Safety and operating instructions
© Construction Tools GmbH | 3390 5203 01 | 2019-08-06
Original Instructions
51
n
Close the pressure relief valve(D).
n
Connect the filling hose end(H) to the minimess con-
nection(C) of the pressure relief valve(D).
n
Open the valve of the nitrogen bottle(F).
n
Remove the threaded plug(A) from the filling
valve(G).
n
Push the free filling hose end(H) into the filling
valve(G).
n
Slowly open the pressure relief valve(D) to let the ni-
trogen flow into the piston accumulator.
n
Read out the pressure increase from the pressure
gauge(B).
n
Close the pressure relief valve(D) when the piston
accumulator has reached the required pressure
+10%.
n
Pull the filling hose out of the filling valve(G).
n
Check the pressure in the piston accumulator and let
gas escape until the required gas pressure has been
reached.
n
Install the threaded plug(A) in the filling valve(G)
and tighten it to the required tightening torque (see
chapter Bolt connections / Tightening torques).
n
Close the nitrogen bottle valve (F).
7.12 HP-accumulator
Accumulators are pressure containers in the context of
the European Pressure Equipment Directive 2014/68/
EU.
As safety−related components, high pressure accumula-
tors are subject to special safety regulations.
Overhauling high pressure accumulators is only permit-
ted if carried out by professionals. Professionals are
people who are authorised to overhaul high pressure ac-
cumulators according to national regulations.
Contact the Epiroc Customer Center / Dealer in your
area for a professional.
A. Lower shell
B. Upper shell
C. Fastening screws
D. Connecting screws
WARNING Component coming loose abruptly
The HP-accumulator is under pressure, even when the
hydraulic system has been depressurised. Screw con-
nections and parts of the HP-accumulator might come
loose abruptly and cause injuries.
u Never unscrew the cover or the upper shell from a
pressurised HP-accumulator.
u Have the HP-accumulator checked in accordance
with the national / regional safety provisions.
7.12.1 Visual check
Once a week carry out a visual check of the HP-accumu-
lator.
In case of damages, safe, trouble-free operation is en-
sured only if the complete HP-accumulator is replaced.