87
0716-M001-2-P1
8. PROBLEMS
TECNICAL SERVICE REQUIRED
do not attempt to do the job yourself
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 CAUSES
REMEDIES
No operation.
a)
b)
c)
d)
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.
a)
b)
c)
d)
Set switch to “1”.
Change blown fuses. If a fuse is blown
again, find the cause leading to the
inconvenience.
Change the rope. Contact dealer's technical
service.
Adjust rope with the special nuts positioned
onto post upper side. Contact dealer's
technical service.
Up movement is
possible, but down
movement is
impossible.
a)
b)
c)
d)
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).
a)
b)
c)
d)
Check ropes adjustment. Press UP
pushbutton until all ropes are tensioned.
Eliminate loosening causes. Carry out the
down movement.
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.
Check solenoid valve correct operation and,
if necessary, clean it (see Cleaning sub-
section). Check air pipe and electrical cable
connection.
Check for FC5 cable correct connection
(refer to the Wiring Diagram).
Down movement is
possible, but up
movement is
impossible.
a) Motor heat probe disabled.
a) Wait for probe closing.
Lowering speed is very
low.
a)
b)
The flow controlvalve does not work properly
Clogged pipe.
a)
b)
Clean the valve (see § Valve cleaning)
Clean piston valve.
The motor turns
regularly but the lift
does not rise, or rises
slowly.
a)
b)
c)
d)
Descent solenoid valve jammed in open
position.
Pump intake filter clogged.
Piston gasket damaged or worn.
Pump worn or damaged .
a)
b)
c)
d)
Clean the solenoid valve (see § Valve
cleaning).
Clean the filter.
Replace the gasket.
Check pump for proper operation and
replace it if needed.
The lift cannot lift the
nominal capacity.
a)
b)
Faulty calibration valve.
Pump worn or damaged.
a)
b)
Request assistence from retailer's technical
service.
Check that the pump is working properly and
replace if necessary.
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 and clean the solenoid valve.
Replace the gaskets.
Summary of Contents for SQ 300
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