RAV 640.2 SI SWA Manual Del Usuario página 61

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
Lift does not work at all.
The lift elevates but does not drop.
Descent is extremely slow
The motor turns over regularly but
lifting does not take place.
The motor turns over regularly but
the rise speed is extremely slow.
The lift cannot lift the nominal
capacity
Non-synchronized platform
movement.
The release cylinders do not work.
The main lift and lift table elevate at
the same time.
RAV640.2 SI SWA_RAV640.2 ISI SWA
RAV640.2 SI SWA VW_RAV640.2 ISI SWA VW
CAUSES
a) Main switch in "0" position
Transformer fuse or general protection fuses
b)
interrupted (installed by the user).
c) Fault in the electric system.
a) The safety pressure gauge is engaged due to
obstacles under the platform.
Safety pressure gauge damaged or malfunction of
b)
the control system.
c) Defect in the descent solenoid valve.
Fault in interception solenoid valve
d)
e) Descent control valve blocked.
The capacity adjusting valve does not work properly.
a)
a) Descent control valve blocked in opening position.
Pump suction filter blocked.
b)
a) Descent solenoid valve partially open.
Pump suction filter partially blocked.
b)
Pump worn or damaged.
c)
Faulty calibration valve.
a)
b) Pump worn or damaged.
Faulty alignment valve.
a)
Worn gaskets in hydraulic cylinders.
b)
a) Release solenoid valve does not work properly.
b) Release cylinder gasket worn or damaged.
a) Interception valve does not work properly
0587-M003-0
TECHNICAL SERVICE REQUIRED
do not attempt to do the job yourself
REMEDIES
a) Turn switch to position "I".
Replace the interrupted fuses. If it breaks again,
b)
identify the cause.
c) Check efficiency, connections and components
(buttons, remote control, heat detector, transformer).
a) Press the up button until the platforms reach
mechanical stop. Remove the obstacles.
To complete the descent press the descent button
b)
insert the pin A inside the control unit.
c) To lower the platforms, proceed as in section 6.
To lower the platforms, proceed as in section 6.
d)
e) Dismantle and clean.
See "Maintenance" section.
a)
a) See "Maintenance" section.
Clean the filter
b)
a) See "Maintenance" section.
Clean the filter.
b)
Replace the pump.
c)
Request assistance from retailer's technical service.
a)
b) Check that the pump is working properly and replace
if necessary.
Check that the tap R (Fig.16) is closed. Clean the
a)
valve if necessary and proceed as described in
section 4.9.
Replace the gaskets.
b)
a) Check that the spool of the solenoid valve is working
properly and clean the solenoid valve.
b) Replace the gaskets.
a) Clean or replace.
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