SERVICE
10
Special wrench for hydraulic couplings
INTRODUCTION
INSTRUCTIONS FOR INSTALLING FLEXIBLE HOSES AND FITTINGS
Inspection of pipes and fittings
When even just one of the following conditions arises the pipe must immediately be disconnected and
replaced:
•
a shift of the connector on the pipe;
•
the presence of damage, cuts or abrasions on the surface layer;
•
hardening or stiffness of the pipe, the presence of burns or cracks due to heat exposure;
•
the presence of cracks, damage or bad corrosion on the connector;
•
the presence of leaks along the pipe or at the connector;
•
the presence of permanent creases, compression, flattening or twists in the pipe;
•
the presence of blisters, softening, wear of the external coat.
Pre-installation inspection
Before installing a flexible hose it is necessary to inspect the pipes carefully. First check that the type, size,
reference code and length are correct, then check there is no debris, blockages, bubbles, peeling of the
outer layer or any other visible defects.
Installation
Avoid twisting the pipe, which could cause it to burst under pressure.
There must be an adequate radius of curvature to prevent constriction and collapse. The life of the assem-
bled pipe decreases considerably when below the minimum radius of curvature.
The pressure can cause changes in the length of the pipe, up to + 2%. It will be wise to have a slightly
greater length than the requirement in order to compensate for these changes.
Code:
4075291 (C8 - C10)
4075292 (C12)
4075293 (C16)
