CTE ZED 23.2 JH, Use And Maintenance Manual, Page: 48 / 56

Use and maintenance manual
ZED 23.2 JH
Code n°UM0260_GB
46
5.11 Troubleshooting
DIAGNOSTICS
N.B. The solutions with (*) must only be carried out at
Authorised Workshops
Problem Cause Solution
Noisy pump
◊
Hydraulic oil viscosity too
high.
◊
Hydraulic oil level too low in
the tank.
◊
Intake pipe blocked or
crushed.
◊
The flanges on the intake lets
air in.
Use recommended
hydraulic oil
Top-up with hydraulic oil of
the same type.
(*) Check the integrity of
the pipe.
(*) Check sealing and
replace the gasket.
Slow functioning
of some
hydraulic
operations of the
machine. ◊
The maximum pressure valve
on the distributor inherent the
section of the circuit with
malfunctioning is not correctly
calibrated or its cut-off is
open due to presence of
impurities.
◊
Pump worn.
(*) Re-calibrate the valve.
Remove it and clean it and
then re-mount it with new
metal gaskets. Replace the
valve.
(*) Replace the pump
Irregular
functioning of
the hydraulic
cylinder.
◊
Oil seeps between the two
chambers of the cylinder and
consequently does not
sustain the load.
◊
Piston/rod connection
loosened.
◊
Max. pressure valve on the
distributor jammed or worn.
(*) Replace the jack
gaskets.
Check the piston/rod
connection.
(*) Remove and clean the
max pressure valve or
replace it.
Indicators do not
work
◊
Bulb burned
◊
Electric connection cut-off
◊
Fuse burned.
Replace the bulb.
(*) Restore the connection
Replace the fuse.
Hydraulic oil
excessive
heating.
◊
Hydraulic oil level too low in
the tank. Top-up with hydraulic oil of
the same type.
Solenoid valves
do not work ◊
No voltage
◊
Cursor does not move
◊
The coil does not work
(*) Check the electric plant
(*) Replace the solenoid
valve
(*) Replace the coil
!
NOTE:
for anything not described in the table, contact the After-sales Centre.