Corghi ERCO 500, Operator'S Manual, Page: 73 / 184

7 3
Electrical system

a check of the electrical system to verify that
control desk motor, limit switches and control
panel operate properly must be carried out by
skilled electricians

10 CHAPTER 10 - TROUBLESHOOTING
A list of possible troubles and solutions is given below
T
ROUBLE
: P
OSSIBLE
C
AUSE
: S
OLUTION
:
The lift does not work The main switch is not turned
on Turn the switch on
There is no power Check Power on to restore if
necessary
The electrical wires are
disconnected Replace
Fuses are blown Replace
Printed circuit board does not
operate properly Replace the printed circuit
board
The lift does not raise The motor direction of rotation
is not correct. Interchange the two phases on
the main switch
The oil in the hydraulic unit is
not sufficient. Add some hydraulic oil
The UP button is faulty. Check UP button and
connection for proper
operation. Replace, if needed
The lowering valve does not
close. Check and clean, if dirty, or
replace, if faulty
The suction pump filter is
dirty. Check and clean if needed.
The pump is faulty Check the pump and replace, if
needed.
The lifting capacity is not
sufficient Oil leakages in hydraulic
circuit Check the circuit for any
leakage
Exceeding oil into hydraulic
circuit Push lowering button and
discharging button
simultaneously
The lift does not lower when
the DOWN button is pressed (
without load) The lowering solenoid valve
does not work properly Verify if it is powered and
check magneto for damage
(replace if disconnected or
blown).
The lift does not lower when
the DOWN button is pressed Locking solenoid valve is
jammed Verify if it is powered and
check magneto for damage
(replace if disconnected or
blown)
The DOWN button is faulty Replace the DOWN button
Printed circuit board does not
operate properly Replace the printed circuit
board