Epiroc EC 40T User Manual

Safety and operating instructions
50 © Construction Tools GmbH | 3390 5203 01 | 2019-08-06
Original Instructions
7.11.1 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:
with an operating temperature 60–70°C (140–
158°F) and without exerting pressure!
Type Minimum gas
pressure
Required gas
pressure
HB3100,
HB3100DP
14.2bar
(206psi)
16.7bar
(242psi)
HB3600,
HB3600DP
11.5bar
(167psi)
14.0bar
(203psi)
HB4100,
HB4100DP
11.7bar
(170psi)
14.2bar
(206psi)
HB4700,
HB4700DP
10.5bar
(152psi)
13.0bar
(189psi)
7.11.2 Release the pressure from the
piston accumulator
n
Release gas from the piston accumulator to depres-
surise the piston accumulator or if the value mea-
sured is above the required gas pressure.
NOTICE Damage to the filling valve
Nails, screwdrivers or similar objects can damage the fill-
ing valve.
u Never use nails, a screwdriver or similar objects to
release nitrogen gas from the piston accumulator.
n
Push the hose end of the test pressure gauge into
the filling valve again.
This will cause gas to escape from the piston accu-
mulator.
n
Repeat this until the required gas pressure has been
reached or until the piston accumulator is depressur-
ized.
n
Install the threaded plug(A) in the filling valve(G).
7.11.3 Filling / topping up the piston
accumulator
WARNING Unexpected movement
If the working tool has got stuck, it might come loose un-
expectedly if the pressure in the piston accumulator is in-
creased. The unexpected impact may lead to serious in-
jury.
u When filling the piston accumulator make sure that
there is nobody within the direct vicinity of the work-
ing tool.
If a country-specific adapter(E) is required, it has to be
installed between the nitrogen bottle and the pressure
relief valve(D).
n
Connect the pressure relief valve(D) to the nitrogen
bottle.

Epiroc EC 40T Specifications

General

Brand	Epiroc
Model	EC 40T
Category	Industrial Equipment
Language	English