stertil-KONI ST 1055, Installation, Operation & Service Manual, Page: 31 / 50

26
FAULT POSSIBLE CASE REMEDY
The cylinder seal is damaged, oil
leaks continually. Have seals or cylinder replaced by service department.
Leaks in the oil line couplings. Tighten couplings and coupling nuts.
Dirty or damaged non-return
valve. Clean the filter and the ball behind the filter.
Column lowers by
itself.
Dirty or damaged lowering or
correction valve. Clean or replace valve.
Oil level in tank too low. Add oil as necessary, refer to lubricating instructions on
lifting column.
Pump drawing-in air. Tighten the suction filter fastening or crimp tighter.
The steel plug has not been
replaced by the breather cap Install the breather cap
Column does not lift
properly.
Breather cap blocked. Clean breather cap.
Columns lift at
different heights.
Control system not working
correctly. Use internal switches S3 and S4. S3 lifts the column and S4
lowers the column. Operate the switches until the columns
are synchronised. If the fault occurs again, contact the
Service Department.
Lifting system may not be set up
correctly. Follow the procedures in sections 6.1 and 6.2 of this
manual. If the fault occurs again, contact the Service
Department.
LED defective. Contact the service department.
Blown fuse. Check the fuses F1, F2 and F3.
If necessary, replace the fuse(s) in the control box. If fault
occurs again, contact the Service Department.
Main switch OFF. Set main switch ON.
Broken cable or loose connector. Check cable and and connector.
The emergency stop button has
not been unblocked. Release the button. Set the main switch to OFF and ON.
Press the "SET REF" button twice to make the system ready
for operation again.
No control power
(control power
indicator is OFF,
mains power
indicator is ON).
The thermal relay in the main
switch box has been
disconnected. Reset the thermal relay. If the defect occurs again, contact
the Service Department.