48
RCS Climbing Device and Hydraulics
Assembly Instructions
Part D Operations
D5 Remedial Measures for Malfunctions
D5.1 Overview
Malfunction
Cause
Remedial measure
Cylinder does
not extend
Climbing unit blocked
Retract all cylinders in order to lower the
climbing unit onto the climbing pawls.
Remove blockage.
Insufficient oil in the hydrau-
lic tank
Determine the cause of the hydraulic oil loss
and eliminate.
Top up hydraulic oil.
Polarity on the motor
swapped
Check rotary field display and, if necessary,
change with phase inverter, see D3.1.
Leakage in hydraulic system
Identify leakage point and seal; replace if
necessary.
Pawl does not
engage in the
shoe
Climbing pawl blocked
Remove blockage.
Pawl moves sluggishly or is
dirty
Clean the moving parts, functionality test.
Spring in climbing shoe is
broken
Release climbing pawl manually, see D5.5.
Replace climbing shoe.
Repairs carried out by PERI.
Cylinder does not extend far
enough
Synchronisation deviation
Carry out a reference run, see D5.3.
Cylinder does not
fall back in the
climbing rail or
does not engage
Locking lever in the cylinder
base does not completely
engage
Correctly place the cylinder base on the bolts
of the climbing shoe.
Spring in the cylinder base is
broken
Release climbing device manually, see D5.5.
Replace climbing device.
Repairs carried out by PERI.
Cylinder cannot completely
retract
Synchronisation deviation
Carry out a reference run, see D5.3.