Ravaglioli RAV4405 E Manual Del Usuario página 65

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
No operation. a)
b)
c)
d)
Up movement is a)
possible, but down
movement is
impossible.
b)
c)
d)
a)
Down movement is
possible, but up
movement is
impossible.
a)
Lowering speed is
very low.
b)
The motor turns a)
regularly but the lift
b)
does not rise, or
rises slowly. c)
d)
a)
The lift cannot lift
the nominal
capacity. b)
The release a)
cylinders do not
work.
b)
do not attempt to do the job yourself
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).
Motor heat probe disabled.
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.
0716-M001-0
TECNICAL SERVICE REQUIRED
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 push-
button 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) Wait for probe closing.
a) Clean the valve (see § 7.4)
b) Clean piston valve.
a) Clean the solenoid valve (see § 7.4).
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
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