Accumulators - New Holland W50 Workshop Manual

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NEVER REMOVE LEAD SEALS
Never change the rated pressure of
pressure-reducing valves without
the explicit authorization of the
Service department.
Never remove lead seals from pres-
sure-reducing valves and accumula-
tors.
AFTER REPAIR WORK
To prevent corrosion, coat all bright
metal machine components with a
grease film.
On completing the work, reassemble
all protective devices, covers, and
sound- and vibration-insulation ma-
terial.
Never start up the driving motor
while work is being done on the ma-
chine.
Check the repaired components and
all machine functions with a trial run.
Never release the machine for re-
commissioning until it is fully func-
tioning.
Carefully read personal and machine SAFETY INSTRUCTIONS (at the beginning of this manual)
SAFETY INSTRUCTIONS

ACCUMULATORS

Safety Instructions
W50 - W60 - W70 - W80
Accumulators are installed in the hy-
draulic system. These accumulators
contain nitrogen under high initial
pressure.
Even when the hydraulic pressure in
the system is reduced, the nitrogen
remains in the accumulator.
The accumulators are completely
safe in operation. If incorrectly han-
dled, however, there is a risk of ex-
plosion.
Therefore:
- Never handle accumulators me-
chanically, never weld or solder
them.
- Testing and servicing work must be
carried out by experts only.
- Prior to any testing and servicing
work, depressurize the hydraulic
part of the system.
- To dismantle the accumulator, al-
ways wear eye protection and
working gloves.
- Fill accumulators with nitrogen
only, never with compressed air or
oxygen.
- Report any defects or damage to
the machine owner without delay.
- Prior to recommissioning, an in-
spection by a specialist or expert is
essential if the accumulator has
been damaged or if the admissible
operating temperature or operating
pressure has been exceeded.
Never remove or paint over warning
and information plates, rating plates
or type identification markings. Re-
place illegible or damaged plates im-
mediately.