Epiroc MB Series User Manual

Safety and operating instructions
© Construction Tools GmbH | 3390 5201 01 | 2023-05-15
Original Instructions
45
7.10 Piston accumulator
The pressure in the piston accumulator is measured at
the filling valve(G). The piston accumulator is also filled
through this valve.
G
G
G
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 without ex-
erting pressure!
Type Minimum gas
pressure
Required gas
pressure
MB750 E 9.6 bar (139psi) 11.6 bar
(168psi)
MB1000 E 6.0 bar (87psi) 9.0 bar (131psi)
MB1200 E 11.0 bar
(160psi)
14.1 bar
(205psi)
MB1500 E 9.8 bar (142psi) 11.8 bar
(171psi)
MB1650 E 10.6 bar
(154psi)
12.6 bar
(183psi)

Epiroc MB Series Specifications

General

Brand	Epiroc
Model	MB Series
Category	Industrial Equipment
Language	English