Operation
WARNING Components bursting
Components of the swivel joint may burst. Metal
parts may become projectiles and cause serious
injuries and damage property.
►
Never operate the hydraulic breaker without
attached swivel joint covers.
WARNING Hot hydraulic oil squirting out
The hydraulic system is under high pressure. If
hydraulic connections come loose, hydraulic oil will
squirt out under high pressure. Hydraulic oil
squirting out can lead to serious injury.
►
Immediately switch off the hydraulic attachment
and the carrier if you detect any leaks in the
hydraulic circuits.
►
Depressurise the hydraulic system (see chapter
Depressurising the hydraulic system).
►
Repair any leaks before operating the hydraulic
attachment again.
WARNING Hot parts
The percussion unit, the working tool, hoses, pipes
and fittings become very hot during operation.
Touching them may lead to burns.
►
Never touch hot parts.
►
If you have to carry out activities where you
have to touch the parts, wait for them to cool
down first.
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.
►
Collect any hydraulic oil which escapes.
►
Dispose of it in accordance with the applicable
environmental regulations.
NOTICE Hydraulic oil too hot
The temperature of the hydraulic oil must not
exceed 80 °C. Higher temperatures will damage
the seals of the hydraulic breaker and the
diaphragm of the HP-accumulator.
►
The temperature of the hydraulic oil must be
monitored.
►
Shut off the carrier and the hydraulic breaker if
you measure an increased temperature in the
tank.
►
Check the hydraulic installation and the
pressure relief valve.
NOTICE Damage due to idling strokes
If the percussion piston carries out a hammer
action without hitting the working tool, it is carrying
out an idling stroke. If this happens it will lead to
hydraulic peak pressures which may damage the
seals of the hydraulic breaker and the carrier.
►
Do not allow the percussion piston to carry out
idling strokes for a prolonged period of time.
Initial operation and
operation after long storage
Prior to first use and after more than eight weeks
storage of the hydraulic breaker, the pressure in
the piston accumulator must be checked.
◆
Remove the protective cap from the aperture
for the working tool.
◆
Remove the retainer bars.
◆
Check the pressure in the piston accumulator
without exerting pressure (see chapter Piston
accumulator).
◆
Fill up the piston accumulator or release the
pressure from the piston accumulator until the
piston accumulator has reached the minimum
gas pressure (see chapter Piston accumulator).
Use the tabular value at ambient temperature,
not at operating temperature in this case.
◆
Install the hydraulic breaker (see chapter
INSTALLATION).
◆
Operate the hydraulic breaker until the
operating temperature 60 – 70 °C has been
reached.
◆
Follow all instructions as described in the
chapter OPERATION.
◆
Check the pressure in the piston accumulator
without exerting pressure of the working tool
(see chapter Piston accumulator).
◆
Fill up the piston accumulator to the required
gas pressure (see chapter Piston accumulator).
Safety and operating instructions HB 2000, 2000 DP, 2500, 2500 DP
32 © Construction Tools GmbH | 3390 5090 01 | 2016-05-23
Original instructions
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