Safety and operating instructions
© Construction Tools PC AB | 3390 5211 01 | 2020-09-18
Original Instructions
33
7.2 Depressurising the hydraulic
system
Even when you have switched off the carrier, a consider-
able residual pressure can still be present in the hy-
draulic system.
A residual pressure can still be present in the hydraulic
attachment even after you have disconnected the quick-
release couplings or closed the shut-off valves.
The hydraulic attachment can only be depressurized us-
ing the hydraulic system of the carrier, by allowing hy-
draulic oil to drain to the tank via the return connection.
Depending on the type of hydraulic attachment, the inter-
nal leaks, the oil temperature, the type of hydraulic oil
and the design of the hydraulic installation of the carrier,
the time required to relieve the pressure can vary.
Observe the following steps in order to depressurise the
hydraulic attachment:
1. Ensure that the hydraulic oil in the hydraulic attach-
ment and in the carrier has a temperature of at least
0 °C (32 °F). If necessary, pre-heat it to at least 0 °C
(32 °F).
2. The hydraulic attachment must be connected to the
hydraulic system of the carrier device, i.e. the hy-
draulic hoses must be connected up and the respec-
tive shut-off valves in the supply pipe and in the con-
nection to the tank must be opened.
3. Place the hydraulic attachment on timber support
blocks laying on the ground.
4. Depressurise the hydraulic system according to the
manufacturer's safety and operating instructions for
the carrier.
5. You must wait at least another 60 minutes until the
pressure has been relieved through leakages.
6. When you have made sure that no more pressure is
present in the hydraulic system, you must disconnect
the hydraulic connection to the carrier. Close the
shut-off valves or disconnect the quick-release cou-
plings, so that no hydraulic oil can flow back from the
carrier.
7.3 Cleaning
n
Clean the hydraulic compactor if dirt adhering to the
tool impedes visual checks of the parts (hoses, rub-
ber isolators etc.).
NOTICE
Environmental damage due to polluted water
Hydraulic oil and cutter grease are environmentally
harmful and must not penetrate the ground or enter the
water table or water supplies.
u
Collect the water used for cleaning if it has been con-
taminated by hydraulic oil and cutter grease.
u
Dispose of the water in accordance with the applica-
ble regulations to avoid environmental hazards.
7.3.1 Preparations
Hydraulic compactor attached:
n
Deposit the hydraulic compactor on level ground.
n
Secure the carrier such that it cannot move unexpect-
edly.
Hydraulic compactor not attached:
n
Plug up all hydraulic ports.
7.3.2 Procedure
n
Use a pressure cleaner to remove dirt from the hy-
draulic compactor.
