Ravaglioli RAV630.1 SI Manual page 59

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 will not work
Lift will rise but will not
lower
Descent is extremely
slow
The motor runs but the
lift will not rise
The motor runs regularly
but the rise speed is
extremely slow.
Performance under rated
load capacity
Movement of platforms
not synchronized
The release cylinders do
not work.
Main lift and free wheel
jacks rise together
RAV630.1 SI - RAV630.1 ISI
RAV630.2 SI - RAV630.2 ISI
CAUSES
Main switch in "0" position
a)
Transformer fuse or main protection
b)
fuses blown.
Fault in the electric system.
c)
a) The safety pressure gauge is activated
because of presence of obstacle under
the platform.
b) Safety pressure gauge damaged or
malfunction of the control system.
c) Defect in the descent solenoid valve.
Fault in cut-off solenoid valve
d)
Descent control valve blocked.
e)
The flow control valve is not working
a)
properly.
Descent control valve blocked in opening
a)
position.
b) Pump suction filter blocked
Descent solenoid valve partially open.
a)
Pump suction filter partially blocked.
b)
Pump worn or damaged.
c)
d) Manual descent valve partially open.
a) Faulty alignment valve.
b) Pump worn or damaged.
Faulty alignment valve.
a)
b) Worn gaskets in hydraulic cylinders.
Release solenoid valve does not work
a)
properly.
b) Release cylinder gasket worn or
damaged.
a) Cut-off valve does not work properly
Turn switch to position "I".
a)
Replace any blown fuses. If a fuse blows
b)
again, identify the cause.
Check efficiency, connections and
c)
components (buttons, solenoid starter,
heat detector, transformer).
a) Press the rise button until the platform
catches engage. Remove the obstacle.
b) To complete the descent press the
descent button and 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
d)
section 6.
Dismantle and clean.
e)
See "Maintenance" section.
a)
See "Maintenance" section.
a)
b) Clean the filter
See "Maintenance" section.
a)
Clean the filter.
b)
Replace the pump.
c)
d) Restore valve sealing.
a) Request assistance from retailer's
technical service.
b) Check that the pump is working properly
and replace if necessary.
Check that the tap R (Fig.18) is closed.
a)
Clean the valve if necessary and proceed
as described in section 4.9.
b) Replace the gaskets.
Check that the coil of the solenoid valve
a)
is working properly and clean the
solenoid valve.
b) Replace the gaskets
a) Clean or replace
0590-M001-0
TECHNICAL SERVICE REQUIRED
do not attempt to do the job yourself
REMEDIES
8
59