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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
Lift will not work
Lift will rise but will not
lower
Descent is extremely
slow.
The motor runs but the lift
does not rise.
The motor runs but the
rise speed is extremely
slow.
Performance under rated
load capacity.
Platforms not
synchronised.
Release cylinders not
working.
RAV630.1 - RAV630.1 I
RAV630.2 - RAV630.2 I
CAUSE
Main switch in “0” position
a)
b)
Transformer fuse or main protection fuses
blown.
c)
Fault in electrical system
a)
Safety pressure switch activated due to
obstruction beneath platform.
Safety pressure switch damaged or
b)
command system working badly or control
system malfunctioning.
c)
Descent solenoid valve faulty.
Obstruction beneath platform P1.
d)
a) The flow control valve is not working
properly.
The solenoid descent valve is blocked in
a)
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)
Worn or damaged pump.
b)
a)
Faulty alignment valve.
Worn gaskets in hydraulic cylinders.
b)
Faulty solenoid release valve.
a)
b)
Worn or damaged release cylinder gasket.
TECHNICAL SERVICE STAFF REQUIRED
Turn to position “I”.
a)
b)
Replace any blown fuses. If a fuse blows
again, find the cause of the problem.
c)
Check efficiency, components and
connections (push buttons, solenoid
starter, heat detector, transformer).
a)
Press rise button until the platform catches
engage. Remove obstruction.
To complete descent, press descent button
b)
and fit pin A inside the control unit.
c)
To lower the platforms, see section 6.1.
Press rise button until the platform catches
d)
engage. Remove obstruction..
a) See “Maintenance” section.
See “Maintenance” section.
a)
Clean filter.
b)
a)
See section on “Maintenance”.
Clean filter.
b)
Replace pump.
c)
d)
Restore valve sealing.
Request dealer assistance.
a)
Check pump efficiency and replace if
b)
necessary.
a)
Check that tap R (fig.20) is closed. Clean
valve if necessary and proceed as
described in section 4.9.
Replace.
b)
Check that the solenoid valve coil is
a)
working properly and clean the solenoid
valve.
b)
Replace gasket.
0589-M001-0
Intervention by others prohibited
SOLUTION
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