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Safety and operating instructions
© Anbaufräsen PC GmbH | 3390 5221 01 | 2020-09-07
Original Instructions
47
7.3 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.
7.4 Cleaning
Clean the drum cutter daily after use.
NOTICE
Environmental damage due to hydraulic oil
Hydraulic oil is environmentally harmful and must not
penetrate the ground or enter the water table or water
supplies.
u
Collect any hydraulic oil which escapes.
u
Dispose of it in accordance with the applicable envi-
ronmental regulations.
NOTICE
Damage due to improper cleaning
u
Never strike the round attack picks, cutter drums or
the gear with a hard object, e.g. a hammer, in order
to free them of a trapped fragment or contaminant.
Note: When cleaning with a high pressure cleaner, be
aware of the safety labels. These must not be damaged
by a water jet.
n
Wipe clean areas to which safety labels are attached
by using a cloth.
n
Clean all other areas of the drum cutter thoroughly
with water.
n
Remove contaminations in the intermediate spaces
between the round attack picks and pick boxes.
n
Ensure that no residual contaminants are located be-
neath the pick (e.g. fresh concrete or fine material).
Such residue could harden and set the picks fast in
the boxes.
Summary of Contents for ER 100 L
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