15
12 Repairs
12.1 General
Servicing should only be carried out by the manufacturer of by staff trained by the
manufacturer and by authorised LUKAS dealers.
Only components, which are available as original LUKAS spare parts, may be
exchanged, because possibly there must be observed necessary special tools,
assembly instructions, safety aspects or tests. Therefore use only original LUKAS
spare parts.
Overpressure safety of the cutters (when not connected)
Undesired pressure could be charged in the device as a result of incorrect connections
and temperature increases. Therefore the blue return hose has a safety coupling (quick
connect plug, coloured yellow). Undesired overpressure (approx. 1.5 MPa) is
automatically released via this plug: oil escapes as well, this is not a malefunction.
If foreign couplings are used, which do not have this function, an overpressure safety
element (opens at 30 MPa) in the cutter valve will take care for pressure equalization.
Oil escapes in the area of the star grip. After the pressure has decreased, the valve is
leak-proof again.
If the valve is permanently leaking, the device must be checked by LUKAS.
12.2 Preventative service
12.2.1 Routine checks
The torque of the central bolt must be checked regularly.
For torques, see the chapter „Technical data“.
Damaged blades can be maintained by sharpening to a total of
0.5 mm
. Please ensure
that the internal cutting edges are coplanar.
The central bolt must be lubricated once a day with LUKAS special grease.
The lubrication nipple (A) is directly in the
central bolt on the side of the self-locking
nut (B).
Lubricate the cutter with a grease gun with
LUKAS special grease as shown in the
picture right.
Excess grease on the lubrication nipple
(see left) after lubrication should be removed
and disposed of professional.
A
B
