Trouble-Shooting - stertil-KONI ST 1055 Installation, Operation & Service Manual

8.2

TROUBLE-SHOOTING

LED
INDICATION
Potentiometer Fault
Communication Fault
Hardware fault in the
communication circuit.
A defect in the control system
defect in the 24V outputs
Since the last zero setting of the
system, height differences of over
2 1/2" have occurred during
operation.
A difference of 2 3/4" or over has
occurred during standstill.
Emergency stop
Phase Check Fault
Fault in the unlocking solenoid
circuit
Fault in lowering valve circuit
Fault in adjusting valve circuit
POSSIBLE FAULT
Check the wiring to the potentiometer.
Turn power OFF then ON, push twice on the "SET REF" button.
If the fault occurs again, contact the Stertil B.V. Service
Department.
Check the connecting cables between the boxes. Connect one
auxiliary box to the main box using - preferably - new cables.
Start the system according to the standard procedure. Continue
extending the system by one auxiliary box until the defective
cable or box has been traced. If necessary, replace the
connecting cable or have the control PC replaced by the service
department.
Check if all wires in the box and of the communicationcable are
connected. If the fault occurs again, contact the
Stertil B.V. Service Department
Set the main switch to OFF and then again to ON and press the
"SET REF" button twice. If the defect occurs again, contact the
service department.
Set the main switch to OFF.
Check and if necessary replace fuse F2 (3, 15 A). Also check
and if necessary reset the thermal relay. Turn the switchbox on
again according to normal procedure. When this defect occurs
repeatedly contact the service department.
Check the hydraulic system for leaks.
Check whether the load per lifting column is higher than
10,000/12,000/16,000 lbs. Set the main switch to OFF and then
again to ON , press the "SET REF" button twice to make the
system ready for operation again. When the defect occurs again,
contact the service department.
Check whether the hydraulic system leaks.
Set the main switch to OFF and then again to ON , press the
"SET UP" button twice to make the system ready for operation
again. When the defect occurs again, contact the service
department.
Check the emergency stop switches and release them if
necessary. Set the main switch to OFF and ON. Press the "SET
REF" button twice to get the system ready for operation again.,
Switch power OFF. Check the fuses in main power supply.
Switch the power ON again.
If the fault occurs again (when the system is used for the first
time or when using a new wall supply socket) switch two phase
wires in the power plug and start the system again.
Set the main switch to OFF.
Check the wiring and coil for short-circuits and breaks and
repair where necessary. Set the main switch to ON. Press the
"SET REF" button twice to get the system ready for operation
again. If necessary contact the service department.
24
REMEDY