Service and maintenance of machine
150
Verti-Mix 951-1651, Verti-Mix 951-L, 1251-L, Verti-Mix 1501 D-3101 D 05.16
9.15.2.3 Inspection criteria for hydraulic hose pipes
For your own safety:
Immediately have hydraulic hose pipes replaced (shop work) as soon as you detect
any of the following defects:
Damaged outer layer down to the liner (e. g. due to chafing points, cuts,
fissures).
Embrittled outer layer (visible by cracking of hose material).
Unnatural deformations of the hydraulic hose pipe in depressurized as well as in
pressurized state or when bent (e. g. separation of layers, blistering, pinches,
kinks).
Leaks.
Damaged, deformed or leaking fitting. Small surface damage is no reason for
replacement.
Hose slipping out of the fitting.
Corroded fitting which may affect the function and the strength.
Improperly laid hydraulic hose pipes, e. g. ignored bending radii, laying over
sharp edges.
The period of use of 6 years has been exceeded.
9.15.2.4 Installation and removal of hydraulic hose pipes
Shop work
When installing and removing hydraulic hose pipes, it is imperative to observe the
following information:
Only use hydraulic hose pipes of the manufacturer.
Ensure cleanliness.
Install hydraulic hose pipes such that the following applies to all operating
states:
There is no tensile stress, except for that due to the dead weight,
there is no upsetting stress in case of short lengths,
external mechanical influences on the hydraulic hose pipes are avoided.
Make sure to avoid chafing of hydraulic hose pipes against components or
against each other by suitable arrangement and fixing. Protect hydraulic
hose pipes by means of protective coatings if necessary. Cover sharp-
edged components.
the bending radii do not fall below the admissible limits.
When connecting a hydraulic hose pipe to moving parts, the hose length must
be such that:
in the complete range of motion the bending radius does not fall below the
minimum admissible limit,
the hydraulic hose pipe is not subject to tensile stress.
Fix the hydraulic hose pipes to the specified fixing points. Avoid additional hose
supports which affect the natural motion and length variation of the hose.
Overcoating of hydraulic hose pipes is not allowed.
