RAVAGLIOLI RAV4351 SI Anleitung Seite 95

8. PROBLEMS
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
a)
No operation.
b)
c)
d)
a)
Up movement is
possible, but down
movement is
impossible.
b)
c)
d)
a)
The lift table can be
moved up, but not
down.
b)
c)
Down movement is a) Motor heat probe disabled.
possible, but up
movement is
impossible.
Lowering speed is very a)
b)
low.
a)
The motor turns
regularly but the lift
b)
does not rise, or rises
slowly.
c)
d)
The lift cannot lift the a)
nominal capacity.
b)
The release cylinders do a)
not work.
b)

CAUSES
Main switch set to "0".
Disconnected fuses.
Ropes loosening/breakage limit switch
tripped due to the breakage of a rope.
Ropes loosening/breakage limit switch
tripped due to the loosening of a rope.
Ropes loosening safety limit switch tripped
due to an obstacle under the platform, or
due to the loosening of a rope.
Down solenoid valve EV1 faulty.
Solenoid valve EV3 faulty (catches).
Limit switch FC5 faulty (dangerous height).
Solenoid valve EV2 faulty (pawls release).
Safety pressure switch tripped due to an
obstacle under the platform.
Safety pressure switch damaged.
The flow controlvalve does not work properly
Clogged pipe.
Descent solenoid valve jammed in open
position.
Pump intake filter clogged.
Piston gasket damaged or worn.
Pump worn or damaged .
Faulty calibration valve.
Pump worn or damaged.
Release solenoid valve does not work
properly.
Release cylinder gasket worn or damaged.
0706-M020-6
TECNICAL SERVICE REQUIRED
do not attempt to do the job yourself
a) Set switch to "1".
b) Change blown fuses. If a fuse is blown
again, find the cause leading to the
inconvenience.
c) Change the rope. Contact dealer's technical
service.
d) Adjust rope with the special nuts positioned
onto post upper side. Contact dealer's
technical service.
a) Check ropes adjustment. Press UP
pushbutton until all ropes are tensioned.
Eliminate loosening causes. Carry out the
down movement.
b) To let platform move down, work manual
downstroke valve with the special key. To
remove and carry out the maintenance
operations on the down solenoid valve, refer
to Section MAINTENANCE.
c) Check solenoid valve correct operation and,
if necessary, clean it (see Cleaning sub-
section). Check air pipe and electrical cable
connection.
d) Check for FC5 cable correct connection
(refer to the Wiring Diagram).
a) Check solenoid valve correct operation and,
if necessary, clean it (see Cleaning sub-
section). Check air pipe and electrical cable
connection.
b) Press the UP movement push-button until
platforms are in mechanical stop. Remove
the obstacle.
c) To complete the down movement,
disconnect the two cables of the pressure
switch positioned under the fixed platform
and connect them with one another, then
press the down movement push-button.
a) Wait for probe closing.
a) Clean the valve (see § Valve cleaning)
b) Clean piston valve.
a) Clean the solenoid valve (see § Valve
cleaning).
b) Clean the filter.
c) Replace the gasket.
d) Check pump for proper operation and
replace it if needed.
a) Request assistence from retailer's technical
service.
b) Check that the pump is working properly and
replace if necessary.
a) Check that the spool of the solenoid valve is
working and clean the solenoid valve.
b) Replace the gaskets.
REMEDIES
95