Welger RP 202 CLASSIC Operating Manual page 29

Note: In order to find the correct oil coupling sleeves quickly
when hooking up the baler on later occasions, it is advisable to
transfer the colour identification used for the hydraulic hoses to
the couplings at the tractor end.
Clean the coupling parts of the hydraulic pipes with a clean cloth
and plug in to the sockets at the tractor.
Check hoses and pipelines regularly for damage,
deterioration and safe functioning. Defective parts are to be
replaced immediately by original WELGER replacement parts.
Hoses and hose lines are subject to natural deterioration even
under normal operating loads. As a result, the useful service life
is limited.
According to the "Safety Regulations for Hydraulic Hoses", a
service life of six years should not be exceeded!
WELGER RP 202 • RP 220 • RP 302 • RP 320 25