18 34
Malfunction Cause Remedy
Hopper cannot be
swung open
Engine speed is too low Increase the speed
Hydraulic oil level is too low Top up oil
Leak in the suction line
Tighten the connections
Flow rate regulator
defective
Replace
Leaking seals of the
hydraulic cylinder
Replace
Control valve is defective Replace
Power supply interrupted
Check fuse and cables; replace
if necessary
Hoppers lowers
inadvertently
Control valve is defective Replace
Leaking seals of the
hydraulic cylinder
Replace
Screed cannot
be lifted
Oil pressure too low Increase the oil pressure
Leaking seal Replace
Screed relieving or charg-
ing is switched on Switch must be in the centre
position
Power supply interrupted
Check fuse and cables; replace
if necessary
Crossbeams cannot
be lifted or lowered
Switch on the remote con-
trol is set to "Auto"
Set the switch to "Manual"
Power supply interrupted
Check fuse and cables; replace
if necessary
Switch on the operating
panel defective
Replace
Excess pressure valve
defective
Replace
Flow rate regulator
defective
Replace
Seals defective Replace
Crossbeams lower
inadvertently
Control valves defective Replace
Pilot-controlled non-return
valves defective
Replace
Seals defective Replace