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8. PROBLEMS
Some possible problems which may arise while using the lift are listed below. Ravaglioli will not accept any responsibility for
damage to people, animals and objects caused by unauthorised staff using the equipment. In the event of faults, you are
advised to contact the technical service department in good time to receive advice about how to carry out work and/or
adjustments in maximum safety conditions, thus avoiding the risk of damage to people, animals and objects.
Turn the main switch to “0” and lock in case of emergency and/or maintenance to the lift
PROBLEM
Machine not working.
The main lift is not
working.
The integrated lift is not
working.
Machine carries out rise
manoeuvre but not
descent.
Descent is extremely
slow.
The motor turns but the
lift does not rise.
The motor turns but the
rise speed is extremely
slow.
Cannot lift nominal load
capacity.
Platforms not
synchronised.
Release cylinders not
working.
Safety pawl not working.
The main lift and lift table
elevate at the same time.
RAV520NI SI
All manuals and user guides at all-guides.com
CAUSE
Mains switch in “0” position
a)
b)
Transformer fuse or general protective
fuses broken.
Fault in electrical system
c)
a) Integrated lift platforms down.
a) Main lift platforms up.
Safety pressure switch activated due to
a)
obstruction beneath footboard.
b)
Safety pressure switch damaged or
command system working badly.
c)
Descent solenoid valve faulty.
d)
Interception solenoid valve faulty.
e)
Obstruction beneath footboard P1.
a) The capacity regulating valve is not
working properly.
a)
The solenoid descent valve is blocked in
the open position.
Suction pump filter blocked.
b)
a)
The solenoid descent valve is partially
open.
Suction pump filter partially blocked.
b)
Worn or damaged pump.
c)
d)
Manual descent valve partially open.
Calibrating valve faulty.
a)
b)
Worn or damaged pump.
Faulty alignment valve.
a)
Worn gaskets in hydraulic cylinders.
b)
Faulty solenoid release valve.
a)
b)
Worn or damaged release cylinder gasket.
a) Faulty release cylinder.
a) Interception valve does not work properly
TECHNICAL SERVICE STAFF REQUIRED
Turn to position “I”.
a)
b)
Replace used fuses. If a fuse goes again,
find the cause of the problem.
Check efficiency, components and
c)
connections (push buttons, solenoid
starter, heat detector, transformer).
a) Lift integrated lift platforms to a minimum
height of 210mm.
a) Completely lower main lift platforms
Press rise button until the footboards go
a)
into mechanical stop. Remove obstruction.
To complete descent, press descent button
b)
and fit pin A inside the control unit.
To lower the footboards, see section 6.1.
To lower the footboards, see section 6.1.
c)
Press the rise button until the footboards
d)
go into mechanical stop. Remove
e)
obstruction.
a) See “Maintenance” section.
a)
See “Maintenance” section.
Clean filter.
b)
a)
See section on “Maintenance”.
Clean filter.
b)
Replace pump.
c)
d)
Restore valve seal.
Request dealer assistance.
a)
b)
Check pump efficiency and replace if
necessary.
Check that tap R (fig.14) is closed. Clean
a)
valve if necessary and proceed as
described in section 4.12.
Replace.
b)
Check that the solenoid valve reel is
a)
working properly and clean the solenoid
valve.
b)
Replace gasket.
a) See above.
a) Clean or replace.
0579-M046-0
Intervention by others prohibited
SOLUTION
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