Repairs
56
Service manual
Replacing the hydraulic switch valve
All operating table models can be adjusted hydraulically.
They can be adjusted by means of either the foot pump
or the electro-hydraulic pump. The individual adjustment
functions are preselected by means of a hydraulic switch
valve. The hydraulic switch valve can be replaced.
Preparation
•
In order to replace the hydraulic switch valve, detach
the cladding panels of the height adjustment column.
You will find details under “Removing and re-attaching
the cladding panels” on page 11.
•
Lift off the claddings of the mobile base. You will find
details under “Removing and re-attaching the
cladding of the mobile base” on page 13.
•
Remove the floor pan. You will find details under
“Replacing or lowering the floor pan” on page 14.
Removing the hydraulic switch valve
The hydraulic switch valve is fixed to the frame of the
mobile base.
•
In order to remove the switch valve, lower the table-
top to minimum height.
•
Detach all hydraulic tubes including the pressure line
together with the hydraulic filter and the return hose.
Detach each of the hydraulic tubes directly at the
switch valve.
h
For RC models: Detach also the hydraulic hoses
from the magnetic valve on top of the
switchover valve.
•
Lift the detached hydraulic tubes of the RC models.
•
Lift the three batteries behind the hydraulic switch
valve together with the mounting panel out.
•
Loosen the fixing nut of the hydraulic switch valve by
means of a 32 mm open-end spanner.
Adjusting screw
Fastening screw
