B) Hydraulic Protection - UNIA HARRIER Operating And Maintenance Manual

b) hydraulic protection

WARNING! THE HYDRAULIC SYSTEM IS UNDER
Never manipulate the gas supply valve!
Inspection and maintenance of the pressure accumulator may only be carried out by a
qualified service. Any interference with the pressure accumulator results in a loss of
warranty.
Never disconnect any hydraulic connections when the system is pressurized!
The diaphragm accumulator is filled with nitrogen. The maximum filling pressure is
indicated on the label attached to the accumulator housing
In order to pressurize the hydraulic system to the required working pressure and to bleed
it:
•
clean the hydraulic connections
•
connect the hose [A] to the tractor
•
open the valves [B] and [E]
•
pressurize the machine hydraulic system to the desired working pressure, controlling the
flow with the controller [C], while observing the pressure gauge [D],
•
in order to bleed the hydraulic system, lower the machine to the ground, move forward,
OPERATING AND MAINTENANCE MANUAL HARRIER
PRESSURE!
Fig 10. Hydraulic protection – HARRIER H
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