INSTRUCTION, USE AND
MAINTENANCE MANUAL
GB
Page 35 of 68
Problem
Possible cause
Remedy
When a control device is operated
the machine does not move at all.
a)
Solenoid valve not receiving
power.
b)
Solenoid valve jammed.
c)
Transformer fuse blown.
d)
Control unit not set correctly.
a)
Call the after-sales
service.
b)
Call the after-sales
service.
c)
Change the fuse.
d)
Call the after-sales
service.
No pressure in hydraulic circuit.
a)
Power unit motor turning in
wrong direction.
b)
Power unit pump is broken.
c)
No oil in power unit tank
a)
Restore correct ro-
tation direction by
changing socket con-
nection.
b)
Call the after-sales
service.
c)
Fill power unit tank
with oil
Machine operates in jerks.
a)
Not enough fluid in power unit
tank.
b)
Control unit switch has failed.
a)
Top up with oil.
b)
Call the after-sales
service.
7503-M002-6_B
NAV26HW - NAV26HW.S - NAV26HW.ST
