Safety and operating instructions
54 © Construction Tools GmbH | 33905146 01 | 2019-09-05
Original Instructions
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 ac-
tivities to be carried out, the equipment referred to above
has to be directly available at the location of use at all
times.
7.10.1 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 accumu-
lator 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
(140–158°F).
n
Lay down the hydraulic breaker.
Do not apply pressure to the working tool.
n
Remove the threaded plug(A) from the filling valve
»G«.
n
Push the hose end of the test pressure gauge(B) into
the filling valve and note the pressure.
n
If the value measured is below the required gas pres-
sure add nitrogen into the piston accumulator.
The required pressure in the piston accumulator is:
if operating temperature 60-70°C and no contact
pressure to the working tool!
Type Minimum gas
pressure
Required gas
pressure
EC 140T 7.9bar (115 psi) 10.4bar (151 psi)
EC 150T 12.1 bar (175 psi) 14.6 bar (212 psi)
EC 155T 13.5 bar (196 psi) 16.0 bar (232 psi)
EC 165T 14.2 bar (206 psi) 16.7 bar (242 psi)
EC 180T 10.8 bar (157 psi) 13.3 bar (193 psi)
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