Depressurising the hydraulic
system
Even when you have switched off the carrier, a
considerable residual pressure can still be present
in the hydraulic 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 depressurised
using the hydraulic system of the carrier, by allowing
hydraulic oil to drain to the tank via the return
connection.
Depending on the type of hydraulic attachment, the
internal 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
attachment and in the carrier has a temperature
of at least 0 °C. If necessary, pre-heat it to at
least 0 °C.
2. The hydraulic attachment must be connected to
the hydraulic system of the carrier device, i.e.
the hydraulic hoses must be connected up and
the respective shut-off valves in the supply pipe
and in the connection to the tank must be
opened.
3. Open the cutter jaws completely.
4. Place the hydraulic attachment horizontal on the
ground.
5. Close the cutter jaws briefly, just enough to see
a movement of the cutter jaws.
6. Depressurise the hydraulic system according to
the manufacturer's safety and operating
instructions for the carrier.
7. You must wait at least another 30 minutes until
the pressure has been relieved through leakages.
8. Measure the pressure with a suitable gage at
both measurement connections at the hydraulic
attachment.
9. If residual pressure is still present, wait until the
pressure has been completely relieved.
10. 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 couplings, so that no hydraulic oil
can flow back from the carrier.
Cleaning
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.
►
Collect the water used for cleaning if it has been
contaminated by hydraulic oil and cutter grease.
►
Dispose of the water in accordance with the
applicable regulations to avoid environmental
hazards.
Preparations
Hydraulic demolition cutter attached:
♦
Place the hydraulic demolition cutter on the
opened cutter jaws.
All parts are thus accessible for cleaning.
♦
Secure the carrier such that it cannot move
unexpectedly.
Hydraulic demolition cutter not attached:
♦
Plug up all hydraulic ports.
Procedure
♦
Use a pressure cleaner to remove dirt from the
hydraulic demolition cutter.
Lubrication
Lubricate bolts
Lubrication interval: prior to every shift.
♦
Close the hydraulic demolition cutter.
♦
Place the hydraulic demolition cutter vertically on
the closed cutter jaws.
♦
Secure the carrier so that it cannot move
unexpectedly.
♦
Only use cutter grease for lubrication.
♦
Place the grease gun on the lubrication nipples of
the cylinder eyes (A).
45
© 2015 Construction Tools GmbH | No. 3390 5141 01 | 2015-11-16
Original instructions
MAINTENANCE
CC 1700 U, 1700 S
