Ravaglioli RAV540U, Translation Of The Original Instructions

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59 59
0579-M090-0
8. PROBLEMS
TECNICAL SERVICE REQUIRED
do not attempt to do the job yourself
Some possible problems wich may arise while using the lift are listed below. The Manufacturer will not accept any
responsability for damage people, animals and objects caused by unautorized 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 abjects.
Turn the main switch to “0” and lock in case of emergency and/or maintenance to the lift.
FAULTS CAUSES REMEDIES
No operation. a)
b)
c)
Main switch set to “0”.
Transformer fuse or general protective
fuses broken.
Fault in electrical system a)
b)
c)
Set switch to “1”.
Replace used fuses. If a fuse goes again,
find the cause of the problem.
Check efficiency, components and
connections (push buttons, solenoid starter,
heat detector, transformer).
Machine carries out rise
manoeuvre but not
descent. a)
b) Descent solenoid valve faulty.
Command system working badly a)
b)
To lower the footboards, see section 6.1.
Check efficiency, components and
connections (push buttons, solenoid starter,
heat detector, transformer).
Descent is extremely
slow. a) The capacity regulating valve is not
working properly.
a) See “Maintenance” section.
The motor turns but the
lift does not rise. a)
b) The solenoid descent valve is blocked in the
open position.
Suction pump filter blocked. a)
b) See “Maintenance” section.
Clean filter.
The motor turns but the
rise speed is extremely
slow. a)
b)
c)
d) The solenoid descent valve is partially
open.
Suction pump filter partially blocked.
Worn or damaged pump.
Manual descent valve partially open. a)
b)
c)
d) See section on “Maintenance”.
Clean filter.
Replace pump.
Restore valve seal.
Cannot lift nominal load
capacity. a)
b) Calibrating valve faulty.
Worn or damaged pump. a)
b) Request dealer assistance.
Check pump efficiency and replace if
necessary.
Platforms not
synchronised. a)
b) Filling cocks open.
Worn gaskets in hydraulic cylinders. a)
b) Make sure filling cocks are closed.
Replace.
Release cylinders not
working. a)
b) Faulty solenoid release valve.
Worn or damaged release cylinder gasket. a)
b) Check that the solenoid valve reel is
working properly, connections and clean the
solenoid valve.
Replace gasket.
Safety pawl not
working. a) Faulty release cylinder. a) See above.
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