Piston accumulator
The pressure in the piston accumulator is
measured at the filling valve (G). The piston
accumulator is also filled through this valve.
The following accessories can be supplied:
1 nitrogen filling device
1 test pressure gauge ¼", 0-25 bar, test category
1.6
1 nitrogen bottle
1 adapter, country-specific
To enable the following inspection and
maintenance activities to be carried out, the
equipment referred to above has to be directly
available at the location of use at all times.
Checking the pressure in the piston
accumulator
Check the gas pressure in the piston accumulator
monthly, and in cases of decreasing power or
failure of the hydraulic breaker. Do not top up the
piston accumulator unless the gas pressure is
equal to or less than the minimum gas pressure.
Check the pressure in the piston accumulator
when the hydraulic breaker is at operating
temperature (60-70 °C).
◆
Lay down the hydraulic breaker.
Do not apply pressure to the working tool.
◆
Remove the threaded plug (A) from the filling
valve »G«.
◆
Push the hose end of the test pressure
gauge (B) into the filling valve and note the
pressure.
◆
If the value measured is below the required gas
pressure add nitrogen into the piston
accumulator.
The required pressure in the piston accumulator is:
if operating temperature 60-70 °C and without
exerting pressure!
Type Minimum gas
pressure
Required gas
pressure
HB 2000,
HB 2000 DP
12.3 bar 14.8 bar
HB 2500,
HB 2500 DP
11.6 bar 15.1 bar
HB 2000, 2000 DP, 2500, 2500 DP Safety and operating instructions
© Construction Tools GmbH | 3390 5090 01 | 2016-05-23
Original instructions
51
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