Release the pressure from the piston
accumulator
◆
Release gas from the piston accumulator to
depressurise the piston accumulator or if the
value measured is above the required gas
pressure.
NOTICE Damage to the filling valve
Nails, screwdrivers or similar objects can damage
the filling valve.
►
Never use nails, a screwdriver or similar objects
to release nitrogen gas from the piston
accumulator.
◆
Push the hose end of the test pressure gauge
into the filling valve again.
This will cause gas to escape from the piston
accumulator.
◆
Repeat this until the required gas pressure has
been reached or until the piston accumulator is
depressurized.
◆
Install the threaded plug (A) in the filling
valve (G).
Filling/topping up the piston accumulator
WARNING Unexpected movement
If the working tool has got stuck, it might come
loose unexpectedly if the pressure in the piston
accumulator is increased. The unexpected impact
may lead to serious injury.
►
When filling the piston accumulator make sure
that there is nobody within the direct vicinity of
the working tool.
If a country-specific adapter (E) is required, it has
to be installed between the nitrogen bottle and the
pressure relief valve (D).
◆
Connect the pressure relief valve (D) to the
nitrogen bottle.
◆
Close the pressure relief valve (D).
◆
Connect the filling hose end (H) to the
minimess connection (C) of the pressure relief
valve (D).
◆
Open the valve of the nitrogen bottle (F).
◆
Remove the threaded plug (A) from the filling
valve (G).
◆
Push the free filling hose end (H) into the filling
valve (G).
◆
Slowly open the pressure relief valve (D) to let
the nitrogen flow into the piston accumulator.
◆
Read out the pressure increase from the
pressure gauge (B).
◆
Close the pressure relief valve (D) when the
piston accumulator has reached the required
pressure +10 %.
◆
Pull the filling hose out of the filling valve (G).
◆
Check the pressure in the piston accumulator
and let gas escape until the required gas
pressure has been reached.
◆
Install the threaded plug (A) in the filling
valve (G) and tighten it to the required
tightening torque (see chapter Bolt
connections / Tightening torques).
◆
Close the nitrogen bottle valve (F).
Safety and operating instructions HB 2000, 2000 DP, 2500, 2500 DP
52 © Construction Tools GmbH | 3390 5090 01 | 2016-05-23
Original instructions
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