53
RAV505 - RAV506 - RAV507
RAV508 - RAV509 - RAV510
0580-M020-0
TECHNICAL SERVICE REQUIRED
do not attempt to do the job yourself
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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
PROBLEMS
CAUSES
RIMEDI
Lift does not work at all.
a)
b)
c)
Main switch in "0" position
Transformer fuse or general protection
fuses interrupted (installed by the user).
Fault in the electric system.
a)
b)
c)
Turn switch to position "I".
Replace the interrupted fuses. If it breaks
again, identify the cause.
Check efficiency, connections and
components (buttons, remote control,
heat detector, transformer).
The rise movement
takes place but not the
descent movement
a)
b)
c)
The safety pressure gauge is activated
because of presence of obstacle under
the footboard.
Safety pressure gauge damaged or
malfunction of the control system
Defect in the descent solenoid valve.
a)
b)
c)
Press the rise button until the footboards
go into mechanical stop. Remove the
obstacle.
To complete the descent press the
descent button insert the pin A inside the
control unit.
To lower the footboards, operate the
manual descent valve using the relative
spanner. For dismantling and
maintenance operations, see the section
"Maintenance".
Descent is extremely
slow
a)
The capacity adjusting valve does not
work properly
a)
See "Maintenance" section.
The motor turns over
regularly but lifting does
not take place.
a)
b)
Descent control valve blocked in opening
position.
Pump suction filter blocked
a)
b)
See "Maintenance" section.
Clean the filter
The motor turns over
regularly but the rise
speed is extremely slow.
a)
b)
c)
d)
Descent solenoid valve partially open.
Pump suction filter partially blocked.
Pump worn or damaged.
Manual descent valve partially open.
a)
b)
c)
d)
See "Maintenance" section.
Clean the filter.
Replace the pump.
Reseal the valve.
The lift cannot lift the
nominal capacity
a)
b)
Faulty alignment valve.
Pump worn or damaged.
a)
b)
Request assistance from retailer's
technical service.
Check that the pump is working properly
and replace if necessary.
Non-syncronized
movement of the
footboards.
a)
b)
Faulty alignment valve.
Worn gaskets in hydraulic cylinders.
a)
b)
Check that the tap R (Fig.10) is closed.
Clean the valve if necessary and
proceed as described in section 4.9.
Replace the gaskets.
The release cylinders do
not work.
a)
b)
Release solenoid valve does not work
properly.
Release cylinder gasket worn or
damaged.
a)
b)
Check that the spool of the solenoid
valve is working properly and clean the
solenoid valve.
Replace the gaskets
There are problems in
sliding between the
front ramp and
(RAV510).
a)
b)
Footboard guides and ramp control lever
not greased.
Pressure gauge or adjustment screws
not adjusted
a)
b)
Clean or replace.
Adjust.
