Safety and operating instructions
© Construction Tools GmbH | 33905146 01 | 2019-09-05
Original Instructions
55
7.10.2 Release the pressure from the
piston accumulator
n
Release gas from the piston accumulator to depres-
surise the piston accumulator or if the value mea-
sured is above the required gas pressure.
NOTICE Damage to the filling valve
Nails, screwdrivers or similar objects can damage the fill-
ing valve.
u Never use nails, a screwdriver or similar objects to
release nitrogen gas from the piston accumulator.
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Push the hose end of the test pressure gauge into
the filling valve again.
This will cause gas to escape from the piston accu-
mulator.
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Repeat this until the required gas pressure has been
reached or until the piston accumulator is depressur-
ized.
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Install the threaded plug(A) in the filling valve(G).
7.10.3 Filling / topping up the piston
accumulator
WARNING Unexpected movement
If the working tool has got stuck, it might come loose un-
expectedly if the pressure in the piston accumulator is in-
creased. The unexpected impact may lead to serious in-
jury.
u When filling the piston accumulator make sure that
there is nobody within the direct vicinity of the work-
ing tool.
If a country-specific adapter(E) is required, it has to be
installed between the nitrogen bottle and the pressure
relief valve(D).
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Connect the pressure relief valve(D) to the nitrogen
bottle.
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Close the pressure relief valve(D).
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Connect the filling hose end(H) to the minimess con-
nection(C) of the pressure relief valve(D).
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Open the valve of the nitrogen bottle(F).
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Remove the threaded plug(A) from the filling
valve(G).
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Push the free filling hose end(H) into the filling
valve(G).
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Slowly open the pressure relief valve(D) to let the ni-
trogen flow into the piston accumulator.
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Read out the pressure increase from the pressure
gauge(B).
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Close the pressure relief valve(D) when the piston
accumulator has reached the required pressure
+10%.
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Pull the filling hose out of the filling valve(G).
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Check the pressure in the piston accumulator and let
gas escape until the required gas pressure has been
reached.
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Install the threaded plug(A) in the filling valve(G)
and tighten it to the required tightening torque (see
chapter Bolt connections / Tightening torques).
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Close the nitrogen bottle valve (F).