Corghi ERCO 500 Manuel D'utilisation page 74

Platforms do not stop in
standing position
The lift does not lower
smoothly
Lifting is not synchronized
The lift does not stop at safety
height
74
The lowering and locking
solenoid valves stay opened.
Leakage in the hydraulic
pipelines.
At least two hydraulic
cylinders are faulty
Presence of air in the hydraulic
system
Leakages or presences of air
into hydraulic circuit
The safety height limit switch
does not work
The maximum height limit
switch does not work
Verify that solenoid valve
sliders are not blocked
Check connections for proper
tightening and tubes for
damage (replace if damaged).
Check and replace if needed
Bleed the hydraulic system
Bleed the hydraulic system
Check the limit switch and
replace if needed
Check the limit switch and
replace if needed